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1987 Iroc 5.7

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Old 08-02-2017, 07:41 PM
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1987 Iroc 5.7

Hello, Not sure if the connectors are in the correct realys. MAF burn off, Fuel pump,MAF power. pLEASE HELP.
Old 08-03-2017, 02:47 PM
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Re: 1987 Iroc 5.7

Old 08-03-2017, 02:48 PM
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Re: 1987 Iroc 5.7

Nice Thank you.
Old 08-03-2017, 02:54 PM
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Re: 1987 Iroc 5.7

If your fighting a code 36 you might have the wrong relays installed.
https://www.thirdgen.org/forums/tpi/...6-44-86-a.html
Old 08-03-2017, 03:18 PM
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Re: 1987 Iroc 5.7

replaced burn off, maf, maf relay with GM. My problem is when cold it starts fine but idles poorly, sputters, pops and a bang noise if I rev it up and sounds like it is sucking air at the MAF. Once it warms up it idles good and the sucking air sound goes away. I have no check engine light on, checked for vac leaks, all tuned.I just keep replacing parts with no success.
Old 08-03-2017, 03:37 PM
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Re: 1987 Iroc 5.7

I'm wondering if your hearing the iac vacuum cold start. There might be a ninth injector issue (partially plugged).
Old 08-06-2017, 09:15 AM
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Re: 1987 Iroc 5.7

Car fires right up, also feels like it is missing.
Old 08-07-2017, 10:13 PM
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Re: 1987 Iroc 5.7

Sounds like a cammed motor almost until it warms up?
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