Hello, I have a 90 pontiac 6000LE 3.1 MPFI, I checked the voltage to my TPS and its reading 0.80 Volts at idle and 5.50 Volts at Wide open throttle.. Does this sound like a bad tps? I have been running extremely rich lately and losing alot of fuel ecomony along with pops out the exhaust with some fuel related smoke out the pipe. Curious if the TPS sounds like its bad
Thank you
2007-04-26 08:18:55 · 4 answers · asked by CitationOne 3 in Cars & Transportation ➔ Maintenance & Repairs
Every Sensor on the has been changed (O2,IAC Valve,Crank,EGR valve,Coolant Temp,Coil packs,Ignition module,Knock Sensor,Fuel pump,Plugs,Wires,White'ish smoke out exhaust but it is not head gasket related,Catalytic conv.Changed,Fuel Filter,Map Sensor) Also Fuel pressure Regulator has been checked and is fine at 38PSI.. I am stumped everything has been changed except TPS
2007-04-26 09:14:44 · update #1
Pull the vacuum hose off your fuel pressure regulator. If it has gas in it, the regulator is leaking and the manifold is sucking a ton of gas through the line. The TPS is fine.
2007-04-26 11:00:20 · answer #1 · answered by Nomadd 7 · 0⤊ 0⤋
TPS usually make your car idle uneven when they go bad. have you checked for a vacuum leak? also a bad fuel pressure regulator will give you poor gas milage. check wires and plugs and all three ignition coils for blue sparks not orange. you could use a fuel system cleaner too. dwhat color is the smoke? black is gas burning, white, is antifreeze burning. and blue is oil burning. check the pcv valve in back of the engine, the hose that slips over the valve , some times splits and causes a vacuum leak.
2007-04-26 16:03:19 · answer #2 · answered by rock 2 · 0⤊ 0⤋
I do not know the required readings for the TPS, but what you are describing sounds like dirty injectors.
Dirty injectors can be helped by a bottle of fuel injector cleaner fluid in the gas tank, but, since yours seem to be fairly bad already, use two bottles in a full tank and then run the tank level well down before filling it again.
2007-04-26 15:54:52 · answer #3 · answered by Ef Ervescence 6 · 0⤊ 0⤋
A tune up may help and maybe a fuel filter change.....but it coulf be an o2 sensor out and it is telling the computer that it is burning lean....thus usiong more fuel.....I would try fuel filter & then tune up.....
2007-04-26 15:54:48 · answer #4 · answered by 2muchcoffee 4 · 0⤊ 0⤋