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A lot of new parts and my 2.8L still won't run right. Backfire then stalled by theiss2200
Started on: 08-18-2013 10:46 AM
Replies: 12 (229 views)
Last post by: Gall757 on 08-19-2013 08:40 AM
theiss2200
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Report this Post08-18-2013 10:46 AM Click Here to See the Profile for theiss2200Click Here to visit theiss2200's HomePageClick Here to Email theiss2200Send a Private Message to theiss2200Edit/Delete MessageReply w/QuoteDirect Link to This Post
I was driving my 86 SE with the 2.8L and it backfired and it stalled. I pulled over it started right back up no problem. I turned arounda nd on my way home it did it again and died and now it won't start at all... Anyone have any sugestions?

Here is what I put in new:
Plugs
Wires
Dizzy cap and rotor
Ignition control module
Coil
Starter
fuel pump
Alternator.

I tested the fuel pressure and it is coming back fine. I need to get this running. Let me know if there is anything I should be looking for or if someone else had this problem. Like I said It isn't even starting, I tried right when I got home yesterday and then I let it sit overnight and it was cooled down and still nothing.
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theiss2200
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Report this Post08-18-2013 10:55 AM Click Here to See the Profile for theiss2200Click Here to visit theiss2200's HomePageClick Here to Email theiss2200Send a Private Message to theiss2200Edit/Delete MessageReply w/QuoteDirect Link to This Post
Also I isn't showing any codes.
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James Bond 007
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Report this Post08-18-2013 11:03 AM Click Here to See the Profile for James Bond 007Send a Private Message to James Bond 007Edit/Delete MessageReply w/QuoteDirect Link to This Post
I asume its back fireing because its running rich. Check your timeing. Try looking at your motor at night and look for any stray sparks.
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theiss2200
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Report this Post08-18-2013 11:10 AM Click Here to See the Profile for theiss2200Click Here to visit theiss2200's HomePageClick Here to Email theiss2200Send a Private Message to theiss2200Edit/Delete MessageReply w/QuoteDirect Link to This Post
It won't run at all now. I did look for stray sparks and nothing, the other night, while it ran.
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Blacktree
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Report this Post08-18-2013 11:12 AM Click Here to See the Profile for BlacktreeClick Here to visit Blacktree's HomePageClick Here to Email BlacktreeSend a Private Message to BlacktreeEdit/Delete MessageReply w/QuoteDirect Link to This Post
Backfiring once and then stalling is a classic symptom of ICM failure.

Do you have a spare ignition control module? If so, swap it in, and see what happens.

Just FYI, the ICM is a common failure point of the 2.8 V6. It would be wise to keep a spare (with tools to replace it) in the trunk, just in case. Because when it comes to ICM failure, the question isn't if it will fail, but when.

Also, make sure the mating surface on the distributer is smooth and clean. And use heatsink paste on the bottom of the ICM. And finally, make sure to tighten both ICM screws evenly, so the ICM doesn't get tilted to one side.

Best of luck!

[This message has been edited by Blacktree (edited 08-18-2013).]

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theiss2200
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Report this Post08-18-2013 11:13 AM Click Here to See the Profile for theiss2200Click Here to visit theiss2200's HomePageClick Here to Email theiss2200Send a Private Message to theiss2200Edit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks for the advice, I will go pick up another one today and try it. I hope it works. I will let everyone know.
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Blacktree
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Report this Post08-18-2013 11:19 AM Click Here to See the Profile for BlacktreeClick Here to visit Blacktree's HomePageClick Here to Email BlacktreeSend a Private Message to BlacktreeEdit/Delete MessageReply w/QuoteDirect Link to This Post
While it's a good idea to have a spare ICM, you might want to diagnose your problem a little further. For example, when you try to start the engine, does the tachometer do anything at all? If the ICM is working, the tach should twitch a little bit during cranking. There should also be spark at the plugs.
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theiss2200
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Report this Post08-18-2013 11:28 AM Click Here to See the Profile for theiss2200Click Here to visit theiss2200's HomePageClick Here to Email theiss2200Send a Private Message to theiss2200Edit/Delete MessageReply w/QuoteDirect Link to This Post
When I am trying to start it the tach pins at 0 it has done that since I bought the car around 3 years ago. So it should move a little while I am trying to start it?
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Gall757
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Report this Post08-18-2013 11:32 AM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Yes....it should.

Too many ICMs fail right out of the box, but you could also have a bad pickup coil or cracked magnet in the distributor, or bad wires and connectors. IF all those things are working correctly, the Tach needle should go up to 200-400 while you are cranking the starter.

[This message has been edited by Gall757 (edited 08-18-2013).]

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Bruce
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Report this Post08-18-2013 12:36 PM Click Here to See the Profile for BruceClick Here to Email BruceSend a Private Message to BruceEdit/Delete MessageReply w/QuoteDirect Link to This Post
Also, check your vacuum lines.
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phonedawgz
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Report this Post08-18-2013 05:57 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
Does your ICM pick up coil look like it is falling apart? If so replace it.

//www.fiero.nl/forum/A...14-2-114261.html#p13

Test your ICM at a parts store.

Test for spark.
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theiss2200
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Report this Post08-18-2013 07:25 PM Click Here to See the Profile for theiss2200Click Here to visit theiss2200's HomePageClick Here to Email theiss2200Send a Private Message to theiss2200Edit/Delete MessageReply w/QuoteDirect Link to This Post
I changed the ICM and Pick up coil. It runs now, thank you, but when I put it into drive it stalled. but then it started right back up and it almost stalled again when I put it in drive but it didn't stall completely it kept running but has a hesitation.
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Gall757
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Report this Post08-19-2013 08:40 AM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
That may go away after a little driving.... if not, post the symptoms here and we will figure it out.
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