Question about 2000 Saturn Ls 4dr Sedan

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My Cadillac Catera 98 stalls out during driving ,after 15 min.restart then after few mile stall out again. I checked for DTC,s - no DTC,s, no spark,no ground to fuel pump relay,ECM relay no 10 works.I,m Nissan Master Tech and triing fix it my self ,do not have wiring diagram .Some advice Please. Similar issues with my 2000 Saturn LS2 (identical engines, I believe), and my mechanic's computer codes reader returns outrageously false, erroneous data for the entire system, but returns correct data for my other vehicle, which leads him to believe the computer (ECM) is fried. My initial thought was to replace the ICMs (since there are 2 of them, I'd start with the 2-4-6 block, run the car and see if that solved the "dying at stops" problem, since my computer can't give me any indications at the moment (looking for a USED computer right now).

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Catera issue most likely is the crankshaft position sensor.

Posted on Aug 28, 2009


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