'97 F350 7.3L running bad.

1372 Views 5 Replies 4 Participants Last post by Kimber1911, Oct 25, 2015

gene1977

Discussion Starter · Oct 22, 2015

Need help. Truck started missing and smoking. Have put new injectors, uvch's, cps,icp,ipr. It will run but still missing and smoking and the check engine light and codes say icp high, and high to low on cylinders 1,2,&7. What is my next step in getting this truck running good again. Thanks.

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RT

· #5 · Oct 24, 2015

The ICP can be biased where it REPORTS a too high number which is false. The computer respond by lowering the IPR duty cycle but the value won't come down so it throws a code. It runs bad because the IC pressure is actually lower than required as the PCM has dropped the duty cycle.

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