1994 Chevrolet S-10 wont stay running

TALAN

MEMBER
1994 CHEVROLET S-10
2.2L
4 CYL
2WD
MANUAL
310,000 MILES

My truck will run for 5 minutes then cut out. Without starting again unless it sits a while. I was told to replace the ignition module and I did, same result, I put a new fuel filter in. No change. What can be causing this? EGR valve? I appreciate you taking the time to help me look forward to your response.

2 Replies

JDL

MECHANIC
16,098 POSTS

When the problem is ongoing, if it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If you have spark everywhere check fuel pressure.

Also check for fuel injector pulse, when problem is ongoing. Check for applicable trouble codes.

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Saturday, March 22nd, 2014 AT 11:21 AM

JDL

MECHANIC
16,098 POSTS

Just to add, to check for codes use a jumper wire between the A & B terminals at the datalink connector. Then turn key just till the dash lites come on, no further. The mil on the dash starts flashing, you count the flashes to get the codes. Your looking for two digit codes.

If I suspected you were losing the rpm signal, that comes from the crank sensor. Usually the crank sensor is cheaper than the ignition module. I'm not saying replace your crank sensor, because at the moment, I don't know. You need to do some testing.

Note the picture for location of terminals A & B

Image (Click to make bigger)