bobwhite Posted March 28, 2007 Share Posted March 28, 2007 Not feeling too well, I thought I would ask if anyone has had the same problems before I start digging into the codes and try to figure out whats wrong. 1990 Reatta, about 110,000 miles. CA car, no rust, garaged, have service manual. This morning, service engine light stayed on a lot longer than usual before going out. Now light cycles, comes on for a while, goes off, then comes on again. While light is on, engine surges when idling, when driving, it stumbles when gas pedal is depressed before it accelerates. Only problem in last ten years was the MAF sensor. 02 sensor is original. Codes haven't been looked at or cleared in years, should I clear the codes, then see what sets? Link to comment Share on other sites More sharing options...
Roadster90 Posted March 28, 2007 Share Posted March 28, 2007 See what E code has set with a "C" on the end of it...Opps, but if it is intermittent it may have set an HC=currentH=historyCopy down any e codes please Link to comment Share on other sites More sharing options...
bobwhite Posted March 28, 2007 Author Share Posted March 28, 2007 I get what appears to be:E031C & HE034C & HThe rest are HB119HB482HB552HR025HR034HIt looks like I have MAF sensor problems again. It was replaced 7/05. Is there a recommended brand of rebuilt I should buy? I'll follow the instructions in previous postings to see if cleaning the wires helps. Link to comment Share on other sites More sharing options...
Guest Greg Ross Posted March 28, 2007 Share Posted March 28, 2007 02 Sensor should probably be replaced, normal service interval is usually every time you do spark plugs.The MAF is a fairly pricey little devil as I recall, are you going looking for new or used? Can't imagine there's a remanufatured one available. When removing and cleaning be very careful, use a soft bristle brush, something like the Wifes' make-up brush! Wash and dry, she'll never know! Link to comment Share on other sites More sharing options...
Machiner 55 Posted March 29, 2007 Share Posted March 29, 2007 <div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body"> ...something like the Wifes' make-up brush! Wash and dry, she'll never know! </div></div> Years ago, a co-worker named "Tony" and I were talking about various means of removing facial hair. We hit upon the new twin blade shavers and I said I didn't care for them because they clogged up with hair. He suggested using a tooth-brush to remove the hairs and that it worked pretty well. I said I didn't think I'd like using the tooth brush again after using it to clean the hair out of the blades. He said it didn't bother him at all because he used his wife's tooth-brush. Link to comment Share on other sites More sharing options...
Guest TommyH Posted March 29, 2007 Share Posted March 29, 2007 ive just noticed that this seems to be a problem for many reatta ownes all of a sudden. how wierd is that?? Link to comment Share on other sites More sharing options...
bobwhite Posted March 29, 2007 Author Share Posted March 29, 2007 I tapped the MAF sensor with the wooden back of a screwdriver and the engine quit. It started up again, so I was wondering if that is normal. I've never tapped a known good sensor, so I don't know what should happen. I cleaned the wires, but it didn't seem to make a difference. Can any other part set a E034 code besides the MAF sensor? Link to comment Share on other sites More sharing options...
2seater Posted March 30, 2007 Share Posted March 30, 2007 It shouldn't quit or stumble when you tap on it. Generally it will quit if you disconnect it while running but will start and run with it disconnected. It will usually quit or stumble if connected while the engine is running also. It sounds like it is ill and no amount of cleaning will help. Link to comment Share on other sites More sharing options...
122838B Posted March 30, 2007 Share Posted March 30, 2007 I had much the same problem on my 90 coupe, except the engine would die when the car came to a stop. Cleaned up the throttle body and the service engine light is gone and the car (so far) is running fine. Link to comment Share on other sites More sharing options...
bobwhite Posted April 14, 2007 Author Share Posted April 14, 2007 I received a Delco rebuilt MAF & O2 sensor today from gmpartsdirect. I put the MAF sensor in and cleared the codes. What a difference. The sensor must have been going bad for some time. It hadn't been running quite right for a few months until it finally became hard to drive. I disconnected it and drove it only when necessary. I also replaced the IAC unit I had bought on eBay. I will put the O2 sensor in tomorrow. I took it out for a long ride and it didn't set any E codes at all, and no more service engine light. Link to comment Share on other sites More sharing options...
122838B Posted April 15, 2007 Share Posted April 15, 2007 Forget my 6/30 post that cleaning the throttle body caused by surging and stalling problem. It recurred and I have since changed (on 7-14) the idle air control valve, which so far seems to have been the problem. However, I want to give it a couple weeks to see if there are any more surprises. Link to comment Share on other sites More sharing options...
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