Question about 2002 Pontiac Sunfire

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Think its my throttle sensor..

My car is acting like it wants to run out of gas every time i go over 45mph.. when i stop at a light or stop sign, before i get ready to go the car dies, i learned to fix the problem about when i stop.. i give the car a little gas while my foot is still on the brake to give it a little umph.. when i get ready to go.. help me... i brought it to an auto shop and talk to many mechanics.. they said it sounds like my throttle that what it is?

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Insp your idle air controler unplug when acting up at stop see if it makes any diffrencs. iac

Posted on Jan 06, 2009

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I have a 2002 Pontiac sunfire but have changed plugs twice the car acts like it wants to diedoes that when I stop at a stop light or stop sign and has some power lose especially if I run the air

well plugs are a start ---their are a number of reasons for your condition and since didnt mention any check engine we ll do the ones that dont usually set off the codes --need tune up filters coils wires did plugs ----fuel pump malfunction ---fuel filter--egr valve [carboning up]--catalytic converter clogging or failing --throttle body needs cleaning -throttle body position sensor dirty

Jul 24, 2016 | Pontiac Cars & Trucks

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Sometimes my car runs great then other times you step on the gas and it acts like it's not getting gas.what is the problem?

run the fault codes first
there are many reasons for this so instead of wasting money chasing guesses read the codes and get close to the problem
I'm thinking a problem accelerator position sensor or throttle position sensor but without the reports , that is just a guess

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97 Nissan Maxima Sensor ASM??

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Jun 19, 2013 | 1997 Nissan Maxima

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My 2002 Hyundai Accent has about 65,0000 miles and has three issues that I'm hoping are all caused from the same thing. It started "bucking" a few weeks ago and this was first sign of issue....

There's a good chance the Throttle Position Sensor (TPS) has gone bad. Have an electrician bench test it for bad spots (in the potentiometer). You may also have carbon/soot buildup on the throttle body thottle plate causing it to stick. Standard throttle/choke plate cleaner will take care of the throttle plate.

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I have a 1987 gmc shortbox pickup with a 305. it has the throttle body. i cannot get it to run properly. when it idols you can smell fuel. it will eventually die when idoling. almost like its flooding out....

Sound's like running rich, you need to scan your computer and check data for ect sensor (coolant temp sensor ) if bad temp reading will run rich and map sensor, both act like a chock in your truck, check for vacuum at map sensor do not disconnect harness from sensor or will give you code for map sensor .Hope this was helpful.

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My car acts like its running out of gas when it gets hot

it also sounds like it might be the distributor. Often overlooked until many more pricely repairs.... throttle position sensors have been known issues, I am pretty sure it is by your ignition block/rotor near the throttle linkage coming off the throttle body. If your car is not TBI then forget that last thing... hope this helps! ALSO try PCV valve... you never know and its only about $5.

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Running rough or fast

If both the MAF and 02 have been replaced, try the TPS (Throttle Position Sensor) also check for vacuum leaks. the hoses that come out of the throttle body are very vulnerable to melt from heat.

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3 Answers


Clean the throttle body with c.r.c. get it at autozone ect.The t.p.s. (throttle position sensor) could be acting up.The t.p.s. controls how much air/fuel enters the throttle body and if your problem only happens in the summer this may be your problem.

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