Matt Sheldon
New member
- Joined
- Aug 14, 2015
Hi All,
First time poster here. I own a 91 940se wagon. Just had the heater core replaced by a well established (Seattle) Volvo mechanic. When I got the car back none of the dash lights were working as well as none of the dash warning lights. Took it back and they said they fixed it. Dash lights now working however I don't think any of the warning lights are working yet. They light up and go off when I start the car but I can't get the check engine light to come on due to a fault. I have disconnected the RPM sensor on the turbo inlet hose, MAF sensor, the O2 sensor and pulled a spark plug wire then started. None of these methods caused the Check Engine light to come on or stay on. My question is should any or all of these methods have caused the warning light to come on? They threw ODB codes (accept the O2 sensor for some weird reason). What's the best way to cause the Check Engine light to come on? I want to make sure I haven't missed anything before I take it back a 3rd time.
Thanks
Matt
First time poster here. I own a 91 940se wagon. Just had the heater core replaced by a well established (Seattle) Volvo mechanic. When I got the car back none of the dash lights were working as well as none of the dash warning lights. Took it back and they said they fixed it. Dash lights now working however I don't think any of the warning lights are working yet. They light up and go off when I start the car but I can't get the check engine light to come on due to a fault. I have disconnected the RPM sensor on the turbo inlet hose, MAF sensor, the O2 sensor and pulled a spark plug wire then started. None of these methods caused the Check Engine light to come on or stay on. My question is should any or all of these methods have caused the warning light to come on? They threw ODB codes (accept the O2 sensor for some weird reason). What's the best way to cause the Check Engine light to come on? I want to make sure I haven't missed anything before I take it back a 3rd time.
Thanks
Matt