Northstar Engines and System Technical Discussion Discussion, PCM P0741 Error Code / 2000RPM IDLE - 99 STS in Cadillac Engine Discussion; I drove about 100 miles this morning in the snow storm we're having here to Erie, PA from Cleveland, OH. ...
I drove about 100 miles this morning in the snow storm we're having here to Erie, PA from Cleveland, OH. While getting off the freeway I got stuck in some snow that hadn't been plowed on the off-ramp. I shifted into reverse to back out of it and then not realizing any of the tires were still spinning in the snow, I shifted into drive! The car jerked a little bit but seemed fine all the way up until I arrived at my destination.
A couple of a hours went by and I was ready to leave, went to the car, started it and noticed the 2000rpm idle. I tried to backup, needless to say, that did NOT work! The engine stalled out so I shifted into drive, it jerked a little and I drove 100 miles back home after I checked the oil and looked underneath the hood.
The car didn't overheat and it ran good on the freeway but I did notice that it seemed to get stuck in a higher gear a couple times when slowing down.
What could this problem possibly be? Could the PCM P0741 error code be related the high idle?
Sorry, I missed that. What that code means is that your TCC is stuck off. Was everything good until this happened? I wouldn't think what you did would ruin the transmission.
Try disconnecting the battery and resetting the entire car. That way any electrical fault will be resolved. If there's actually been damage done to the TCC, then you may need to have it looked at/replaced.
The car was running perfectly fine and I didn't notice anything strange until after I started my car to leave and drive back to Cleveland, that's when it I noticed it idle 2000+RPMs.
I cleared the codes, drove my car a few miles to Autozone and had them check the codes again, nothing popped up. I'm thinking the P0741 code popped up only once because of me shifting with such a high idle.
The guy at Autozone suggested it could be an "Idle Air Control Valve". I unplugged it just to see if there would be any changes, the car actually idled slower at about 1300-1400RPM. I plugged it back in and the car idles at 2000+RPM. I went ahead and unplugged it for the ride home, it actually seemed to run and idle normally in drive.
Could my problem be the Idle Air Control Valve? Unfortunately they didn't have any in stock.
Hmmmmmmmm.........While its "idling" at whatever rpm - disconnect the TPS and see what happens. Clean that connector, too. A faulty TPS will cause all sorts of rpm hiccups.
Check your throttle cable for kinks and binding: with engine and key OFF slowly and deliberately depress the accelerator pedal to the floor several times. Is there ANY stiffness or jerky movement ? That cable should feel smooth as velvet.