Low/variable Idle on 2000 FRC
Thread Starter
4th Gear
Joined: Aug 2009
Posts: 4
Likes: 0
From: Grapevine Texas
Low/variable Idle on 2000 FRC
Hey all.....
Im a newbie, but Ive been lurking for awhile. Ive tried to find posts with similar issues with no luck. So here goes.
After playing Captain Obvious, looking for loose/unplugged items and coming up empty Im here to ask what could be causing my idle to drop to 500rpm then back up to the normal 850rmp(if thats normal)? The issue is masked somewhat when the a/c is on because idle goes up when its on. But, if the a/c is on and I rev it up to 2500rpm, it drops down to 500rpm or so, is really rough and sometimes dies. I never have an issue restarting it, its just the idle.
I just replaced the plugs and it made no difference. Old plugs looked normal.
My DIC codes are as follows:
28-TCS C1255H (EBTCM Internal Malfunction)
AO-LDCM B2284H (Battery#2 Fault)
BO-RFA U1064H, U1096H, U1016H, C2120H (Wheel Sensors)
Any help is greatly appreciated!
Im a newbie, but Ive been lurking for awhile. Ive tried to find posts with similar issues with no luck. So here goes.
After playing Captain Obvious, looking for loose/unplugged items and coming up empty Im here to ask what could be causing my idle to drop to 500rpm then back up to the normal 850rmp(if thats normal)? The issue is masked somewhat when the a/c is on because idle goes up when its on. But, if the a/c is on and I rev it up to 2500rpm, it drops down to 500rpm or so, is really rough and sometimes dies. I never have an issue restarting it, its just the idle.
I just replaced the plugs and it made no difference. Old plugs looked normal.
My DIC codes are as follows:
28-TCS C1255H (EBTCM Internal Malfunction)
AO-LDCM B2284H (Battery#2 Fault)
BO-RFA U1064H, U1096H, U1016H, C2120H (Wheel Sensors)
Any help is greatly appreciated!
Last edited by slyq757; Aug 17, 2009 at 04:29 PM. Reason: forgot codes
Tech Contributor
Joined: Jan 2007
Posts: 19,292
Likes: 1,109
From: Dyer, IN
Hey all.....
Im a newbie, but Ive been lurking for awhile. Ive tried to find posts with similar issues with no luck. So here goes.
After playing Captain Obvious, looking for loose/unplugged items and coming up empty Im here to ask what could be causing my idle to drop to 500rpm then back up to the normal 850rmp(if thats normal)? The issue is masked somewhat when the a/c is on because idle goes up when its on. But, if the a/c is on and I rev it up to 2500rpm, it drops down to 500rpm or so, is really rough and sometimes dies. I never have an issue restarting it, its just the idle.
I just replaced the plugs and it made no difference. Old plugs looked normal.
My DIC codes are as follows:
28-TCS C1255H (EBTCM Internal Malfunction)
AO-LDCM B2284H (Battery#2 Fault)
BO-RFA U1064H, U1096H, U1016H, C2120H (Wheel Sensors)
Any help is greatly appreciated!
Im a newbie, but Ive been lurking for awhile. Ive tried to find posts with similar issues with no luck. So here goes.
After playing Captain Obvious, looking for loose/unplugged items and coming up empty Im here to ask what could be causing my idle to drop to 500rpm then back up to the normal 850rmp(if thats normal)? The issue is masked somewhat when the a/c is on because idle goes up when its on. But, if the a/c is on and I rev it up to 2500rpm, it drops down to 500rpm or so, is really rough and sometimes dies. I never have an issue restarting it, its just the idle.
I just replaced the plugs and it made no difference. Old plugs looked normal.
My DIC codes are as follows:
28-TCS C1255H (EBTCM Internal Malfunction)
AO-LDCM B2284H (Battery#2 Fault)
BO-RFA U1064H, U1096H, U1016H, C2120H (Wheel Sensors)
Any help is greatly appreciated!
Thread Starter
4th Gear
Joined: Aug 2009
Posts: 4
Likes: 0
From: Grapevine Texas
Im looking, but not finding anything........ I did repair/replace broken vacuum lines under the battery that fixed my hvac issue, but not the idle.
I have also have a missing 2 pin connector that can be seen best when looking in between the hood and front bumper with the hood open on the passenger side of the car. It is about a foot inside of the passenger headlight. The female end is secured to the car but the male end is nowhere to be found....... What is it?
I have also have a missing 2 pin connector that can be seen best when looking in between the hood and front bumper with the hood open on the passenger side of the car. It is about a foot inside of the passenger headlight. The female end is secured to the car but the male end is nowhere to be found....... What is it?
Advanced
Joined: Mar 2009
Posts: 76
Likes: 0
From: LEBANON ME
had the same problem with my 99 checked everything could not find the problem did the idle relearn still had the problem. Took it to chuck cow for a tune he did a great job no more problem. car runs faster with great idle. might want to look at your tune
Tech Contributor
Joined: Jan 2007
Posts: 19,292
Likes: 1,109
From: Dyer, IN
Im looking, but not finding anything........ I did repair/replace broken vacuum lines under the battery that fixed my hvac issue, but not the idle.
I have also have a missing 2 pin connector that can be seen best when looking in between the hood and front bumper with the hood open on the passenger side of the car. It is about a foot inside of the passenger headlight. The female end is secured to the car but the male end is nowhere to be found....... What is it?
I have also have a missing 2 pin connector that can be seen best when looking in between the hood and front bumper with the hood open on the passenger side of the car. It is about a foot inside of the passenger headlight. The female end is secured to the car but the male end is nowhere to be found....... What is it?
