L98 dies
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Joined: Mar 2010
Posts: 50
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From: West Columbia SC
L98 dies
Its me again.... I have a 86 that when you take off from park that will die out on you if you dont give it enough gas, what could be causing this? The guy over at Mid America Motorworks stated that it could be the MAF sensor or the relays that go with it, mainly the relays as the MAF is hard to diagnose. Anyone had this problem?
Also are the parts from Mid America pretty good or is there a better place to get them?
Also are the parts from Mid America pretty good or is there a better place to get them?
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
How does the car idle in gear or in park/neutral? 
Best solution:
Remove your TB and disasemble/remove the bottom housing off (the part with the IAC sensor threaded into it) the TB...clean the TB bores, IAC pintle and the internaly airpassages in IAC's housing....reassemble.
Assuming you haven't messed with the throttle stop screw - ensure that you TPS minimum voltage is between .40 - .62 vdc and do IAC reset proceedure.
OR
You can get some TB cleaner and try to spray the crap out of the TB while it is still mounted on the car and hope that gets it.
Parts: It depends on what parts you buy but you usually only get what you pay for. Most big catalog companies price match so shop around.
Best solution:
Remove your TB and disasemble/remove the bottom housing off (the part with the IAC sensor threaded into it) the TB...clean the TB bores, IAC pintle and the internaly airpassages in IAC's housing....reassemble.
Assuming you haven't messed with the throttle stop screw - ensure that you TPS minimum voltage is between .40 - .62 vdc and do IAC reset proceedure.
OR
You can get some TB cleaner and try to spray the crap out of the TB while it is still mounted on the car and hope that gets it.
Parts: It depends on what parts you buy but you usually only get what you pay for. Most big catalog companies price match so shop around.
Last edited by engle1147; Mar 26, 2010 at 03:50 PM.
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Thread Starter
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Joined: Mar 2010
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From: West Columbia SC
Thread Starter
Advanced
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
OK, here is the latest update. AS you all know I got the car off the trailer yesterday, and brought it home with it hesitating and acting like it was out of gas, which leads me to believe it was the fuel filter. The car had been on the trailer,backed in with its butt down, which meant all the gas headed back to the back, so we had to push it a little on the trailer to get it straight and then it started for a few minutes. We had to push it off the trailer the rest of the way to get it started again. I drove it home and parked it in my driveway. Later in the evening I started it up and drove it into my garage. This morning I go out to start it and it will just turn over but it wont start up. I went and got some MAF cleaner and cleaned out the MAF real good and let it dry and put it back in, but that didnt help any. I am stuck and not sure what to do next. So long story short, it no workie....
Drifting
Joined: Sep 2004
Posts: 1,961
Likes: 2
From: Fort Knox
you could replace the relay for the maf, it's fairly cheap to replace and easy to get to, it sits right behind the battery. But honestly it sounds like you have a bad MAF. My 86 didn't throw codes and it was still doing exactly what yours is doing. First I replaced my MAF relay then just went ahead and replaced the MAF and bingo, no more problems!
Last edited by snoopdan; Mar 27, 2010 at 11:11 AM.
Thread Starter
Advanced
Joined: Mar 2010
Posts: 50
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From: West Columbia SC
you could replace the relay for the maf, it's fairly cheap to replace and easy to get to, it sits right behind the battery. But honestly it sounds like you have a bad MAF. My 86 didn't throw codes and it was still doing exactly what yours is doing. First I replaced my MAF relay then just went ahead and replaced the MAF and bingo, no more problems!
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Do the stuff in post #7 first.
Check for stored trouble codes (do a search here on the forum) This is very important...doing this will minimize your guess work.
Get a fuel pressure gauge that will screw onto the fuel rail. Do some pressure checks.
If no stored trouble codes:
If you don't know how old all the gas in the tank is you might want to pump that out and try to partially drain the fuel lines/rails by replacing the inline fuel filter. Refill it with fresh gas.
Check for stored trouble codes (do a search here on the forum) This is very important...doing this will minimize your guess work.
Get a fuel pressure gauge that will screw onto the fuel rail. Do some pressure checks.
If no stored trouble codes:
If you don't know how old all the gas in the tank is you might want to pump that out and try to partially drain the fuel lines/rails by replacing the inline fuel filter. Refill it with fresh gas.
Thread Starter
Advanced
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Do the stuff in post #7 first.
Check for stored trouble codes (do a search here on the forum) This is very important...doing this will minimize your guess work.
Get a fuel pressure gauge that will screw onto the fuel rail. Do some pressure checks.
If no stored trouble codes:
If you don't know how old all the gas in the tank is you might want to pump that out and try to partially drain the fuel lines/rails by replacing the inline fuel filter. Refill it with fresh gas.
Check for stored trouble codes (do a search here on the forum) This is very important...doing this will minimize your guess work.
Get a fuel pressure gauge that will screw onto the fuel rail. Do some pressure checks.
If no stored trouble codes:
If you don't know how old all the gas in the tank is you might want to pump that out and try to partially drain the fuel lines/rails by replacing the inline fuel filter. Refill it with fresh gas.
Thread Starter
Advanced
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Do the stuff in post #7 first.
Check for stored trouble codes (do a search here on the forum) This is very important...doing this will minimize your guess work.
Get a fuel pressure gauge that will screw onto the fuel rail. Do some pressure checks.
If no stored trouble codes:
If you don't know how old all the gas in the tank is you might want to pump that out and try to partially drain the fuel lines/rails by replacing the inline fuel filter. Refill it with fresh gas.
Check for stored trouble codes (do a search here on the forum) This is very important...doing this will minimize your guess work.
Get a fuel pressure gauge that will screw onto the fuel rail. Do some pressure checks.
If no stored trouble codes:
If you don't know how old all the gas in the tank is you might want to pump that out and try to partially drain the fuel lines/rails by replacing the inline fuel filter. Refill it with fresh gas.
Team Owner
Joined: Jan 2003
Posts: 20,322
Likes: 248
From: Summerland B.C. Canada
Return the code reader, all you need is a paper clip or a piece of wire.
http://members.shaw.ca/corvette86/No...it%20Check.pdf
Thread Starter
Advanced
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
http://members.shaw.ca/corvette86/Code%2032.pdf
Return the code reader, all you need is a paper clip or a piece of wire.
http://members.shaw.ca/corvette86/No...it%20Check.pdf
Return the code reader, all you need is a paper clip or a piece of wire.
http://members.shaw.ca/corvette86/No...it%20Check.pdf
Team Owner
Joined: Jan 2003
Posts: 20,322
Likes: 248
From: Summerland B.C. Canada
Fuel pressure test would be a good place to start.
http://members.shaw.ca/corvette86/En...ButWontRun.pdf
http://members.shaw.ca/corvette86/Fu...mDiagnosis.pdf
http://members.shaw.ca/corvette86/Ig...System-EST.pdf
Thread Starter
Advanced
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Fuel pressure test would be a good place to start.
http://members.shaw.ca/corvette86/En...ButWontRun.pdf
http://members.shaw.ca/corvette86/Fu...mDiagnosis.pdf
http://members.shaw.ca/corvette86/Ig...System-EST.pdf
http://members.shaw.ca/corvette86/En...ButWontRun.pdf
http://members.shaw.ca/corvette86/Fu...mDiagnosis.pdf
http://members.shaw.ca/corvette86/Ig...System-EST.pdf