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Old 02-10-2014, 07:59 PM
m1782t m1782t is offline
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Re: '87 ciera needs a choke

2.5 engine, Mat wires are yellow and black/pink. I do get 5 volts accross the leads. However, today I did get an engine light after getting it started and warmed up. Codes were 23 (mat circuit problem - oh really!!) and 35 (iac/fuel pressure) the iac and tps have been replaced and the fuel pressure was fine last year when I checked it. My guess is that 35 was generated due to the 23. After 3 back surgeries I don't bend too good so will have to get someone to trace down the wires. Do the leads go directly to the pcm, or is there something else in that circuit? Also yes the fuel pump does run a couple seconds both when you key the ignition and after the ignition is turned off. thanks
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