1996 Blazer Randomly Will Not Start And Stall (usually At Lower RPM)
Jan 24, 2012
My 96 2dr. Blazer with 121,000 on it . It will randomly not start. Come back next day starts and runs fine. It will randomly Stall (usually at lower RPM) it may start back up or not .If it dosen't start, it will start up 2 hours later, like nothing happened.
Fuel press. reads 58-62 lbs. running or with k.o.e.o., Even when it won't start. It holds press. for 2 min. c.e.l. never comes on when car won't start. c.e.l. would come on at close to red line and would be "left bank rich" Dont think it's crank or cam sensor cause their are no codes? Gonna check coil and ICM .
Checked for bad connectors at ecu, and everywhere, pulled, giggled on harness at ign. switch,plugs on drivers side under hood.Pump coming on even when car doesn't start. When it dies or doesn't start it doesn't sputter, like it's not getting gas ,I think it's voltage.
Car has new fuel pump and spider installed 2 years ago, run 44K every 6mos. Car is perfect inside and out Very well maintained . I want to keep this car forever.
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far:
- Checked all fuses, none are blown.
- Could not get a spark from the coil wire when next to block while turning it over
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- Ignition module tested ok (out of the vehicle at an auto zone and they said it was fine)
- can hear the fuel pump run at startup, (was replaced with a delphi pump last winter, but we could not get the fuel filter off at the time and he never replaced it)
- Did not check fuel pressure, but it sprayed out at test port when I pushed the valve.
PCM failure? What else?
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