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Old 01-23-2007, 11:29 AM
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theobern theobern is offline
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Re: 91 caprice backfire @ 65+

Ok lets see. Parts that were replaced.... MAP, TPS, EGR, Pick up coil... not sure, been working on this problem for a few years on and off. At first it would only act up when it was warm out. Before he put in the fuel injectors he thought forsure it was the distributor, but it was not, so it was removed. Although they may not have test drove it at speed after install. The reluctor... thats a new one on me. I guess I did not repace everything. what ever I did not replace I tried to check the best I could... knock sensor and the tps circuit. Some of the other stuff that you mentioned is harder for me to check. I can ask the mechanic though.

I replace Fuel Pump and filter, Intake Manifold gasket because it acted like a vaccum leak, loss of breaks at low rpm. I have a Allied Signal Fuel Injection/ Electronic Ignition Manual and tried the best I could, but it was still a little tuff. Oh! The trans has stopped kicking down since repairs have been done.

Unfortunatly I took it back in yesterday and they said that it was the EGR that I replaced... said it was broke and not even mountable...$135. This is the second time that a mechanic has told me not to use cheeper autoparts, he used an OEM EGR. Have you herd this...

Thanx.
I will let you know if that was the problem. Your help is greatly appreaciated. I just realized that I typed 91 instead of 90 as the thread title...!

Last edited by theobern; 01-23-2007 at 03:28 PM.
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