Josh Wiggill
Member
Hi guys,
I have a 1999 4.6 Thor V8 on which I replaced the original BOSCH TPS with a £25 variant from JGS 4x4 when hunting down a problems I had which is now finally fixed, it wasn’t the TPS at fault. However, now the car seems to judder and almost loose power momentarily while accelerating. When the TPS is disconnected it doesn’t do this. I noticed on live data when idling the Throttle angle will erratically jump about and do strange things. It will read 0% and then spoke to 72% and then drop to 27% so on and so on. Is this down to the aftermarket cheap TPS I replaced the original with. Annoyingly I didn’t keep the old one so I can hook that one back on and see if it still does it. I have reset adaptions and it still does it with the TPS plugged in.
It also revs up high on start up and sits at around 2,500 revs until I rev it and it drops back down. Could that also be linked with this or is that more likely to be a sticking IAC valve??
I have a 1999 4.6 Thor V8 on which I replaced the original BOSCH TPS with a £25 variant from JGS 4x4 when hunting down a problems I had which is now finally fixed, it wasn’t the TPS at fault. However, now the car seems to judder and almost loose power momentarily while accelerating. When the TPS is disconnected it doesn’t do this. I noticed on live data when idling the Throttle angle will erratically jump about and do strange things. It will read 0% and then spoke to 72% and then drop to 27% so on and so on. Is this down to the aftermarket cheap TPS I replaced the original with. Annoyingly I didn’t keep the old one so I can hook that one back on and see if it still does it. I have reset adaptions and it still does it with the TPS plugged in.
It also revs up high on start up and sits at around 2,500 revs until I rev it and it drops back down. Could that also be linked with this or is that more likely to be a sticking IAC valve??
