This car belongs to a friend of mine
2006 Forester
N/A (Not Turbo)
Automatic
26,000 Miles
Drive By Wire
NO CHECK ENGINE LIGHT
Never been in any accidents
Never had any major work (pretty much just oil changes)
Problem:
The car will die when you come to a complete stop. It is very infrequent. Sometimes it’ll do it 4 times in a row. Sometimes it’ll go a few days without stalling. But on average I’d say every 1 in 10 stops it’ll stall out.
Stalling:
You don’t even realize the engine turned off. There is no shudder, no bouncing idle, nothing. The needle just continues it decent down the tach until it touches the bottom peg. It starts right back up though.
Conditions:
Have no effect. The engine can be cold or hot. Outside temp doesn’t matter either (40’s to 70’s). Has done it after backing out of the garage as well as coming to a stop light after a 50 mile commute. You can come to a quick stop or a slow one (not idle slow of course). When left in Neutral it has never stalled.
Tests:
Took it to the dealership and they cleaned the fuel system/throttle body. That didn’t work so they said nothings wrong with it and therefore, nothing they can do to fix it. I’ve plugged in my computer and read O2, RPM’s, fuel pressure, throttle position, coolant temp, intake temp, etc. and I’m not an expert on what I should be seeing but everything appears to be functioning as it should.
Vehicle Condition:
Very well taken care of. Low mileage. Apart from stalling the car runs like it’s new. No engine bogging or rough shifts.
I personally think it’s something with the transmission, not sure what. Could be something sticking, some debris stuck, or a sensor/solenoid going out. I dunno, I’m not real good with the inner workings of an automatic. I do not think it’s engine related. I’m kind of leaning towards replacing the valve body but as you can see by me posting this for help, I’m not real sure. Planning on a transmission flush before winter gets here.
I’ve also read online about bad 02 sensors causing this but never throw a code, as well as a bad MAF, coolant temp sensor, torque converter lockup solenoid, etc. But a few things lean me away from those. 1) The mileage/year 2) How infrequent the problem is. 3) The computer read out (unless a sensor is sending bad info, but how can you tell? Just change it?)
Thanks for sticking through a long read. Anyone have any ideas or further testing I can do?
2006 Forester
N/A (Not Turbo)
Automatic
26,000 Miles
Drive By Wire
NO CHECK ENGINE LIGHT
Never been in any accidents
Never had any major work (pretty much just oil changes)
Problem:
The car will die when you come to a complete stop. It is very infrequent. Sometimes it’ll do it 4 times in a row. Sometimes it’ll go a few days without stalling. But on average I’d say every 1 in 10 stops it’ll stall out.
Stalling:
You don’t even realize the engine turned off. There is no shudder, no bouncing idle, nothing. The needle just continues it decent down the tach until it touches the bottom peg. It starts right back up though.
Conditions:
Have no effect. The engine can be cold or hot. Outside temp doesn’t matter either (40’s to 70’s). Has done it after backing out of the garage as well as coming to a stop light after a 50 mile commute. You can come to a quick stop or a slow one (not idle slow of course). When left in Neutral it has never stalled.
Tests:
Took it to the dealership and they cleaned the fuel system/throttle body. That didn’t work so they said nothings wrong with it and therefore, nothing they can do to fix it. I’ve plugged in my computer and read O2, RPM’s, fuel pressure, throttle position, coolant temp, intake temp, etc. and I’m not an expert on what I should be seeing but everything appears to be functioning as it should.
Vehicle Condition:
Very well taken care of. Low mileage. Apart from stalling the car runs like it’s new. No engine bogging or rough shifts.
I personally think it’s something with the transmission, not sure what. Could be something sticking, some debris stuck, or a sensor/solenoid going out. I dunno, I’m not real good with the inner workings of an automatic. I do not think it’s engine related. I’m kind of leaning towards replacing the valve body but as you can see by me posting this for help, I’m not real sure. Planning on a transmission flush before winter gets here.
I’ve also read online about bad 02 sensors causing this but never throw a code, as well as a bad MAF, coolant temp sensor, torque converter lockup solenoid, etc. But a few things lean me away from those. 1) The mileage/year 2) How infrequent the problem is. 3) The computer read out (unless a sensor is sending bad info, but how can you tell? Just change it?)
Thanks for sticking through a long read. Anyone have any ideas or further testing I can do?