OK I installed a new temp sensor, no difference. But then a strange thing happened. I was putting a new air filter in and disconnected the MAF sensor. I forgot to hook it up and when I went to start the hot engine it started on first try. I then noticed I had forgotten to hook up the MAF sensor and ...

1996 Volvo 850 GLT: The car starts fine when cold. Turn the key and wallam starts and runs at idle just fine. After running for 5 minutes and turning off, then restart is a different story. It will run 5 seconds and die. This will continue for many times. I get tired of it, and hold the gas pedal do...

Thanks Lee,

I have tried the grounding of the 2 wires y & w/y and they both turn on the fan. I tested with key off, engine cold. Where else could the problem be?
Don

1996 Volvo 850 GLT relay cooling fan2-spd 1398845 How would you test this relay? The car overheats at idle/ Fan does not come on. I have tested the fan and both speeds work. The red single wire carries battery voltage. Do the 2 pins/wires (yellow and White/yellow) from the engine control module carr...

1996 volvo 850 GLT 20 valve:
What should be the voltage at the solenoid from the key circuit? Or what should the voltage be at the green wire that activates the solenoid?

This has been disappointing news. The reason I bought the Innova 3150b is that it is suggested by Mathews blog. I was hoping that the codes would help me solve the immobilazation features. I can jump the starter ( Won't start with key) but I have no spark.
Don

Replaced a engine in a 1996 Volvo 850 850 GLT wagon. No cranking with key and no spark. Bought Innova 3150b Dianostic tool but it doesn't read any codes. need expert tech.
Don

I just purchced the Innova 3150b and don't know how to program it for a Volvo 850. It doesn't read the codes from the vehical computer. Where do I start?
Don

The engine won't start with the key. in the Chilton book it showes from the key to a anti theft relay. Where is this relay located. What procedure would be needed to trace the starter circuit? 1996 850 volvo

Don