Hi all, I’m having an absolute nightmare of a time with my car at the moment.
Symptoms-
As soon as I start the car I get the “service vehicle soon” warning on the dash. The car seems to drive ok, maybe a bit sluggish, but nothing too noticeable. All is well until the car warms up to anything over 95 degrees and then the car begins to stumble and hesitate. Keep driving and the hesitations get so bad that the car starts to kangaroo and becomes undriveable to the point where you need to stop. The engine warning light then comes on and the “engine stabili trak” message appears on the dash and the car fuel system switches to open loop.
You don’t need to actually drive the car for any of the above to happen. By just starting the car and letting it idle for long enough to get the temp up to over 95 ish degrees, all the same symptoms will happen.
If you let the car cool down. It starts/drives fine again except from the “service vehicle now” message that appears every time you start the car. Then when the car heats up again the whole problem is repeated.
Code reader brings up P0300 random misfire when the engine warning like eventually comes on. No other codes.
Fuel trim seems to indicate that the car is running rich as the long term trim sits around -10%, but have seen it reach -16%
Things that have been changed
Coil pack (although not a Delphi as some recomend)
Spark plugs
Both o2 sensors
Had injectors out and they seem to open and close fine, so not leaking.
I was going to change the crankshaft sensor. I’ve read that it can start to fail when it heats up, but I can’t seem to find the sensor on the engine. Ive found the plug but it almost looks like wire disappears into the engine. If anyone has replaced one on an insignia some pointers would be appreciated.
Car has been pressure tested and was ok.
Sorry for the long post, but would be very great full for any advice you could give.
Dave
Symptoms-
As soon as I start the car I get the “service vehicle soon” warning on the dash. The car seems to drive ok, maybe a bit sluggish, but nothing too noticeable. All is well until the car warms up to anything over 95 degrees and then the car begins to stumble and hesitate. Keep driving and the hesitations get so bad that the car starts to kangaroo and becomes undriveable to the point where you need to stop. The engine warning light then comes on and the “engine stabili trak” message appears on the dash and the car fuel system switches to open loop.
You don’t need to actually drive the car for any of the above to happen. By just starting the car and letting it idle for long enough to get the temp up to over 95 ish degrees, all the same symptoms will happen.
If you let the car cool down. It starts/drives fine again except from the “service vehicle now” message that appears every time you start the car. Then when the car heats up again the whole problem is repeated.
Code reader brings up P0300 random misfire when the engine warning like eventually comes on. No other codes.
Fuel trim seems to indicate that the car is running rich as the long term trim sits around -10%, but have seen it reach -16%
Things that have been changed
Coil pack (although not a Delphi as some recomend)
Spark plugs
Both o2 sensors
Had injectors out and they seem to open and close fine, so not leaking.
I was going to change the crankshaft sensor. I’ve read that it can start to fail when it heats up, but I can’t seem to find the sensor on the engine. Ive found the plug but it almost looks like wire disappears into the engine. If anyone has replaced one on an insignia some pointers would be appreciated.
Car has been pressure tested and was ok.
Sorry for the long post, but would be very great full for any advice you could give.
Dave
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