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ChevyTech · 09-14-2008, 05:13 PM

It is possible that a worn distributor is causing problems but by the description of symptoms it does not sound like a worn distributor problem to me. On these distributors the housing/upper bushing area gets so worn out that the shaft will move sideways so far that the points on the pickup coil pole piece get hit by the reluctor points on the shaft. When this happens the ECM receives compromised signal for RPM and timing issues.

You could try disconnecting and plugging the hose to the EGR valve and taking it for a test drive.

It would be a good idea to do a compression test to rule out a lack of compression on one cylinder.

I see it’s your first post. Welcome to the message board.

09-14-2008, 05:13 PM	#2
ChevyTech Registered User Join Date: May 2004 Location: Minnesota Posts: 4,620	Re: 95 Tahoe engine miss It is possible that a worn distributor is causing problems but by the description of symptoms it does not sound like a worn distributor problem to me. On these distributors the housing/upper bushing area gets so worn out that the shaft will move sideways so far that the points on the pickup coil pole piece get hit by the reluctor points on the shaft. When this happens the ECM receives compromised signal for RPM and timing issues. You could try disconnecting and plugging the hose to the EGR valve and taking it for a test drive. It would be a good idea to do a compression test to rule out a lack of compression on one cylinder. I see it’s your first post. Welcome to the message board.