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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    ***UPDATE July 16: Thanks again to everyone who replied. To date, I have: 1) Cleaned out the throttle body, 2) Cleaned the MAF sensor, and 3) Put a dab of dielectric grease in the APPS electrical clip. No recurrence of the APPS issue so far. We'll see what happens!
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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    Yeah, I noticed that too last night. It does seem like a good option, especially if the throttle body has potential to be an easy DIY installation. Do you happen to know if that's the case? I've had trouble finding any info on self-installing a whole new throttle body.
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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    ***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...
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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    Thank you for responding... In my research this evening I've seen some info about a loose connection in the APPS being a potential culprit. I'll try to look further into that possibility tomorrow.
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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    Thanks again for your time and responses. The more I read about the APPS, it all seems to check out with what happened this evening. As for the hill we were driving on, it's a gentle incline for quite a while and then really steep for a very short distance (like 50 feet), and then goes back to...
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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    Thank you for your reply! I think it did not idle freely, but am not 100% sure. Transmission fluid seemed OK, but am not sure about the transfer case fluid. I'll have to check that tomorrow. Note: To be honest, I'm not very knowledgeable about cars. Yes, I discovered the thread that you linked...
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    Apparent APPS issue... P1121 code... now looking for replacement part and install photos

    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...
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