1995 Chevy Blazer Starts Then Dies

1995 CHEVROLET TRUCK
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DONVROW
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  • 1 POST
I have a 95 chevy blazer LS, approx 170,000 miles I cannot get it to start. it is one of the "w" vin codes, and has the OBD II system in it. It turns over and gets spark, I have put a new fuel filter in, a new fuel pump, a new fuel relay, and a new EGR valve($175). And it still will not start the fuel pressure is good. It has A CMFI fuel injection system. If we prime the engine it will start and then die. Any Ideas as to what my problem could be. When it died I had just come back from about a 150 mile drive and come around a corner and it died like it was starving for fuel. What should I check next?
Apr 21, 2006 at 2:35 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
Humm Pull the plugs, put oil in all the culinders, spin the engine, put in a little more oil, spin the engine. Replace the plugs. It sounds like you might have washed the cyls with gas causing very low compression.
Apr 21, 2006 at 5:13 AM
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DUDER1
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these s-10's, and s-15's, always have this issue... i've had it myself...., check your fuse box... there should be a fuse labeled ECM, or ECM1... check it, then replace... replace it anyways.... should be a 15 amp.
THis fixed my problem... same one your having. Then, i found out that my oil sending unit was on it's way out... it was shorting out that particular fuse. I just unpluged the the wire connection at my sending unit... and it fired right up. The only other thing i think can cause this would be the modual in the distributor... but i would go with the fuse. Good luck
Apr 23, 2006 at 3:42 PM
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Suggested Repair

The expert suggested the cylinders may have been washed down with fuel, causing very low compression. Remove the spark plugs, add oil to each cylinder, crank the engine, add a little more oil, crank again, and install new plugs. A later reply also suggested replacing the ECM or ECM1 fuse (about 15 amp) and checking whether a failing oil-pressure sending unit is shorting that circuit; the distributor module was mentioned only as a less likely possibility.

Conversation Summary

The owner of a 1995 Chevrolet Blazer with about 170,000 miles and CMFI injection said it cranks and has spark and good fuel pressure but will not stay running. A new fuel filter, pump, relay, and EGR valve did not help; priming lets it start briefly, then it dies, and it originally stalled after a long drive as if starved for fuel. An expert recommended oiling the cylinders and replacing the plugs to address possible fuel wash and low compression. Another reply reported the same symptom fixed by replacing the ECM fuse after an oil sending unit shorted it.

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