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injector pulse problem on 1,3,5,7

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Old May 22, 2012 | 07:04 PM
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injector pulse problem on 1,3,5,7

hi i have a 1985 T.P.I. i am getting noid on 2,4,6,8 on 1,3,5,7 no noid
but i have a hot on both the power and ground wires on the odd number bank and the cooling fan runs , anyone have any similar problems they found a cure to?
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Old May 22, 2012 | 07:10 PM
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: injector pulse problem on 1,3,5,7

sounds like you have a bad injector driver in the 1226870, you might think of upgrading to the 1227165.

http://www.eecis.udel.edu/~davis/z28/ecm_swap/
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Old May 22, 2012 | 07:24 PM
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Re: injector pulse problem on 1,3,5,7

i forgot to mention it's in my 85 corvette not my trans am is that the same part #?
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Old May 22, 2012 | 07:32 PM
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: injector pulse problem on 1,3,5,7

Originally Posted by hwytom
i forgot to mention it's in my 85 corvette not my trans am is that the same part #?
The 1226870 was a one year only 1985 corvette and f-body
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Old May 22, 2012 | 07:47 PM
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Re: injector pulse problem on 1,3,5,7

ok so i can upgrade it then to the 1227165 just install or is there other things that need to be done? i just pulled the computer and it looks like it has been changed once before someone painted it black with no markings on it
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Old May 22, 2012 | 08:08 PM
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: injector pulse problem on 1,3,5,7

the 870 has a eprom in it and the chip access cover is on one side. The 165 has a memcal and a center plate on the ecm to acces the memcal. Follow the instructions for the rewiring on the link above. you would need a 1227165 ecm and a memcal fro a 350 automatic 86-87 camaros do not have vats, The 89 programing for the 1227165 I feel is the best.
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