HSV 671
New Member
- Joined
- Jan 3, 2013
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- 213
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- Location
- qld
- Members Ride
- 04 VY CLUBSPORT MM6
Hi all.
Can anyone help me in diagnosing a possible tps problem on my LS1 clubby. It has been ongoing and I've put up with it for 12 month's +. The issue is that it throws a "Trac Off" light and starts at 2000 rpm then decreases to hold idle @ 1500 rpm. Mech has replaced the iac and still has same problem. He has reset the iac and still same problem. I have replaced the tps which fixed the "TRAC OFF" issue for now but still will high idle but with no Trac problem. Today I have disconnected the tps and all issues are gone ( pcm throws Trac off light cause of no sensor connected, but idle is @ 850-normal with it disconnected). It starts at 1000 rpm and idles back and holds @ 850 rpm and car is fine, still disconnected, however, with it disconnected again, when under hard acceleration it will ping on Ron98 whereas it never before with it connected. So has this new eBay sensor gone bad within 2 month's? Or can it be a wiring issue in the tps loom, or even pcm which could be loosing memory. Mech seems to think there is a bad earth somewhere. Also I have followed the workshop manual in resetting the iac, and to reset the pcm which is to pull the fuse, turn ignition on (but not start.... 3 beeps), turn off, Relpace fuse, start car.......did not do anything to fix issue with sensor connected. T Y for your time.
Can anyone help me in diagnosing a possible tps problem on my LS1 clubby. It has been ongoing and I've put up with it for 12 month's +. The issue is that it throws a "Trac Off" light and starts at 2000 rpm then decreases to hold idle @ 1500 rpm. Mech has replaced the iac and still has same problem. He has reset the iac and still same problem. I have replaced the tps which fixed the "TRAC OFF" issue for now but still will high idle but with no Trac problem. Today I have disconnected the tps and all issues are gone ( pcm throws Trac off light cause of no sensor connected, but idle is @ 850-normal with it disconnected). It starts at 1000 rpm and idles back and holds @ 850 rpm and car is fine, still disconnected, however, with it disconnected again, when under hard acceleration it will ping on Ron98 whereas it never before with it connected. So has this new eBay sensor gone bad within 2 month's? Or can it be a wiring issue in the tps loom, or even pcm which could be loosing memory. Mech seems to think there is a bad earth somewhere. Also I have followed the workshop manual in resetting the iac, and to reset the pcm which is to pull the fuse, turn ignition on (but not start.... 3 beeps), turn off, Relpace fuse, start car.......did not do anything to fix issue with sensor connected. T Y for your time.