engine light in 88 burb

Hi,
I have a 4 bolt 350 in a 88 burb, rebuilt with 70,000 + km on it. I will be driving, or just starting, the engine will run rough and the engine light
will come on. The engine misses. If I turn the engine off, let it sit a couple of seconds and turn it back on it's fine. What gives here? Also sometimes it will cut out for a second or two, then cut back in and all is well. I can't seem to reproduce the problem, for example I thought it might be a lose wire, so thought perhaps going around a corner or something, but nothing seems to trigger it, it's just random.
Any thoughts,
Clint
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Hi Clint,
Very good questions.
I have an '88, but its an S-10, so I don't know if I can help or not, just give you some ideas that I gleened from trying to keep my rig going. Maybe others can add to or detract from that. I Bought used back in Feb.. One of the biggest sanfu's I've experienced in 50 + years. Problems up the ying yang.
My first thought reading your post was the rap test on the computer. I'm not sure my memory is serving me correctly here. I mean if thats what they call that ECM test. Second thought, was take it to an automotive electronics specialist. Reason I say that is, I didn't know, and had mechanics replaceing all kinds of stuff on the outside of my motor when it wasn't necessary. Ultimately, the guts were bad and going all the while. No one properly diagnosed this however, but Mobile 1 did. It was the last thing I did before I wiped out the cam, the cam bearings and main bearings. Saved me some money, finally. I didn't follow a proven trouble-shooting path. Who has time for that right? Doesn't seem most give that idea much credence these days. Its either buy 'em or throw them away it seems.
Vacuum anybody?
Hatt
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. Re: engine light in 88 burb ===== =====
(DJHatt)
<edited profusely>
Hi Clint, Very good questions. I have an '88, but its an S-10, so I don't know if I can help or not, just give you some ideas that I gleened from trying to keep my rig going.
Maybe others can add to or detract from that.
Vacuum anybody? Hatt ====== ======
I'll second....on the Vacuum.
gotta start somewhere......
marsh monster ~;~thinks DJ has been studying his Diagnostic Flow Charts~:~
.
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Clint,
No likely to be vacuum as others suggested as if it were, the problem wouldn't go away with a restarting of the engine. The SES light coming on indicated the ECM (computer) has detected an error in one of the various components it monitors. Go to this website, follow the instructions and post back here with what codes you get from the ECM.
http://www.georgiasyty.com/aldl.htm
Doc

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