Hey,
Wanted to see if anyone has had any experience with this or might be able to help me isolate the problem.
My Sisters 2004 MDX was stalling out on her when she would come to a stop at first. It seemed like it was the catalytic converter throwing codes and just causing it to stall out when put under load with low RPMS. We replaced the upstream and downstream catalytic converter and everything seemed fine when we test drove it. Gave it back to her and on her way back she came to a stop light and it started to stall out again when stopped. She got it to a parking lot and left it for me to look at the next day. When I went to see if I could get it to move to at least position it for a tow truck it would start and idle perfect when sitting in park not in gear. As soon as I would move it to reverse or drive it would "drop" into gear and put so much load on the engine that it would stall. The next time when I went to put it in reverse I pushed the break down and gave it some gas and it would push its way in to gear. When I would do that it would try to move in reverse but the break obviously kept it from moving. After the initial forced change in to gear it would idle perfectly fine in gear and I could drive it around and even change gears a couple times until it would stall out on the change or when coming to a complete stop. We also decided to risk the drive home since it was mostly highway and could be accomplished without stopping and we were able to drive it 20 miles at high speed (75 mph) with no problem. We also could navigate neighborhood driving without an issues, but as soon as we would come to a stop or try and change gears we would end up with a problem.
My guess is that it is an issue with the transmission or the torque converter. Although it would be my first transmission job, I am mechanically inclined enough and have access to a lift to complete the job regardless of how long it takes. But I dont want to spend a couple hundred dollars on a new transmission or fixing the old one when it could possibly be something simple. Any help isolating the issue would be very much appreciated. FYI there are currently no codes being thrown by the OBDII.
Thanks!
Wanted to see if anyone has had any experience with this or might be able to help me isolate the problem.
My Sisters 2004 MDX was stalling out on her when she would come to a stop at first. It seemed like it was the catalytic converter throwing codes and just causing it to stall out when put under load with low RPMS. We replaced the upstream and downstream catalytic converter and everything seemed fine when we test drove it. Gave it back to her and on her way back she came to a stop light and it started to stall out again when stopped. She got it to a parking lot and left it for me to look at the next day. When I went to see if I could get it to move to at least position it for a tow truck it would start and idle perfect when sitting in park not in gear. As soon as I would move it to reverse or drive it would "drop" into gear and put so much load on the engine that it would stall. The next time when I went to put it in reverse I pushed the break down and gave it some gas and it would push its way in to gear. When I would do that it would try to move in reverse but the break obviously kept it from moving. After the initial forced change in to gear it would idle perfectly fine in gear and I could drive it around and even change gears a couple times until it would stall out on the change or when coming to a complete stop. We also decided to risk the drive home since it was mostly highway and could be accomplished without stopping and we were able to drive it 20 miles at high speed (75 mph) with no problem. We also could navigate neighborhood driving without an issues, but as soon as we would come to a stop or try and change gears we would end up with a problem.
My guess is that it is an issue with the transmission or the torque converter. Although it would be my first transmission job, I am mechanically inclined enough and have access to a lift to complete the job regardless of how long it takes. But I dont want to spend a couple hundred dollars on a new transmission or fixing the old one when it could possibly be something simple. Any help isolating the issue would be very much appreciated. FYI there are currently no codes being thrown by the OBDII.
Thanks!