Ok I drive a 1991 Nissan Stanza XE Automatic. It's got a four cylinder inline fuel injected engine. Recently it's been getting really hot here and I've been using the AC more and more. When I use the AC the RPM's drop from about 750 to 600 causing the car to shake. Sometimes the RPM's fluctuate between 600 to 700 RPM's but it is random when it does that. I did a battery load test and the battery is in good shape. It's at 12.7 when the car is off and 13.8 when the car is running. The alternator is in good shape as well, I did a load test on it too. We have replaced in the past year the IAC, TPS, Air filter, and throttle body. I made sure to clean and check the EGR valve and the MAF sensor as well. I think the problem is the MAF sensor though but am not sure. The wiring on the car is very old and brittle too. I have to tape the wiring to the IAC and the TPS to keep them plugged in while driving.
Apr 23, 2012 at 3:11 AM
