What would you expect to happen if your throttle position sensor was broken/faulty?
High idle RPM even when idle control is all the way in? loss of power? Searching Revs? Sort of like an auto when its coldish and even a little when its warm in the fact that you let the clutch out and it accelerates by itself with ur foot completely off the accelerator...
Curious as my car is exhibiting all tehse symptoms and its been suggested to me it may be the TPS....its a Starlet GT btw..thanks
Faulty throttle position sensor symptoms
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Faulty throttle position sensor symptoms
by FrEsH » Thu Nov 02, 2006 6:40 pm
Last edited by FrEsH on Thu Nov 02, 2006 6:52 pm, edited 1 time in total.
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FrEsH - Toyspeed Member
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by Lloyd » Thu Nov 02, 2006 6:50 pm
Usually if its adjusted wrong it'll be horrible on very lgiht throttle, quite jerky. Check its getting a good 5V power supply, good earth and the voltage on the signal wiring is changing as you open and close the throttle (key on, engine off) and also check for fault codes. Could be AFM/MAP sensor fault too. Check codes first though
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Lloyd - ** Moderator **
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by FrEsH » Thu Nov 02, 2006 6:53 pm
yea when its cold its hellla jerky at low rpm...really bad u take ur foot off the accelerator and its like bunny hopping almost...i know how to check for codes by bridging the thingy but i dont know how to read them... does a light flash on ur dash or something and you count the flashes?
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FrEsH - Toyspeed Member
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by l1ttle_d3vil » Thu Nov 02, 2006 9:09 pm
yeah you count the flashes on the dash, do a search on google theres quite a few websites that explain how to read the codes and what they translate into.
those problems could point to a faulty TPS, it would be a lot of other things though but thats where i'd be looking first.
those problems could point to a faulty TPS, it would be a lot of other things though but thats where i'd be looking first.
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l1ttle_d3vil - Toyspeed Member
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by NA Drifter » Thu Nov 02, 2006 10:22 pm
yeah faulty TPS sux! Happened to my ae86 before and the car is soooo gutless.. Also with faulty TPS, you are very likely not able to get real reading on your timing.. they will be like 30+ something.. instate of around 16... without shorting out the pins.
Keith
http://toyspeed.blakjak.net/profiles/profile.php?id=404
Austin Mini with 1275,TT140 Corona GT-TR with 3TGTEU, TE71 GT Levin with 2TGEU, AE86 Trueno 4AGE, AE85 Trueno 3A, Hilux Surf with 2JZGEU
http://toyspeed.blakjak.net/profiles/profile.php?id=404
Austin Mini with 1275,TT140 Corona GT-TR with 3TGTEU, TE71 GT Levin with 2TGEU, AE86 Trueno 4AGE, AE85 Trueno 3A, Hilux Surf with 2JZGEU
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NA Drifter - Toyspeed Member
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by ~SlideWays~ » Fri Nov 03, 2006 8:56 am
Hmmm both my gf's 20v and my brothers gt starlet have the same symptoms!
I've tried leads and plugs, but still to try coil and tps or even distributor.
I've tried leads and plugs, but still to try coil and tps or even distributor.
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~SlideWays~ - Toyspeed Member
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by ~SlideWays~ » Fri Nov 03, 2006 1:27 pm
FrEsH wrote:i'll try cahnging the TPS and let you know how i get on
That'd be awesome, cheers
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~SlideWays~ - Toyspeed Member
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