Jaguar XK8 Fail Safe P0121 Code Intermittent How I Repaired It

Описание: In this video I have a Jaguar XK8 that intermittently will go into fail-safe mode. This usually happens when i hit a bump and also usually when I am in heavy traffic and in a situation where I could be killed when the fail-safe comes on because I loose power and have to get out of the way of other vehicles which sometimes can be very dangerous. Anyway Mine had a P0121 code which relates to the Throttle Position Sensor. I had done a lot of research trying to figure out what to do and found a lot of information saying I needed to clean the Throttle position sensor plug connectors they were not made from tin and the sensor tabs were Gold and they would corrode and cause this issue. I tried to clean them seemed to work for a while but would come back. I decided I would buy a TP sensor so I looked for one on eBay. Then I noticed a company that was in my state but about 5 hours away that claims they can rebuild these things. I priced a throttle body which is supposed to be the only way you can get the TP sensor from Jaguar it was 2000.00. So that was a no go. I was actually looking for a used throttle body and ran across Automotive Scientific. The eBay listing says they can rebuild throttle bodies and they had good feedback so I called them because I skeptical. I asked if they were really successful repairing these for Jaguars they stated they were. I then went to eBay and purchased the Throttle Body rebuild even though the numbers on my Throttle body didn't match. I called them because they didm;t match they said they couldn't put all of the numbers on so if mine was close they could do it. I removed the throttle body and shipped it. They said 2-3 days It took 13 days from the ship date to the received date. They offered TP sensors only but I thought that I might have a pedal position sensor issue as well and they would calibrate them so I sent the Throttle body to them. I received it back and put it on and the car high idled bad. I checked the normal things to make sure i didn't have a vacuum leak and I didn't so I called. They insisted that the gasket needed to be replaced to which I said you should have sent one if it had to be replaced because it is metal I had no reason to think it needed replacement. Anyway I tested the gasket and it was sealed so that was not what was wrong nice try though!! I talked to Will he said it is easy to adjust just go as far left as you can and it will work. I then asked why they didn't calibrate it and he said they would set it back to where it was before. I thought I should have just got the Tp Sensor and installed it myself. I adjusted it far left and now the car idled at 4800 Rpm's so I adjusted to far right now it idled too low and had a Fail-safe code. So I adjusted the TP Sensor with the engine running by sound then I did a hard reset by unhooking the battery ground for a minute. This is the short version I adjusted it many times to get it right but finally by sound it worked out and runs better than it ever has since I bought it 5 years ago. Hope this helps Fellow Jaguar XK8 owners.