Hi Everyone,
To start, I just bought a 2001 GTi VR6 12V Golf for $600 and was told it runs real rough because the coolant mixture was not correct and it froze. I was able to start and drive the car, it seemed to idle ok but would bog and stall during take-off and acceleration. Checked compression (but the car wasn't warm, just in garage) where I found cyl 3 and 4 (front and rear middle cylinders) to be at 60psi where the others were around 145. Also, exhaust smoke is coming in through vents. Here are the codes recorded:
P1151- Lack of Upstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank No. 2
P0506- Idle Air Control System RPM Lower Than Expected
P0300- Random/Multiple Cylinder Misfire Detected
P0303- Cylinder 3 Misfire Detected
P0304- Cylinder 4 Misfire Detected
P1296- No 5 Volts To MAP Sensor
P0606- ECM/PCM Processor
I do not have a VAG-COM and the car is on stands and engine is pretty naked, so this is what I have to work with.
I've taken the intake manifold along with injectors and such, valve cover and side timing chain cover off. Found a broken timing chain guide rail. To the best of my diagnostic abilities go, I believe the head gasket developed a leak near cyl 3 and 4 (thus their shared psi of 60).
Any additional insight would be greatly appreciated, and I will continue to take the head off once I feel it is necessary.
Thanks in advance for any help,
Kris
To start, I just bought a 2001 GTi VR6 12V Golf for $600 and was told it runs real rough because the coolant mixture was not correct and it froze. I was able to start and drive the car, it seemed to idle ok but would bog and stall during take-off and acceleration. Checked compression (but the car wasn't warm, just in garage) where I found cyl 3 and 4 (front and rear middle cylinders) to be at 60psi where the others were around 145. Also, exhaust smoke is coming in through vents. Here are the codes recorded:
P1151- Lack of Upstream Heated Oxygen Sensor Switch – Sensor Indicates Lean – Bank No. 2
P0506- Idle Air Control System RPM Lower Than Expected
P0300- Random/Multiple Cylinder Misfire Detected
P0303- Cylinder 3 Misfire Detected
P0304- Cylinder 4 Misfire Detected
P1296- No 5 Volts To MAP Sensor
P0606- ECM/PCM Processor
I do not have a VAG-COM and the car is on stands and engine is pretty naked, so this is what I have to work with.
I've taken the intake manifold along with injectors and such, valve cover and side timing chain cover off. Found a broken timing chain guide rail. To the best of my diagnostic abilities go, I believe the head gasket developed a leak near cyl 3 and 4 (thus their shared psi of 60).
Any additional insight would be greatly appreciated, and I will continue to take the head off once I feel it is necessary.
Thanks in advance for any help,
Kris