UPDATE:

I replaced the Cruise Control relay with one I salvaged a few years ago. So FAR it seems to be working correctly now. Still more tests in the works but no surging so far.

Hi all, having problems in cruise control mode. 1996 Volvo 850 Turbo Wagon - Automatic - Engine Type 57 - 2.3 L - 127,000 miles Lately with Cruise Control I am getting an RPM surge between 300 and 500+ RPM at random times even when the CC switch is ON and NOT engaged. Getting surges when running und...

Is there a preferred position to leave the flaps, perhaps both mid and floor distribution, thst would prevent the foam from sticking and causing this problem ? Hi abscate, I thought about this and a possible solution/fix? If you ever turn the heat up on your controls into the red where it is maximu...

Thank you for the writeup. Photos would have been a bonus, but below freezing are not the conditions to grab a phone with frozen fingers while trying to restore heating. I think deteriorating foam around the flaps and too little usage are the combination to get the flaps stuck. These are the proble...

Hi All, 1996 Volvo 850 Turbo Wagon - ECC type electronic heating cooling system. Not sure if the same on the manual type controls. I know this is a really old thread but I thought I might offer some options on stuck flapper doors on the floor and defrost flaps being stuck in the down position with n...

Vacuum lines, oxygen sensor wiring... It may be rear O2 sensor, but if you're going to delay the Parts Canon as long as possible, check that stuff first. Does your MPG suffer? Some threads that might not help, but also might: https://www.matthewsvolvosite.com/forums/viewtopic.php?p=222903 https://w...

were these generic O2 Sensors or ones specific for the 850 Turbo? I only put in the upstream one. It is a Bosch and the numbers matched up for my Volvo. That said it had been sitting around for a couple three years . I bought it at a good price at the time. Even before I had this sensor installed I...

Looks like you did alot of what could be causing this. Even though this isn't really a fix, if you add one of these O2 sensor adapters you pull the O2 Sensors out of the exhaus a bit and the codes should be gone. not a fix for the issue, but a fix if you need the light gone for inspection. Hi, Than...

Hi all, Need some help determining how to diagnose some codes I am pulling. It has been going on for a couple of years now. Intermittent Check Engine codes P0137 and P0131. 1996 Volvo 850 Turbo wagon VIN: YV1LW5720T2247599 Engine Type: 57 - 2.3L 5 cylinder Front wheel drive Mileage: 205 K Pulled thi...

Hi,
I have a 96 Volvo 850 Turbo Wagon. The outer CV boots are bad/torn, inners are fine. No problem so far with CV clicking or needing replacement.

Is there a tutorial for just replacing the rubber boot without pulling the axles? Any help would be greatly appreciated.

Thanks in advance,

Clark