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Forum: C4 ZR-1 Technical Postings

01-31-2013

Replies: 46

90 zr1 no start

Views: 13,690

Posted By mfranklin162

Re: 90 zr1 no start

Well, it started and ran two times, no wont start again, have not had time to get back on it, been pretty busy! Will post what I find when I find it!!

Forum: C4 ZR-1 Technical Postings

01-28-2013

Replies: 46

90 zr1 no start

Views: 13,690

Posted By mfranklin162

Re: 90 zr1 no start

Ran flow chart a-3 by the book!! That is why I replaced the module, all pins tested good end to end!! Also ran crank no start chart, it stated to replace ecm, I happen to be an ase certified gm...

Forum: C4 ZR-1 Technical Postings

01-23-2013

Replies: 46

90 zr1 no start

Views: 13,690

Posted By mfranklin162

Re: 90 zr1 no start

I have 47-48 psi that hold well, when innitially crankling I get 1 injector pulse and it may pulse once in a blue moon while cranking.

Forum: C4 ZR-1 Technical Postings

01-22-2013

Replies: 46

90 zr1 no start

Views: 13,690

Posted By mfranklin162

Re: 90 zr1 no start

good fuel pressure on gauge, has spark or wouldnot run on cleaner.

Forum: C4 ZR-1 Technical Postings

01-22-2013

Replies: 46

90 zr1 no start

Views: 13,690

Posted By mfranklin162

90 zr1 no start

Have replaced ignition module under intake and had ecm re-built, car will run on carb cleaner, I have checked all fuse and ohmed injectors between fuse and ecm with all reading between 12 and 12.4...

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