Cold start injector removed
09-25-2014, 07:48 PM
#1
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Location: Molena, Ga
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Car: 88 5.7 Iroc
Engine: L98
Transmission: 700R4
Cold start injector removed
I have a 88 5.7 IROC. The previous owner installed a 1989 or later tpi manifold without the ninth injector. The car is very hard to start when engine is cold. I have replaced injectors, manifold temp switch, checked fuel pressure( it is within specs). The only thing left is computer or prom. The info I have found on the Ecm's, the part numbers are the same for 88 and 89. That leaves the prom. Will the prom chip change the cold start enrichment so the engine will start or do I need to look some where else?
09-26-2014, 10:43 AM
#2
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Car: 1985 El Camino Choo Choo
Engine: L31 Crate 350 w/ TPI
Transmission: GN 200-4r
Axle/Gears: GN 8.5 3.73
Re: Cold start injector removed
Absolutely, the prom change will fix this issue. The '89 proms have the cold start deleted in favor of enrichment for a cold start.
09-26-2014, 06:01 PM
#3
Supreme Member
Re: Cold start injector removed
You'll need to have VATs deleted if using the '89 PROM, easiest way might be to see if TunedPerformance(here on TGO) is still around, or maybe Ed Wright might still be doing chips.
09-26-2014, 08:49 PM
#4
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Car: 88 5.7 Iroc
Engine: L98
Transmission: 700R4
Re: Cold start injector removed
Thank ya'll for the info. Now I have something to go on.
Last edited by Longshot379; 09-27-2014 at 06:33 AM. Reason: Can't spell
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