Hi, 2001 LC here with 173,000 miles, 100% stock.
We were driving along this evening in the family truckster, almost home, going up a slight incline, when the check-engine light came on. Accompanied by a "clunk" sound (just one). From there, the car could move a little, but not enough to get through an intersection at the top of the hill. So, we put it into reverse. That was accompanied by another, louder, clunk, and a bit of a lurch backwards. From there,the car could shift into any gear (P, R, N, D, 2, L) but each shift was accompanied by another somewhat forceful clunk and a little bit of a lurch. The car could move forward or backward as needed, but with very little power. Kind of like if you were to try to go around in "Drive" but without applying any throttle.
I tried reversing up the hill and through the intersection (I know, I know, but this is a quiet area with nobody around)... again, not enough power to make it all the way through that steepest part of the hill right before our house.
Throughout this time, the engine was idling high, about 1500 RPM.
At this point, I backed down the hill, put it in Park and turned off the ignition. Waited a second, started it back up... and everything was fine. Drove back home without incident.
Went straight to the OBD2, which yielded a "p1121" fault code (APPS).
I used the OBD to clear the check engine light. It did not come back on.
I have put the car in and out of gear (drive and reverse) and puttered around in the driveway. Everything "seems" fine at the moment. But have not had the courage to drive it on the street. For that, I'll wait until daylight tomorrow at the earliest.
Maybe I should mention here that for the last few years there has been a very slight clunk when shifting from any gear into Reverse. We never did anything about it, but maybe we should have.
***EDIT July 10: I really appreciate the replies thus far. Upon further research, the APPS issue that I got from my OBD2 sensor definitely appears to be what is going on here.
At this point, I'm looking to get the replacement part (22060-50011) and am hoping not to pay retail (starting at $300+)... the only other alternatives I've seen so far, on eBay, seemed a little sketchy in terms of overseas shipping and whatnot.
Lastly, if anyone knows of any step-by-step installation photos that would be great! The three photos on this thread An illustrated guide to replacing your APPS - Part 1 are good but the 11-year-old link to the Picasa page with the rest of the photos is now dead. I have looked under the hood of our LC and I'm somewhat confident that I could install the new APPS without the rest of the photos... but I would feel a lot better if I could find those additional pics.
Thanks again...
We were driving along this evening in the family truckster, almost home, going up a slight incline, when the check-engine light came on. Accompanied by a "clunk" sound (just one). From there, the car could move a little, but not enough to get through an intersection at the top of the hill. So, we put it into reverse. That was accompanied by another, louder, clunk, and a bit of a lurch backwards. From there,the car could shift into any gear (P, R, N, D, 2, L) but each shift was accompanied by another somewhat forceful clunk and a little bit of a lurch. The car could move forward or backward as needed, but with very little power. Kind of like if you were to try to go around in "Drive" but without applying any throttle.
I tried reversing up the hill and through the intersection (I know, I know, but this is a quiet area with nobody around)... again, not enough power to make it all the way through that steepest part of the hill right before our house.
Throughout this time, the engine was idling high, about 1500 RPM.
At this point, I backed down the hill, put it in Park and turned off the ignition. Waited a second, started it back up... and everything was fine. Drove back home without incident.
Went straight to the OBD2, which yielded a "p1121" fault code (APPS).
I used the OBD to clear the check engine light. It did not come back on.
I have put the car in and out of gear (drive and reverse) and puttered around in the driveway. Everything "seems" fine at the moment. But have not had the courage to drive it on the street. For that, I'll wait until daylight tomorrow at the earliest.
Maybe I should mention here that for the last few years there has been a very slight clunk when shifting from any gear into Reverse. We never did anything about it, but maybe we should have.
***EDIT July 10: I really appreciate the replies thus far. Upon further research, the APPS issue that I got from my OBD2 sensor definitely appears to be what is going on here.
At this point, I'm looking to get the replacement part (22060-50011) and am hoping not to pay retail (starting at $300+)... the only other alternatives I've seen so far, on eBay, seemed a little sketchy in terms of overseas shipping and whatnot.
Lastly, if anyone knows of any step-by-step installation photos that would be great! The three photos on this thread An illustrated guide to replacing your APPS - Part 1 are good but the 11-year-old link to the Picasa page with the rest of the photos is now dead. I have looked under the hood of our LC and I'm somewhat confident that I could install the new APPS without the rest of the photos... but I would feel a lot better if I could find those additional pics.
Thanks again...
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