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My 2.5 to 2.8 swap by Mr.Goodwrench
Started on: 11-04-2012 07:40 PM
Replies: 50 (969 views)
Last post by: Mr.Goodwrench on 05-17-2013 09:11 PM
Mr.Goodwrench
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11-04-2012 07:40 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

I got my 85 fiero in 2000
I love that little thing, but with over 200k that duke was nothing but problems. Time for a new engine so I got a v6 from a fiero bud who upgraded to a v8.
at 287,000 miles, out with the old


then clean up and reseal the v6. I was told it had about 75k miles on it.
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[This message has been edited by Mr.Goodwrench (edited 11-04-2012).]

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Stubby79
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11-05-2012 05:01 AM Click Here to See the Profile for Stubby79Send a Private Message to Stubby79Edit/Delete MessageReply w/QuoteDirect Link to This Post

Looks very clean. Nice work. That a new head on the side closest to us? the other side looks more like what I'm used to seeing!

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Mr.Goodwrench
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11-18-2012 11:37 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Yeah, the one head is a rebuilt one

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Mr.Goodwrench
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11-18-2012 11:38 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Still gotta buy a clutch, hoses and such. Should go in pretty easy.

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Mr.Goodwrench
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02-03-2013 04:20 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

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zkhennings
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02-03-2013 05:21 PM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

Nice I did the same swap exactly down to the 85 fiero, pretty much straight forward, just ran into lots of little problems. Don't forget to add a second fuse for the inj2 slot on the fuse box. Also, when swapping fuel pumps, you need a special fuel hose to mate the pump to the sender. The stock one cannot handle the pressure as I quickly learned when putting mine in. And it was replaced with regular fuel hose, which I had to replace AGAIN because you need a special SUBMERSIBLE fuel line. NAPA sells it, but it needs to be a high pressure submersible hose. Exhaust wise I had just hooked up the four cyl exhaust to the down pipe. It worked but probably was not ideal performance wise. I had an issue with the four cyl exhaust hitting the motor mount I used, but I did not use the stock motor mount. Also I have done plenty of burnouts on dry pavement with the isuzu and it is holding up just fine. As far as the clutch goes I am using a four cylinder spec stage 2 clutch on the v6 flywheel and it works just fine, doesn't slip at all. Good luck! the v6 is a big improvement over the duke and sounds great, especially second gear at 3000 rpms, floored at that point up to redline it just howls.

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82-T/A [At Work]
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02-03-2013 06:13 PM Click Here to See the Profile for 82-T/A [At Work]Send a Private Message to 82-T/A [At Work]Edit/Delete MessageReply w/QuoteDirect Link to This Post

Very very very nice... but FYI... you'll want to remove the metal shaft comming off of the waterpump. You don't need that as the Fiero's V6 doesn't make use of it. The old waterpump that you took off should have a plug already on there, so just take the plug off the old waterpump, remove the tube off the new waterpump, and replace it with the plug.

If you accidentally traded in the old waterpump with the plug attached, then you should be able to get a new one from the Fiero Store or a junkyard.

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zkhennings
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02-03-2013 06:54 PM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

No our fieros need that tube to go to the heater line, it is different for the newer fieros where that line goes right into on of the main coolant lines. Our fieros have a heater line on the firewall side and on the trunk side. My fiero uses it and since we both have 85s that were four cylinders, I assume you will need it too. I have that tube on my engine going to the solid heater line located under the dogbone mount on the trunk side. My heat works great.

[This message has been edited by zkhennings (edited 02-03-2013).]

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Fiero84Freak
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02-04-2013 08:28 AM Click Here to See the Profile for Fiero84FreakClick Here to Email Fiero84FreakSend a Private Message to Fiero84FreakEdit/Delete MessageReply w/QuoteDirect Link to This Post

No Fiero six cylinders do use the metal tube. It was used on 1985 to I believe 1987 Fieros and then was revised in 1988 with a plug setup.

Now with him doing a four to six swap, I cannot recall exactly if the four cylinder cars utilized the heater tubes going into the water pump. Been forever and a day since I've worked on a duke.

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zkhennings
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02-04-2013 10:07 AM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

Yes at least an 85 four cylinder fiero does because I have one I swapped a v6 into

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02-04-2013 04:50 PM Click Here to See the Profile for josef644Click Here to Email josef644Send a Private Message to josef644Edit/Delete MessageReply w/QuoteDirect Link to This Post

87 and 88 used a different set up for the return heater pipe merging with the coolant return, passenger side in front of the rear tire area. I added a V6 to my 88 that was a 2.5 factory car. I had to locate a V6 heater feed pipe that replaces the 4 cyl one. It was made behind the engine ending up at or around the trunk firewall. sort of 'U' shaped.

If you do this, do it BEFORE you put the V6 back in the car.

[This message has been edited by josef644 (edited 02-04-2013).]

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Mr.Goodwrench
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02-24-2013 03:58 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Damn. I already switched the fuel pump, guess I'm going to have to drop the tank again. Thanks for the info though

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Mr.Goodwrench
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02-24-2013 04:07 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

I got a v6 clutch and a new through out bearing from a 4 bangerThis images is larger than 153600 bytes. Click to view.

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Mr.Goodwrench
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02-24-2013 04:13 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Almost ready to slide it inThis images is larger than 153600 bytes. Click to view.

[This message has been edited by Mr.Goodwrench (edited 02-24-2013).]

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Mr.Goodwrench
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03-02-2013 08:04 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Gonna replace the old nasty insulationThis images is larger than 153600 bytes. Click to view. This images is larger than 153600 bytes. Click to view. This images is larger than 153600 bytes. Click to view.

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Mr.Goodwrench
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03-02-2013 08:06 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

And bit of rust to deal with, nothing majorThis images is larger than 153600 bytes. Click to view. This images is larger than 153600 bytes. Click to view. This images is larger than 153600 bytes. Click to view.

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Mr.Goodwrench
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03-19-2013 02:11 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

It's slow here at work, makes me wish I could go home and spend some time on my Fiero. I cleaned up the firewalll and got Pauls template from fierosails.com to make new insulation.

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Mr.Goodwrench
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03-19-2013 02:13 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

I think ill try to resize these pics when i get home, too big

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03-19-2013 02:49 PM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

Nice work! What material did you use for the insulation? I am looking for some at the moment

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Mr.Goodwrench
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03-19-2013 03:15 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

I got the "reflectix" at Lows that Paul mentions in his instructions. He says other people have had good results with it

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Tony Kania
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03-19-2013 08:58 PM Click Here to See the Profile for Tony KaniaSend a Private Message to Tony KaniaEdit/Delete MessageReply w/QuoteDirect Link to This Post

That insulation looks killer!

You are so going to have to go on a run or two with us this year.

I was just up in Deer Park two Saturdays ago. I often drive north when I take the GT out. I should have thought about you, and checked out your build. I remember the car when you were at Joe's.

Good luck...

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Mr.Goodwrench
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03-19-2013 11:25 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by Tony Kania:

That insulation looks killer!

You are so going to have to go on a run or two with us this year.

I was just up in Deer Park two Saturdays ago. I often drive north when I take the GT out. I should have thought about you, and checked out your build. I remember the car when you were at Joe's.

Good luck...


That'd be fun!

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Mr.Goodwrench
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03-20-2013 09:19 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Heat shield installed

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Mr.Goodwrench
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03-24-2013 09:24 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

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Getting closer

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Tony Kania
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03-24-2013 09:47 PM Click Here to See the Profile for Tony KaniaSend a Private Message to Tony KaniaEdit/Delete MessageReply w/QuoteDirect Link to This Post

Nice! Seeing how close you are to being done has to be a relief.

Good seeing you again today. That is going to be a fun car.

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Mr.Goodwrench
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03-24-2013 10:49 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Yeah Tony. Thanks for coming out. I had a challenge lining up the cradle bolt holes. I had the assembly sitting on a pallet that I bolted casters to so I could roll it around. Well as I pushed it under the car some casters broke off. Took all the strength I had to push it in the rest of the way. Lol

[This message has been edited by Mr.Goodwrench (edited 03-24-2013).]

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Mr.Goodwrench
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03-24-2013 10:56 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

And wouldn't yoga know. As I'm putting tools away I see the o-ring seal for my fuel pump/ sender on my work bench. Dammit, gotta drop the tank again!

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03-25-2013 01:50 AM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

While you have the tank out, you installed submersible fuel hose in between pump and sender right? And also I am interested in seeing what you did with your fuel lines and fuel filter!

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Mr.Goodwrench
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03-25-2013 09:52 AM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by zkhennings:

While you have the tank out, you installed submersible fuel hose in between pump and sender right? And also I am interested in seeing what you did with your fuel lines and fuel filter!


I did that after reading that suggestion. glad I did, the prvious hose was very soft, I'm sure it would have blown up

[This message has been edited by Mr.Goodwrench (edited 03-25-2013).]

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Mr.Goodwrench
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04-02-2013 12:01 AM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Got the fuel tank seal back in. Just need to hook up coolant and heater hoses. But it does look like the oil pan is leaking at the front. Dammit. I put a new gasket in while the engine was out maybe ill just use sylicone

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04-09-2013 12:37 AM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Almost ready for test fire

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04-09-2013 03:38 PM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

Looking good!
Does your decklid close? It appears from the picture as though the intake would get in the way of the torque rod thinger? It was a problem for me when I tried something similar. I hope not!

Edit to say I did not see the gas strut, did you remove the torque rod? I need to do that it gets in the way of everything. Do you remember where you got your gas strut?

[This message has been edited by zkhennings (edited 04-09-2013).]

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Mr.Goodwrench
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04-09-2013 04:53 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by zkhennings:

Looking good!
Does your decklid close? It appears from the picture as though the intake would get in the way of the torque rod thinger? It was a problem for me when I tried something similar. I hope not!

Edit to say I did not see the gas strut, did you remove the torque rod? I need to do that it gets in the way of everything. Do you remember where you got your gas strut?



I think it will close. havent tried yet. LOL.

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Mr.Goodwrench
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04-09-2013 05:28 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

I tried putting the stock air cleaner on, but the shift cables were in the way.

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04-09-2013 10:46 PM Click Here to See the Profile for zkhenningsSend a Private Message to zkhenningsEdit/Delete MessageReply w/QuoteDirect Link to This Post

Oh yes I am well aware of that, I cut all mounting tabs/ brackets off the stock air cleaner and made new ones so it sits way lower and it is out of the way now.

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Mr.Goodwrench
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04-09-2013 11:07 PM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Ok, the deck lid doesn't close all the way. Not because of Rodney Dickmans strut, but the stock springboard is in the way. Should close fine once I remove that

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04-12-2013 12:33 AM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

Well. Hooked up battery and fuel pump kicked on, wont stop, even if I pull the relay. Maybe bad oil pressure sender? Tank is empty though. Engine won't turn over either, saw smoke near battery. Looks like someone did a half ass job splicing fusible link from battery junction block, exposed wires, all corroded. Just little bugs to work out

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04-12-2013 11:14 AM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post

Make sure your negative battery cable is good and properly connected to the ENGINE!!

If it isn't the starter gets ground through the small cable between the battery and the body, and then the body to engine ground straps, and 2 wires in the engine harness that are way too small and they will burn the insulation off of them quickly. You will also see smoke in the battery area.

Also when this happens the starter won't crank, or just cranks slow.

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Mr.Goodwrench
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04-12-2013 11:50 AM Click Here to See the Profile for Mr.GoodwrenchClick Here to visit Mr.Goodwrench's HomePageClick Here to Email Mr.GoodwrenchSend a Private Message to Mr.GoodwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by phonedawgz:

Make sure your negative battery cable is good and properly connected to the ENGINE!!

If it isn't the starter gets ground through the small cable between the battery and the body, and then the body to engine ground straps, and 2 wires in the engine harness that are way too small and they will burn the insulation off of them quickly. You will also see smoke in the battery area.

Also when this happens the starter won't crank, or just cranks slow.


I'll bet thats it. gonna bring my mutltimeter home from work and make sure I'm getting a good ground. I need to get a ground strap from the engine to chassis too.

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04-12-2013 01:30 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post

When you go to measure it, don't measure resistance. The required resistance is too low to be accurately read by a multi-meter.

Rather than that measure the voltage at the starter during cranking. Measure it from the bolt, not the nut, and not the wire terminal that the positive battery terminal is on. Ground the multimeter against the starter body itself, on the aluminum nose. You should see battery voltage (during cranking) within 1 - 1.5v. Any larger drop indicates a problem with the wiring.

Since trying to crank it with a bad negative battery cable to block connection can burn up your wiring, inspect that first, and make sure it is making a good connection.

If the drop at the starter is too large, start by seeing how much drop is on each of the battery cables. Move the negative wire from the starter nose to directly on the bolt that connects the battery cable to the battery. See if the drop still exists. If it does then try with the positive meter lead. Move the negative lead back to the starter nose. Put the positive lead directly on the positive battery cable bolt.

Once you have determined which battery cable has the drop in voltage, then start playing higher/lower and see where the problem is. If negative, do you measure the drop at the neg cable where it bolts to the engine? Do you measure the drop on the cable where it is connecting to the battery? Yes perhaps the problem is just between the cable terminal and the battery terminal.

All these checks need to be done while someone is attempting to crank the engine. Voltage checks with no load (not attempting to crank the engine) on the system are meaningless. They almost always show the full voltage.

-------

Fuel pump always running.

Disconnect the connector from the oil pressure sender/fuel pump switch. If the pump stops then there is your problem. Note also - Your oil pressure sender/switch is set at something like 3psi. After cranking a engine with cold oil, it might take up to 2 min for the oil pressure to drop down below that amount. The fuel pump will run that entire time. That is normal. Once the engine starts running however and the oil is warm, it will just take seconds to shut off, like you are used to.

[This message has been edited by phonedawgz (edited 04-12-2013).]

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