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moondog
03-22-2008, 04:32 PM
Ok Ladies and gentlemen, 1996 K1100RS, idles high. I just put it back together after a head gasket change. Throttle bodies were off (not disconnected from choke and throttle cable). I tried clearing faults and also turned the throttle slowly after disconnecting and reconnecting the battery (TPS). Throttle feels ok , doesn't feel or look stuck. Any ideas?
bmwmick
03-24-2008, 08:35 AM
Did you check the TPS voltage? Should be 0.375-0.385V with throttle closed, engine off, ignition on.

The 'open/close' 'learning' step doesn't apply to your bike, that procedure onlyh applies to the MA 2.4 bikes.
moondog
03-24-2008, 10:23 AM
Did you check the TPS voltage? Should be 0.375-0.385V with throttle closed, engine off, ignition on.

The 'open/close' 'learning' step doesn't apply to your bike, that procedure onlyh applies to the MA 2.4 bikes.

Well I tried that once, but I guess that doesn't work according to your info. I have also been try to check other items through the Motronic connector but the diagram
I got off the KOG site doesn't seem to line up with my connector. I also tried looking for faults and I ground the pin on the blue connector but I get no blinking water temp light.
pfls
03-24-2008, 11:47 AM
It's pretty easy to fold one or more of the throttle body manifolds under the throttle bodies on the back side when reinstalling them. This will cause a big vacuum leak and high idle condition.
SweetT
03-24-2008, 02:21 PM
Before you go hunting down electrons, check for a vacuum leak. that's the first thing I thought of when i read your post. You can spray WD40 around the throttle bodies to see if that changes the idle speed.
moondog
03-24-2008, 03:15 PM
I read something about a vacuum hose attached to the throttle body assembly. I don't recall pulling a vacuum hose. Of course its been two years since I took it apart. Is there one?
BuddingGeezer
03-24-2008, 07:00 PM
There is a vacuum port on each throttle body. The left 3 have a rubber cap on them. the one on the right has a vacuum hose that attaches to the fuel pressure regulator.

A leak on any or all of them can cause a high idle.

Ralph Sims
moondog
03-25-2008, 04:00 PM
All the caps are on and cables ok. Found the TPS way off.