Look's like you are really close to needing new back tire's...

Smooth!!

we modded the can so the bottom intake is way bigger because we put a huge pipe into it The hole is all most a inch bigger

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Looking good! Congrats!

Wow! Thats a clean looking install! What did you use for the intake pipe, looks good.

I'm starting to get 4.9 fever again. It looks your basically done, what else do you need before you fire it up?

I need to do alot of work to my 85 before I put my motor into it since I'm selling the 87.

Good work man, looks like you'll be burning up Idaho in no time!A

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87GT Auto 4.9 in progress!
86SE 5 speed
85GT 4 speed
https://www.fiero.nl/forum/Forum1/HTML/027839.html

WEll IT IS RUNNING i am sooooooo happy but we still got some bugs to work out and i need some help with them.

1. my oil pressure guage is pinned

2 after letting off the gas it stays at 3000 rpm for 20 to 30 sec then comes down to 875 ??

3. my altinator is making a funning buzzing sound

Thanks for all the help guys and comments because it really pays off.

J Sokol

now i need a new sig can some one help my out

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quote Originally posted by Fieroking: WEll IT IS RUNNING i am sooooooo happy but we still got some bugs to work out and i need some help with them. 1. my oil pressure guage is pinned 2 after letting off the gas it stays at 3000 rpm for 20 to 30 sec then comes down to 875 ?? 3. my altinator is making a funning buzzing sound Thanks for all the help guys and comments because it really pays off. J Sokol now i need a new sig can some one help my out

Did you use a 88 fiero v6 oil pressure sender? One thing you will notice is that the 4.9 has VERY low oil pressure at idle. It will kick the warning light on in the 85-87 Aux guages. 88 has a lower psi value b4 kicking the light on per Ed Parks. I just took the bulb out of mine and Jesse's.

Also did you lube your alt? I know this sounds silly but if you are like me and clean everything its gonna get "dry". My alt seemed a bit hard to turn so I lubed it up good w/ some WD40 and it spins as easy as it should. BTW, youre intake tube... is exactly like I was talking to the exhaust shop to do mine! Like minds.....
I didnt notice but did you have a hard pipe made to go from the pass coolant tube up to the t-stat housing like I did?

Steven

i cant wait to hear how it performs!!!

quote Originally posted by crzyone: Worse gas mileage? My 4.9 has a 350cfm carb. The intake holes on a 4.9 are 500cfm. It would be almost impossible to get worse gas mileage with my small carb. Intake ports were also designed to flow just air, I will be sending a air/fuel mixture down the same hole. I'd expect to get pretty close gas mileage to a PFI.

a smaller cabr than it needs most likely wont improve gas miledge, it will merly restrict the intake and cause a loss of power. I suggest putting a 500-525 cfm carb on it as it needs and adjusting the carb accordingly, maybe even take it to a professional tuner who can set it for maximum power with minimum fuel

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--Adam--
1987 Blue GT 5-speed
IM AOL: FieroGT5speed

ok but how can i use the oil pressure sender do i take it out of the tube then put it is and i think the i know what is up with my idle issue the sensor is pushing it out

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We used the fiero oil pressure sensor at the oil filter housing on the 4.9. The caddy idle stepper mtr is used to idle and increase idle of the caddy mtr.

Ok pbj but i have a problem when i rev it up to about 4k rmp and let out the gas the motor stays at 2500 for at lease 20 sec then comes back down ?? i dont under stand why it is doing it or could it be the cruse control. but the wires are not hooked up right now but the cable is.

i have a 88 oil pressure sensor can i use it and what are the colors for the wiring because the plugs are different

Thanks

J Sokol

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The cruise control does need to be wired in for the caddy ecm (I remember reading about that) Also the caddy ecm at times loves to keep the rpm up causing a "pushing" sensation when you let off the gas at times (Rockcrawl had a concern with this early on in his 4.5 days). This you would not notice so much with a big caddy. Do you have Park/neutral signal and such to wire in for the caddy computer. BUT First once you getting running you need to work the the SES light and get it under control, repairing circuits that turns on the SES light. I am not much help because I did not use the caddy ecm, I used the 730 ecm (F body). Sorry.

As for the oil pressure, I used the stock fiero sensor and fiero wires to dash, the only thing different in that circuit is that its screwed into a 4.9 engine.

Pete

ok i have been driving it for a day or 2 and even after i changed the tps it still dose it evey time i let of the gas and coast so what is up i will ask my dad about the park netural thing ok but were dose it wire to or how do i wire it. thanks pete for the help

J Sokol

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hey fieroking, did you or your dad happen to keep a record of how you did the wiring? i was just wondering because there are a couple of spots that im still trying to figure out before i start my swap.
I hope you get yours running right!

well i have been driving it for 2 days now and i love it but i still have the hi idle issue to deal with. i have 1 question what color gear is int the 88 5spd getrag vss because i think i might have put on the wrong one. and could some one make me a new sig please

J Sokol

proud owner of a 4.9 pfi fiero

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I may have missed this but what side scoops are you using?

Ira

All I can say is wow and I wish i knew how to paint =). I'm currently helping wipe0ut with his 4.9 swap but we are both pretty lazy. I'll start up a thread in a min just for fun.
Great job, can I watch =).

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-Kyle
Email: arte@sek-c.com
Aim: Littlechugger
1984 Notchback(PARTS - WANT SOME?)
1987 Notchback 4cyl.
1992 Corsica 3.1L

I'll post this again for anybody who has a 4.9 with a sail-on or stalling problem. Resolve any error codes before doing this.

The first thing you should do is set the base idle speed and ISC plunger length. Set the TPS as part of that process as well. Make sure the throttle plates and bores are clean before you start. Also make sure you don't have any vacuum leaks. Jumper ALDL A and B to enter the set timing mode. Verify timing at 10* BTDC and remove jumper. Disable the alternator by grounding the small brown wire, there should be a green connector inline if it's anything like a Cadillac harness. Disconnect the ISC motor where the main harness attaches to the sub harness. Attach two jumper wires to the blue wires of the sub harness. Connect one jumper to ground and the other to bat positive momentarily until the ISC is fully retracted. If it extends, reverse the polarity to make it retract. When it is fully retracted, the throttle lever should be resting on the minimum idle screw. If the throttle lever is touching the ISC plunger at full retraction, use a pliers to turn the plunger in until it's not touching. Use the minimum idle screw (recessed torx) to set the idle to 525 rpm. With the throttle lever resting on the minimum idle screw, set the TPS to .50 volts. Now you can extend the ISC by reversing the polarity of the jumpers. At full ISC extension, the TPS should read between 1.15 and 1.20 volts. Adjust the ISC plunger in or out with a pliers to obtain the correct TPS voltage. Retract the ISC. Reconnect the ISC to the main harness. Turn the key off and wait 20 seconds to allow the ECM to perform a TPS learn. Cycle the ignition on and off once more. It takes two cycles for a sucessful TPS learn. Perform and idle learn. Run engine until coolant temp is greater than 176*. Allow engine to idle in park for ten minutes. With brake applied, allow engine to idle in drive for at least three minutes. This should eliminate any coast down sail-on or stalling.

WOOOOOOOOOOhoOOOOOOOO

it runs like a top no problems thanks Rockcrawl if u lived here i would give u a big hug thanks for evey one for helping me or just watching and the side scoops i think they are irm not sure i will ask around but i like them.

J Sokol

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quote Originally posted by rockcrawl: I'll post this again for anybody who has a 4.9 with a sail-on or stalling problem. Resolve any error codes before doing this. The first thing you should do is set the base idle speed and ISC plunger length. Set the TPS as part of that process as well. Make sure the throttle plates and bores are clean before you start. Also make sure you don't have any vacuum leaks. Jumper ALDL A and B to enter the set timing mode. Verify timing at 10* BTDC and remove jumper. Disable the alternator by grounding the small brown wire, there should be a green connector inline if it's anything like a Cadillac harness. Disconnect the ISC motor where the main harness attaches to the sub harness. Attach two jumper wires to the blue wires of the sub harness. Connect one jumper to ground and the other to bat positive momentarily until the ISC is fully retracted. If it extends, reverse the polarity to make it retract. When it is fully retracted, the throttle lever should be resting on the minimum idle screw. If the throttle lever is touching the ISC plunger at full retraction, use a pliers to turn the plunger in until it's not touching. Use the minimum idle screw (recessed torx) to set the idle to 525 rpm. With the throttle lever resting on the minimum idle screw, set the TPS to .50 volts. Now you can extend the ISC by reversing the polarity of the jumpers. At full ISC extension, the TPS should read between 1.15 and 1.20 volts. Adjust the ISC plunger in or out with a pliers to obtain the correct TPS voltage. Retract the ISC. Reconnect the ISC to the main harness. Turn the key off and wait 20 seconds to allow the ECM to perform a TPS learn. Cycle the ignition on and off once more. It takes two cycles for a sucessful TPS learn. Perform and idle learn. Run engine until coolant temp is greater than 176*. Allow engine to idle in park for ten minutes. With brake applied, allow engine to idle in drive for at least three minutes. This should eliminate any coast down sail-on or stalling.

Damn Rockcrawl...

A guy asks for help and you start running on and on and on... geez I better find that bad rating button... oops missed and gave you a 4.9L god rating :-)

Nice job helping out!!!

Hey Rockcrawl, how does it run? Tell us more!! Does it feel like the new engine has changed the handling??