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Tech & Fab
1991 4Runner No Spark
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<blockquote data-quote="caglezxj" data-source="post: 666163" data-attributes="member: 521"><p>Mo came through for me and let me borrow a couple MAF Sensors to try and the bad news it did not fix my issue. I do have spark since I fixed my MAF. But now I am back to square one. No check engine light and now that I have spark I don't have Injector Signal. I have power on the positive side. The negative side is grounded by the computer. Which is also my issue with my CEL. I checked continuity from the negative side of injector to the ECU and it's good. I'm leaning very heavy still that the ECU is toasted. I have good E1 ground. Battery negative terminal off, check E1 ground on ECU to the chassis near ECU mounting and on front fender and it checks good. So now I need to find an ECU from a local pull a part hopefully.</p></blockquote><p></p>
[QUOTE="caglezxj, post: 666163, member: 521"] Mo came through for me and let me borrow a couple MAF Sensors to try and the bad news it did not fix my issue. I do have spark since I fixed my MAF. But now I am back to square one. No check engine light and now that I have spark I don't have Injector Signal. I have power on the positive side. The negative side is grounded by the computer. Which is also my issue with my CEL. I checked continuity from the negative side of injector to the ECU and it's good. I'm leaning very heavy still that the ECU is toasted. I have good E1 ground. Battery negative terminal off, check E1 ground on ECU to the chassis near ECU mounting and on front fender and it checks good. So now I need to find an ECU from a local pull a part hopefully. [/QUOTE]
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