C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

why me?

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Old May 25, 2007 | 02:00 PM
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Its 90 degrees outside, ready to meet some friends for lunch, when I stop somewhere first. Come back, and while backing up,my Vette stalls. No biggie, but then it won't start. It will turn over, but thats it. Starts about 10 minutes later, enough for me to pull back into a parking spot. Then it won't start again. Just got it home, thanks AAA, got it started enough to back it away from the truck. But 1 minute later, when I wanted to start it again to back it into its parking spot in my driveway, no way.
Whats wrong with this car now?
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Old May 25, 2007 | 02:56 PM
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My first guess would be an ignition module...

DaveZ
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Old May 25, 2007 | 03:08 PM
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Originally Posted by z28cp
My first guess would be an ignition module...

DaveZ

that would be my starting point also. Autozone test the ICM for free after you remove it. Next would be to check the fuel pressure with a gauge.
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Old May 25, 2007 | 03:14 PM
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Old May 25, 2007 | 03:17 PM
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It also felt like it wanted to stall when I was driving it today. In fact it did stall while my foot was on the clutch ready to shift to second gear.
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Old May 25, 2007 | 06:41 PM
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Originally Posted by z28cp
My first guess would be an ignition module...

DaveZ
If I had to guess....

I would check for spark when it's in this condition to point you in the right direction.
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Old May 25, 2007 | 07:07 PM
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Originally Posted by frannyzvette
It also felt like it wanted to stall when I was driving it today. In fact it did stall while my foot was on the clutch ready to shift to second gear.
I agree with others regarding ICM, but with this new info, I would also check the fuel pressure. Another consideration would be a clogged/restricted fuel filter.

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Old May 25, 2007 | 08:42 PM
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Check to see if there are any codes set. While trying to start it, determine what is missing, air, spark, fuel, or compression. It will either be spark or fuel. I'm guessing fuel. Not to over state the obvious, but is there gas in it?

RACE ON!!!
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Old May 25, 2007 | 09:36 PM
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Originally Posted by CFI-EFI
Check to see if there are any codes set. While trying to start it, determine what is missing, air, spark, fuel, or compression. It will either be spark or fuel. I'm guessing fuel. Not to over state the obvious, but is there gas in it?

RACE ON!!!
Oh come on!!
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Old May 25, 2007 | 09:38 PM
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In the AM will check the ignition module. But I have to get this car to run for awhile cause this problem doesn't happen till it gets hotter. This car never liked the NJ heat.
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Old May 25, 2007 | 09:42 PM
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Franny - I have a spare module, I'm about 1/2hr from you
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Old May 25, 2007 | 09:42 PM
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Strange...I had the same problem. Not quite as bad, but some major missing and shuddering when she got hot...>200 deg.

I had a spare coil on the shelf and just for grins I replaced it tonight...solved that problem!

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Old May 26, 2007 | 11:56 AM
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Originally Posted by _twisted_
Franny - I have a spare module, I'm about 1/2hr from you
Thanks, I'll let you know. Something tells me that Vette is not getting looked at till later,,,,,but this heat would help it out!
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Old May 26, 2007 | 12:07 PM
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Old May 26, 2007 | 12:31 PM
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Get a fuel pressure gauge on the injector rail, when your fuel pump is on its way out it can do that. Will quit, start a while later then die again...
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Old May 26, 2007 | 04:12 PM
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Originally Posted by MikeC4
I agree with others regarding ICM, but with this new info, I would also check the fuel pressure. Another consideration would be a clogged/restricted fuel filter.

That's because it's easier to agree
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Old May 26, 2007 | 05:26 PM
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my 2 cents, sounds like the fuel pump isnt getting the engine is "running" signal, and the fuel pump shuts off after 3 seconds or so.
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Old May 26, 2007 | 05:54 PM
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There is no, "engine is "running" signal" to the fuel pump. The fuel pump is powered to run when it is supposed to by the ECM. In the case of a fuel pump relay failure, the oil pressure switch will power the fuel pump.



Originally Posted by frannyzvette
Oh come on!!
It wouldn't be the first time. It wasn't the main point of my post. I did say, "Not to over state the obvious,". I have heard of "no start" service calls being made, when the problem was nothing more than the auto trans not being in neutral or park.

RACE ON!!!
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Old Jun 8, 2007 | 06:36 PM
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Hey everyone, got a simple question. Where is this ICM located?
(I know _twisted_ you had an extra) but they are pretty cheap at Auto Zone and my husband told me to just grab one, but, we can't seem to find where its located, or, are we looking in all the wrong places.
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Old Jun 8, 2007 | 06:50 PM
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Originally Posted by frannyzvette
Hey everyone, got a simple question. Where is this ICM located?
(I know _twisted_ you had an extra) but they are pretty cheap at Auto Zone and my husband told me to just grab one, but, we can't seem to find where its located, or, are we looking in all the wrong places.
It is in the disributor, under the rotor.
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