V8 mystery

[wkaufman]

I have a 1996. It sporadically will start and run for a few seconds, then die. It may repeat 2-3 times, then crank but not fire. Let it sit and it may or may not start normally. When it runs it runs fine. 70000 miles, cams welded. Have replaced idle control valve with no effect. Any suggestions out there?

 

[tardboy21]

Is it throwing any codes? Even if the light is not on, read and see what is there.

 

[popsracing]

Check for a bad or loose crank sensor, if you have access to a lab scope you can verify functionality. I have seen the connectors get loose on these and it won't necessarily throw a CEL.

 

[wkaufman]

Thanks. I haven't seen any codes. Will check out crank sensor.

 

[tardboy21]

when it does die, does it spudder and die or does it just cut out.

It sporadically will start and run for a few seconds, then die.

Also, are you telling me the car starts all by itself? Sorry couldn't resist.

 

[SuperHO]

crank sensor's cheap and easy and a likely culprit.

 

[bacernate]

Sounds like a crank sensor or fuel pump to me. A crank sensor is about 20 bucks so i'd start there by just putting one in.I see you live in rustville, so I'd soak the bolts a few days before you end up snapping one off.