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jake150129
New User
Jul 22, 2007, 4:30 PM
Post #1 of 2
(3739 views)
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1986 IROC Z28 Camaro
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I have an 86 iroc z28. the stock engine was a 5.0 liter MFI and the original owner put a 1974 5.7 liter 350 in with a 1987 tuned port injection manifold. my problem is that the car stalls out at low speeds/at stoplights. Also I am getting around 5-7 MPG right now. It has the stock 700r4 4 speed auto in it. It only stalls out in Reverse, Neutral and Drive, but not in park. I checked the ECM and the ECM # is 1227165 with PROM 8958AMU. I can't tell if the ECM is stock 1986 or a remanufacted ECM. once the car hits about 500 rpm it starts to loop/chug and then the rpm goes down to around 250 for a minute an then stalls. Unfortunatly I can't put a scantool on it yet because I have not yet located the datalink connector. Original owner redit the entire dash/consol too. I know the 87 Iroc came with a 5.7 liter TPI and I also know the ECMs connectors for both years are the same in fact the ecm is the same ECM 1227165. I have not been able the find the PROM number for the 87 Iroc. I am wondering if I replaced the ECM and the PROM to a stock 1987 IROC Z28 that that would fix my problem. Also all the sensors are plugged in.
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dkubik
New User
Jan 18, 2008, 10:11 AM
Post #2 of 2
(3695 views)
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Re: 1986 IROC Z28 Camaro
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I had some similar problems like that, and found out it was my air tubes going to the Carb. Just a thought.
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