restricted performance/failsafe problem now with OBD-II codes
#1
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#3
RE: restricted performance/failsafe problem now with OBD-II codes
You have a vacuum leak of some sort. The code reader you bought, does it just read codes, or can you look at some live data? If you can, look at the ltft and stft on both banks. Look at them at idle, then carefully under a heavy acceleration see what they read, may be better to have someone else drive.
On the R there are many places for the vacuum leak. Look at fuel trims first, then let us know. Also, clear the codes before checking that.
On the R there are many places for the vacuum leak. Look at fuel trims first, then let us know. Also, clear the codes before checking that.
#6
RE: restricted performance/failsafe problem now with OBD-II codes
ORIGINAL: FactoryJaguarTech
You have a vacuum leak of some sort. The code reader you bought, does it just read codes, or can you look at some live data? If you can, look at the ltft and stft on both banks. Look at them at idle, then carefully under a heavy acceleration see what they read, may be better to have someone else drive.
On the R there are many places for the vacuum leak. Look at fuel trims first, then let us know. Also, clear the codes before checking that.
You have a vacuum leak of some sort. The code reader you bought, does it just read codes, or can you look at some live data? If you can, look at the ltft and stft on both banks. Look at them at idle, then carefully under a heavy acceleration see what they read, may be better to have someone else drive.
On the R there are many places for the vacuum leak. Look at fuel trims first, then let us know. Also, clear the codes before checking that.
since I removed/reseated the throttle body/intake manifold junction earlier today, I haven't had the problem again, and I've driven probably twice as much as I had when it was cropping up earlier. that doesn't mean it's fixed of course... but it could have just been loose and letting air in. Should there be any grease on that seal? I assume not, looks like it just fits dry. I will talk to someone local and see if I can get them to read some data for me
thanks!
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#8
RE: restricted performance/failsafe problem now with OBD-II codes
got failsafe mode, code P0121
I saw there was someone else who had a similar problem which was the result of the metal in the TPS sensor pins being mismatched.. one side was gold and the other was tin.. not sure where that sensor is to check the pins
I saw there was someone else who had a similar problem which was the result of the metal in the TPS sensor pins being mismatched.. one side was gold and the other was tin.. not sure where that sensor is to check the pins
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