CSThompsy12
NAXJA Forum User
- Location
- USA
Hello,
On my 98 XJ 4.0 I am having a TPS problem. I am getting a code for p0123 (High TPS voltage)
I have put a new TPS on it, but that did not fix it. I put my scanner on it, and I am getting about 60% TPS position with the throttle on the idle position. I am getting the same with the old TPS. I have a second good running '99 XJ and which I checked the TPS % in idle position, and it was around 16%.
I even took the TPS off the throttle body and turned it by hand and watched the scanner. The percentage in this test ranged from 53% ate idle up to 100% at WOT. Same with the old TPS. Smooth increase in % throughout the range.
I did verify that the throttle flap is moving correctly. Currently the XJ does not want to start consistently. If it does it will High idle at 2500 RPM or more.
I've been doing some reading, but wondering where to look next.
On my 98 XJ 4.0 I am having a TPS problem. I am getting a code for p0123 (High TPS voltage)
I have put a new TPS on it, but that did not fix it. I put my scanner on it, and I am getting about 60% TPS position with the throttle on the idle position. I am getting the same with the old TPS. I have a second good running '99 XJ and which I checked the TPS % in idle position, and it was around 16%.
I even took the TPS off the throttle body and turned it by hand and watched the scanner. The percentage in this test ranged from 53% ate idle up to 100% at WOT. Same with the old TPS. Smooth increase in % throughout the range.
I did verify that the throttle flap is moving correctly. Currently the XJ does not want to start consistently. If it does it will High idle at 2500 RPM or more.
I've been doing some reading, but wondering where to look next.