85 start then stop what is it.
Drifting
Joined: May 2002
Posts: 1,509
Likes: 3
From: Hazel Park MI
Re: 85 start then stop what is it. (Mach85)
Or fuel filter clogged. If you have the shop manual, you can check the FPR by using the flow chart. You will need a FP gauge to determine if it is the FPR. Low FP can mean a bad FP diaphram, which is what I'm going through, plus some. Good Luck! :seeya
Thread Starter
Instructor
Joined: May 2003
Posts: 153
Likes: 0
From: Gretna LA
Re: 85 start then stop what is it. (jmrl98)
I should have mentioned this. I changed the fuel filter and then checked the fuel pressure at the fuel rail it was good right at 35. Then I unplugged the maf and had no change. I have a haynes manual it has a step for checking the FPR but I say change it anyway I think it is original with the car. Should I get a stock relacement just to get it running or Mod?
I was thinking someone else would have had the exact same problem and say it was not the FPR it was something else.
I will start with the FPR and give you a update.
Thanks guys
[Modified by Mach85, 10:24 PM 5/12/2003]
I was thinking someone else would have had the exact same problem and say it was not the FPR it was something else.
I will start with the FPR and give you a update.
Thanks guys
[Modified by Mach85, 10:24 PM 5/12/2003]
Drifting
Joined: Nov 2001
Posts: 1,783
Likes: 2
From: Latham NY
Re: 85 start then stop what is it. (Mach85)
Could you have water (condensation) in the gas? Try adding some isoproply alcohol (not methanol) to the gas.
Maybe you have leaking injectors. Pull the spark plugs and tell us what they look like.
Maybe you have leaking injectors. Pull the spark plugs and tell us what they look like.
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Thread Starter
Instructor
Joined: May 2003
Posts: 153
Likes: 0
From: Gretna LA
Re: 85 start then stop what is it. (OnDVirg)
DING DING DING
OnDVirg, you were right! Unplugged the MAF and it sat there and idled.
Very rough, but for the 1st time it was RUNNING.
THANKS FOR YOUR HELP!! I owe you a beer :D :cheers: :thumbs:
OnDVirg, you were right! Unplugged the MAF and it sat there and idled.
Very rough, but for the 1st time it was RUNNING.
THANKS FOR YOUR HELP!! I owe you a beer :D :cheers: :thumbs:
Thread Starter
Instructor
Joined: May 2003
Posts: 153
Likes: 0
From: Gretna LA
Re: 85 start then stop what is it. (OnDVirg)
Thats ok at least I know what the problem is. Good job dude I would have never thought the MAF would keep it from running. Now that I need to replace it should I go with a MOD replacement. Crap you are right replacement from Autozone is 135.00 with a 45.00 core trade in.
Mark
Mark
Instructor
Joined: Oct 1999
Posts: 145
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From: San Francisco, CA, USA
Re: 85 start then stop what is it. (Mach85)
Actually, that's pretty good...OEM Delco is $300+. I also noticed in one of the catalogs a "heavy duty" MAF I think for under $200. I don't know what makes it heavy duty or why it's so much cheaper than a Delco replacement. Maybe someone else has some experience with these. I do know that if it's really heavy duty, it might be worth trying, since these are susceptible to the conditions under the hood.