Same relay on a 96 850? The search result is a bit voluminous...

Similar symptoms... (96 850) additional material: CEL comes on when going over a bump. Hit dash, light goes out. Tested ignition switch with light and seems to be ok. Power goes where it is supposed to. Speedo erratic. Am considering replacing speedo. Have access to a parts car. Have not run current...

4525 Take the whole car if you want the radio. You could use the grey hair.

Here it is. Fuel pump relay.

My MAF did not solve.
Turned out to be fuel pump relay.
Search site for details.

Car runs better with a warm up in temp. My guy was going to do some diagnostic checking for me... 1 hour limit. Replaced rpm sensor. Seemed better, than crapped out after 20 miles. Car starts, runs for anywhere from 20 to 120 seconds and then just dies. He is leaning towards fuel pump relay. Makes s...

Did you replace the RPM sensor? My daughter's car has a similar symptom. https://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=18855 My mech read code for me and there were mis fires and crank.rpm sensor codes. By the way disconnecting MAF sensor seemed to work, but it was temorary insani...

Thank you for the educated responses.
Saves me a fortune and maintains peace of mind.
Happy Holidays,
Henry

Got a great deal on some Hakka snows (just got 1 1/2 ft snow here in VT).
They are 185/65.
Any one think of any issues using the slightly lower (than stock 195) profile tires?
Daily driver. 15- 20 miles/day. Very little highway speeds.
Thanks,
Henry

The head is cooked on the 200K plus '96 850. Getting a new (used with 125 K) long block and am looking for tips on what to replace/upgrade while doing this. Planning timing belt replacement (is that somewhere in the database?) and water pump. The car was running with all of its components and (hopef...