Mazda 626 - Heavy Vibration / Shaking (bad torque converter)
- 10 years ago
1995 626 2.0L - This is the entire reason for this channels existence. All of the videos that follow this one are a direct result of trying to get rid of the vibration in my car.
Had all of my motor mounts replaced, cleaned MAF and throttle body. Finally figured out it was at least in part; due to a bad exhaust valve on cylinder #3. Had a shop do a compression test and sure enough got 40% compression loss! Leak down test pinpointed the culprit to cylinder 3 exhaust valve.
Part of the reason the car was shaking so badly was due a cylinder not performing well and causing a cylinder imbalance. Another part is that the torque converter was bad (diagnosed by a dealership). Yet, another culprit is a fuel pump leak inside the fuel tank causing low fuel pressure. All of these issues combined is what flipped my world upside down for over 8 years.
If your car looks and sounds like what mine does in this video get a compression and leak down test done! It only cost me $86 for both tests and now after 8 years I finally know what is causing the vibration. Yes, I drove the car like this for 8 years (very light use though). It started out like a kitten purring and I kind of liked it. Then over the years it goes worse as the cylinder lost more and more compression (which now I know why).
Horrible gas mileage, vibration, shaking, and feels like the car has 1/2 the power it used to. For the longest time I thought I had a gasoline leak because I'd chew right through a whole tank of gas in a matter of days. Yet another culprit was the EGR position sensor reporting the incorrect position (faulty sensor) causing low MPG. Was getting about 15-17mpg with very light use.
Glad I got video of the whole ordeal so that it might save you the time and frustration it cost me over the course of many years.
Had all of my motor mounts replaced, cleaned MAF and throttle body. Finally figured out it was at least in part; due to a bad exhaust valve on cylinder #3. Had a shop do a compression test and sure enough got 40% compression loss! Leak down test pinpointed the culprit to cylinder 3 exhaust valve.
Part of the reason the car was shaking so badly was due a cylinder not performing well and causing a cylinder imbalance. Another part is that the torque converter was bad (diagnosed by a dealership). Yet, another culprit is a fuel pump leak inside the fuel tank causing low fuel pressure. All of these issues combined is what flipped my world upside down for over 8 years.
If your car looks and sounds like what mine does in this video get a compression and leak down test done! It only cost me $86 for both tests and now after 8 years I finally know what is causing the vibration. Yes, I drove the car like this for 8 years (very light use though). It started out like a kitten purring and I kind of liked it. Then over the years it goes worse as the cylinder lost more and more compression (which now I know why).
Horrible gas mileage, vibration, shaking, and feels like the car has 1/2 the power it used to. For the longest time I thought I had a gasoline leak because I'd chew right through a whole tank of gas in a matter of days. Yet another culprit was the EGR position sensor reporting the incorrect position (faulty sensor) causing low MPG. Was getting about 15-17mpg with very light use.
Glad I got video of the whole ordeal so that it might save you the time and frustration it cost me over the course of many years.