Grand Prix :: 2001 Pontiac GT - High Idle / Stuck Accelerator After Fuel Filter Change
Oct 27, 2013
I just changed my fuel filter and now I am having issues with the idle/accelator. When I get the car going to a speed of 40mph for example, I let off the gas and the speed barely drops. Then when I went down a side street about 20 mph, I let off the gas and the car just kept going. The idle was initally high, but then dropped down to it's normal 800rpm.
The only thing I touched under the hood was releasing the pressure from the fuel pressure regulator before the fuel filter change. I just removed the idle control unit and cleaned it but that didn't work.
2001 Pontiac Grand Prix GT/3.8L
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Drove 28mi out to dinner and when leaving after, she wouldn't start. Took it to work in the morning, and it ran fine prior to that. It was 15degrees outside, added heat to the gastank thinking the fuel line was frozen. Tryed to fire on, but it would only idle briefly surging while doing so and die, like not enough gas. It did start after I held the key down during this surging process grinding the starter also, should have driven home, but I shut it off like a idiot, as a result, had to tow home. Noticed TCS OFF light was lite up while it was running, then I shut it off, TCS OFF LIGHT went away when I turned key back on to attempt a 2nd restart. After i did that, it wouldn't fire on again. Towed to my house, I do not hear the fuel pump trying to kick on when i turn on the key. Fuel system is dry. Cranked over next day and definitely no gas in the lines. Bled the fuel system, no fuel shot out. Have checked the fuse box and the one under the hood too. Replaced the fuel pump relay but still no go just (this blows)...
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One day, I was on the highway and my Pontiac's speed started dropping. I looked at the temperature gauge, and the temperature was really high. I flushed the coolant system, and changed the gasket. Also the mechanic said that the oil might be leaking after they changed the oil. I paid like $700 for something that has nothing to do with the problem (I paid for a spark plug, ignition wires, fuel filter, and an oxygen sensor). After they changed the oil, oil started leaking all over my driveway, which didn't happen before. It also looked like coolant was leaking out. None of this happened before I got my oil changed with these guys.
After I changed the gasket, the car was running smoothly. But today, the same thing happened again, and I don't know if it's the thermostat, or water pump, or oil leaking, or coolant. The mechanic always suggests to fix something that doesn't have to do with the problem. I don't have much money on hand, so I need to only fix what has to do with the temperature rising, and I need my car to run.
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With summer heating up so is the engine. Temp stays normal at freeway speeds but as soon as I hit stop and go traffic it shoots up. Water pump is two years old. I flushed the radiator and didn't get much gunk out. Both fans are running when the AC is on. If I shut the car off but leave the key on the fans do not run when the car is not. I can't remember if they used to or not.
2001 Pontiac Grand Prix 3.1
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Just took off the throttle body of my 2002 GT to clean it. Had all of the sensors off (IAC, MAF, TPS). Put everything back together and it fired right up but immediately went to 3000 rpm and acted like it would keep climbing.
Thought I was very careful putting everything back together. Obviously the throttle is open but there is no play in the throttle cables. Could it be a sensor?
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When I turn the car off the key only goes to acc. If I wait a few minutes I can hear a clicking sound coming from the steering column I think. Then I can turn it off all the way.Whats causing this? and how do i fix it. My car is a pontiac Grand Prix 2002.
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The grand prix is stalling at different times when driving, I cleaned mass air flow sensor. still has same issue, car stalls and have to put in neutral and start while driving.
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I have a 2005 Pontiac Grand Prix V6 and for some reason my washer fluid sprayer just stopped working. Yes, the fluid is full...hahaa. So anyways, I checked the fuses and they seem to be ok. What I can check before tearing it apart or bringing it in? How do you know if the motor is bad? Where is the motor located in this car? The wipers are working fine, but it'd be nice to clean the windows.
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I have a 91 pontiac Grand Prix with a 3.1 and the car has NO leaks, however, I have noticed that the transmission fluid level go down and the engine oil goes up. My conclusion is that some how the tranny fluid is crossing over to the engine, is this possible? and if it is, how or where?
NOTE: my car has a tranny cooling line to the radiator but no engine oil cooling lines and the colant is clean. how is it possible?
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Where the fuse that controls oxygen sensors on a 1997 pontiac grand prix 3.8L engine? i read some where it is under hood fuse panel, but what is the marking for the fuse?
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I am getting a thumping noise from front tires,can't really tell which side? as i turn to left it seems to stops until i straighten wheels.
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We have a 2003 Grand Prix. For the last few years it has this intermittent problem. Sometimes it just won't start and occasionally it will die while stopped at an intersection. I did some digging online and found out what the likely culprit is, but do not know how to fix it. I already spent a lot of money for a mechanic to claim he fixed it, but didn't.
According to online sources [URL] .... the security system TDM is at fault. It stops recognizing the VATS transponder in the key and thinks the car is being stolen. So, it cuts the connection to the engine. Clearly a dangerous situation if you are driving. My 17 yo daughter recently got stuck in a very busy intersection.
The temporary fix is to turn the key to the on position without turning the engine, wait 10 minutes then try starting the car. This is supposed to reset the security system. Now this is starting to not work. Someone suggested bypassing or modulating the TDM signal by adding in a resistor. I really don't feel equipped to do this though. Another solution is to buy a bypass module.
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I have a 1999 Pontiac Grand Prix. The needle on the temp gauge will float up and down after about five mins. of drive time...after a short period of time, however, it will settle around 200 degrees or so. (The heater will not blow warm air while the needle is floating.) The only time the needle starts to rise is when the vehicle is stopped in traffic, but even then, it never gets into the "red." The car never overheats and I have yet to see any coolant on the driveway.
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2002 Grand Prix, 3.8L na motor, 187K miles. It was running perfectly until 4 days ago. initially, odd gauge stuff and flashing air bag light, then very, very slight engine skip with the tach gauge flipping around. 2 days ago, harder than usual starts ( a couple of seconds cranking instead of instant starts ), 1 day go, longer cranking in the morning, worse stuttering at highway speed. Afternoon, very hard start, stuttering right away, and then it would hardly start and quit after seconds. Gauges flipping and relays buzzing under the dash.
I had it towed home. Moving the key to run I didn't hear the fuel pump running. Checked the pressure at the rail, zero pressure. I removed the relay and jumped it to run the pump at high pressure. Fuel pump ran, pressure was 50-60lbs. Reinserted the relay, tried to start it and no change. I couldn't hear the pump running. Removed the relay and jumped the pump again, left it running and tried starting the car. Also no start.
I'm thinking it may have something to do with the ignition switch, PK3 system, BCM or PCM although I'm not sure which way to go with testing. I'm going to re-check the fuel pump and then start taking ignition switch out.
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I have a grand prix and am having problems with the air flow. I think that the diverter is stuck/broke as air flow blows through all vents (defroster, 4 dash vents and floor). When I turn the switch that tells where the air to blow out, nothing happens. In the summer, the A/C works but since it comes out the floor vent my toes get cold. Does this sound like the diverter is stuck? Is there a way I could make the diverter only come out the dash vents? The car has 180K miles and I don't want to invest much money to fix this (i.e. taking to dealer).
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I was driving along nicely, then faced with a climb up the hill, I floored it ... the throttle stuck fully and the revs up to 5000 RPM and the governor kicked in, zoom ... hmmm zoom hmmm .. I was lucky cuz I shut off the engine and was able to coast back down to my driveway. No code reader, I decided "how hard can that be" since it happened once before and then worked ok for 6 months ... maybe a linkage, etc
A friend looked at it and tried the old process of elimition ... unplugging the MAss Air Flow connector ... trying it ... then the TPS on the throttle body. He suspected one or both. So I replaced them... happy to get the sucker started without revving uncontrollably. But the pedal was sticky, the idle speed too high and when you press the brake pedal ( and nothing else ) the car stalls, putt putt putt kerplunk. Starts up again tho. but impossible to drive like this. So I gets me a code reader .. follow the directions and this is what I get now
P0441 Evaporative Emission system Incorrect Purge Flow ( this is an easy one even for me ... the engine light came on last time I fueled up - gas cap was not turned enough ) no brainer
P0122 Throttle / Pedal Position Sensor A Circuit Low Input
P0101 MAss or Volume Air Flow Circuit Range / PErformance
P0222 Throttle / Pedal Position Sensor B Circuit Low Input
P2119 Throttle Actuator Control Throttle Body Range / PErformance
P2112 Throttle Actuator Control System Stuck Closed
P2422 Evaporative Emission System Vent Valve Stuck Closed
Puzzling since whatever broke started working again spontaneously last time. I figure, it cannot be all the above at the same time .. perhaps one of the early sensors?
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Changing tranny fluid/filter today, all has been going great until I went to take the filter o-ring out that didn't come with the filter. It will not come out! made a hook tool out of an old tooth brush like someone on here did, o-ring wont budge. Tried a hook pick, it wont dudge (actually bent the tip on the pick and started to tear the o-ring). Everything is ready to go back together and get filled, but this stupid o-ring will not come out!
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I am a proud owner of '97 Grand Prix GTP, it has always been a great car with really low maintenance for me. A few days ago I noticed a mild fuel smell and I checked the gas cap, the external fuel filter, etc... Then I lifted the hood and I saw that one of the two fuel lines that run between the firewall and the brake fluid reservoir had a seepage leak in front of the factory loom that secures both lines before going over the supercharger and on to the fuel rail. A fuel leak needs to be repaired immediately, so this is where I am so far.
I noticed that the leaking fuel line is actual a rubber/plastic fuel hose that is covered by a plastic heat proof cover that protects the hose. It runs from the firewall to the fuel rail along side another fuel line of the same size (a supply & return line I believe). Just before going over the supercharger they both have quick connect metal ends that meet two metal fuel lines that end up at the fuel rail. My current issue is that this plastic/rubber hose section of fuel line is discontinued and no longer available to order according to my local GM parts dealer. The way I see it, hunting down this part can be Plan A and Plan B can be duplicating this hose by making it with high pressure fuel injection hoses and the appropriate quick connect fittings.
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Radio is fine, all gauges and such seem to be normal. The climate control unit displays 75 degrees, the fan is blowing, but none of the controls do a darn thing. I can't turn it off, up, down, or anything. Where to start looking?
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Having an issue with my car blowing fuel pump fuses every once in a while under heavy to moderate acceleration. Have replaced inline fuel filter and the fuel pump resister(white ceramic part). Runs fine with normal driving, but when I want to get some horses out of it, it will cut out and stall and once i replace blown fuse it will start back up again, and I'm off and running again.
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My 1999 Grand Prix GT has been having problems. Here's what it does:
*Turn the key, it cranks but wont turn over.
*Turn the key, it will turn over but dies immediately.
*Turn they key, it will idle smoothly for a few seconds - minutes and eventually die.
So far I have replaced my Fuel pump and filter.
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