Mazda is running with Check engine light on. 2001 tribute runs rough. While driving car RPM drop off and car seems to studder. If you pump peddle car recovers but if you don't it is like its stalling. Any advise? RPMs drop off and I have tried severl fixes. O2 sensors Plugs wires EGR nothing seems to help. Now I've heard coil???? anyone have any suggestions? Thanks you. When I say studder its like a hesitation in the engine. I did have a shudder in the transmission when I got it but a flush and refill got rid of this problem. HELP this is driving me crazy


Rob

 

Get the Engine Light decoded before you start randomly replacing parts. AutoZone will do it for free. I purchased a CarChip which does that a lot more. The decoded error will steer you (and the members of this forum) to a more precise diagnosis.

 

Thanks but no codes are coming up! This has been a pain in the butt for me. I hate fixing by trial and ERROR...It gets expensive. Any help would be appreciated

 

Also wanted to mention there is a hesitation when starting from stop. If you pump the gas a bit this helps. Which part place in Canada will check the codes for you? I'm in Toronto

 

Try unplugging the vacuum hose to the EGR. Take a long vacuum hose and plug one end into EGR then suck on the other end (engine off) and listen for the valve working. If that is OK I would suspect a problem with the vacuum solenoid for the EGR. Plug that vacuum line and seal the connection on the EGR. Try driving the vehicle like that. If the problem goes away you have found the culprit. Common on these vehicles. Replace the solenoid (follow the vacuum line from the EGR to the solenoid..it had several vacuum lines attached to it. One in and two out. Also has a 2 prong electrical connection.

Before starting and driving after solenoid replacement, disconnect the negative battery terminal and step on the brake pedal for a couple of minutes...reconnect the battery and drive. You have cleared the computer and it must relearn your driving habits.

Good Luck

Kevin.