850 95 cruise control mystery

salts850 · Post by **salts850** » 20 Oct 2009, 00:31

Cruise control would work fine, but once i used my knee to steer it cut out. Whenever pressure was applied upward the cruise shut down. It's now totally inop and I get the "not enough speed' code. Inspected the entire steering column for chaffed and/or shorted wires. Even replaced the cc sw. I'm baffled. Has anyone run into this problem? Help please, my car is falling apart fast!

jonofmac · Post by **jonofmac** » 20 Oct 2009, 05:25

Check the switch right above the break pedal. I had the exact same problem with the not enough speed code. There's a switch above the brake that comes out and the break presses on it. Basically you have to adjust the switch. There's a slider thing in the switch, pull that out so that it is always making contact with the brakes.

If you need more help, I can post a diagram if you'd like

jonofmac · Post by **jonofmac** » 20 Oct 2009, 05:33

Ah i'll just upload it. THere's a switch/valve for the clutch and a switch for the brake. So, if you have an automatic, you obviously won't have a clutch. But here's what it says in the manual.

"Brake & Clutch Valves
Valves are self-adjusting. If Manual adjustment is desired, depress pedal until pedal arm does not make contact with the valve. Pull out plunger (on the valve) as far as possible and release pedal slowly. Plastic catches in the valves will hold piston in correct position."

I'm 90% sure this is your problem. I had this exact problem and readjusting my valve/switch fixed it. Be careful not to pull up on your brakes though, or you'll have to do this again.

salts850 · Post by **salts850** » 20 Oct 2009, 08:56

ok, sounds great.I'm going to try and get to it today.I Know exactly what your talking about and I also hope this is the fix. Thanks! btw...Pics where great too.

salts850 · Post by **salts850** » 21 Oct 2009, 21:43

Ok, I located and adjusted the cc sw on the brake pedal. However it didn't make a bit of difference. I'm only getting code 122 to low of speed/ no speed input. I know it's a normal code, but there are no other codes. I did just notice that my cc light in my ipc is no present. Would this cause it not to work?

Post by **Ozark Lee** » 22 Oct 2009, 10:02

If you have not yet downloaded the manual you need to do so from here:

https://www.matthewsvolvosite.com/downlo ... vo_850.zip

Once you unzip it see the file named Cruise Control System.pdf and see the parts about putting the system through the diagnostic mode tests. You can test each function individually and easily track down why it isn't working.

...Lee

salts850 · Post by **salts850** » 22 Oct 2009, 11:08

wow, thanks lee. I'm impressed with all the information that contains. I will be reading many of these. Thank you again, i can't stess it enough.

salts850 · Post by **salts850** » 27 Oct 2009, 22:10

OK, over the weekend I went through all the cc tests with response codes. Everything checked out ok. I was still baffled. I did adjust the screw on the gas pedal for the vacuum servo. I'm not 100 % sure this was the culperate, but the cruise works now and when i push up on the steering wheel with my knee it doesn't cut out. I did replaced my bcm a couple days before and the lights were off for abs. Over the weekend i went in and checked for codes to be cleared. No codes were present, so i'm not sure if that had anything to do with my cruise not working, but it works. I'm sorry i can't give the actual fix to my mystery.

Post by **Ozark Lee** » 28 Oct 2009, 19:25

Check the connector and the wires at the connector that go to the turn signal stalk. For whatever reason the wires must get stressed in some condition and they get to a "just barely making contact" state. I think MIJ had a similar problem and did some documentation in the repair database.

The holding up the steering column with your knee and it works part of the equation points me in that direction.

...Lee