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Dean1985
Guest
Hey guys.
I have used the good old search function, gone through 5 pages of posts (165 results) and cant really see anyone with an answer to an issue im having.
I have had a recurring code 22. TPS return voltage low.
I have a healthy 5v reference voltage, i have tested the retyrn voltage back to the ecu which is between .4 of a volt at butterfly idle. The voltage gently increases back to 4.2v or a little more at full throttle with no spikes etc.
After a drive (maybe 5 minutes or more) the engine light will come on and the PCM will later report code 22 again.
I have replaced the TPS. Borrowed a throttle body with sensors in it as well. Tested all 3 TPS which were all within spec. But after the specified driving time... bad shifting, loss of gears. Engine light.
My brirher is a mech so we have also had it on the snap-on scan tool running through fault finding steps and evwrything check out.
Until, it throws the code. When the code is present we test the TPS and the voltage doesnt increase until just under 50% throttle.
The wiring harness has been stripped back to where it meets the guard to check for wiring issues. To no avail.
I had an earth issue at the passenger head earth which i moved and fixed.
I have good earth from battery to guard. Engine to battery, engine to body. The one near the oil pressure switch looks a bit shitty but i doubt itd be an issue.
Any thoughts?
Cheers in advance
I have used the good old search function, gone through 5 pages of posts (165 results) and cant really see anyone with an answer to an issue im having.
I have had a recurring code 22. TPS return voltage low.
I have a healthy 5v reference voltage, i have tested the retyrn voltage back to the ecu which is between .4 of a volt at butterfly idle. The voltage gently increases back to 4.2v or a little more at full throttle with no spikes etc.
After a drive (maybe 5 minutes or more) the engine light will come on and the PCM will later report code 22 again.
I have replaced the TPS. Borrowed a throttle body with sensors in it as well. Tested all 3 TPS which were all within spec. But after the specified driving time... bad shifting, loss of gears. Engine light.
My brirher is a mech so we have also had it on the snap-on scan tool running through fault finding steps and evwrything check out.
Until, it throws the code. When the code is present we test the TPS and the voltage doesnt increase until just under 50% throttle.
The wiring harness has been stripped back to where it meets the guard to check for wiring issues. To no avail.
I had an earth issue at the passenger head earth which i moved and fixed.
I have good earth from battery to guard. Engine to battery, engine to body. The one near the oil pressure switch looks a bit shitty but i doubt itd be an issue.
Any thoughts?
Cheers in advance
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