Service Engine Soon Light?

It could be a bad fuel injector for that cylinder, or coolant leaking into that cylinder, or low compression on that cylinder.

This guide will tell us for sure by getting the codes

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.

My 2001 pontiac gramdam hesitate to accelerate when you press the gas pedal to speed up and the check engine light flashes while its hesitating to go, it runs bad like its about to cut off when stopped at a traffic light. please help

Have the trouble codes checked. Let us know.
How long since a tune-up? Check the tps.

You may need to clean throttle-body and idle air control.

tuneup was done 2mths ago..

how do i clean the throttle-body and air control??

Remove the throttle-body to clean. Some of the national brand autostores used to check trouble codes for free. There should be some codes.

In the picture, #2 should be the iac.

thanks i will check codes and clean air intake and let you know the outcome.

Let us know.

I cleaned the throttle body and the idle air control it running alot better, but still sluggish when i stop at a light with foot on brake it idles rough.. like it wants to cut off..

Any codes?

no codes

Have 2001 The hoses are good and fans or working and it doesn't go on the ground and don't over heat. It does this out of the blues would like to know were the antifreeze is going. We just flushed it and put knew water pump in and other things...and now abs light came on and services. Vehicle. Soon light. And traction light show off. It comes on and goes off...then had heater on blew cold air out then went to heat.

I'd use a scanner and look at idle and idle required. Idle required is what the computer is trying to get it to idle at. Idle is the actual idle. If idle required is higher than actual idle, the computer is having problems, for some reason, trying to raise the idle. I'm not saying the computer is faulty, there may be a problem with input to the computer from different sensors. Without something to point us in the right direction, it is hunt and peck.

You may be loosing anti freeze into engine. If your exhaust is smokey and smells like anti-freeze you probably have a bad head gasket. The low coolant level and/or coolant loss can create air bubbles in the sytem that need to be burped or after you did the water pump you have to burp the system. You do this by turning the heat all the way hot and fill the system till top. Then start car and wait unitl it reaches operating temperature and topp off again. Put the radiator cap on and drive around some. When the car cools off check the fluid level, if it has not changed, there is probably not any air. Also see if coolant is, "Foamy" as that is indication of air in sytem. The heater might have had to burp out a bubble before fluid could flow into it. As long s it does not do this everytime it is okay. But, if you are loosing coolant and cannot find a leak it may be a bad head gasket. You can do a compression test or coolant sytem pressure test to check this.

I am in the process of purchasing a used 01 Grand Am GT. The car only has about 80,000 miles & seems to be in tip top shape. The only issue is the check engine light is on & when the car is in park it idles funny. Its not too bad but rpms goes up then down pretty quickly. The dealer said he would fix it before the purchase but I would like to know what the issue is. Thanks.

Sounds like the idle air control valve not maintaining the idle speed.

The dealer is aware that there's a problem within the engine management system why couldn't they fix it before selling it to you? If it was me I will say goodbye and never comeback.

If you really want this vehicle get it scanned for code/s this will tell you what's causing the CEL to come on and go from there

Thanks, I will def keep that in mind. He stated that he does have the equipment to scan it for a code & it will be fixed before we purchase it. If it is not fixed & the issue is not resolved then we will not be purchasing the car of course, I'd be a fool if I did. Thanks alot!! Great response time!

Our code reader said the code was p0113. Where is that and what kind of actions will the car make with that code?

CIRCUIT DESCRIPTION
The Intake Air Temperature (IAT) sensor is a thermistor which measures the temperature of the air entering the engine. The Powertrain Control Module (PCM) applies 5 volts through a pull-up resistor. When the intake air is cold, the sensor resistance is high, and the PCM will monitor a high signal voltage on the IAT sensor signal circuit. As the intake air warm, the sensor resistance becomes lower, causing the PCM to monitor a lower voltage. If the PCM detects an excessively high IAT sensor signal voltage, a low temperature is indicated, and DTC P0113 will set.

CONDITIONS FOR RUNNING THE DTC


•DTCs P0101, P0102, P0103, P0117, P0118, P0125, P0128, P0502, P0503, P1114, or P1115 are not set.
•The vehicle speed is less than 56 km/h (35 mph) .
•The mass air flow is less than 12 g/s .
•The engine coolant temperature is more than 60°C (140°F) .
•The engine run time is more than 3 minutes .
CONDITIONS FOR SETTING THE DTC


•The IAT signal voltage indicates an intake air temperature that is less than -37°C (-35°F) .
•The above conditions are present for at least 20 seconds .
ACTION TAKEN WHEN THE DTC SETS


•The control module illuminates the Malfunction Indicator Lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
•The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC


•The control module turns OFF the Malfunction Indicator Lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
•A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
•A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
•Use a scan tool in order to clear the MIL and the DTC.

yes hello I have a question relating to my car its a pontiac grand am se,2000 2.4 liter and I keep getting a code for the check engine light saying to replace the o2 sensor and knocker which I have already done,so what else could possibly be the problem

Have you checked the wiring to the sensors for damage?

Have codes erased at most autoparts stores.

Code says that O2 sensor is out of range, does not necessarily mean that the sensor is bad, could be a fuel injector, clogged CAT, fuel pressure, vacuum leak, etc.

Engine Mechanical problem
2000 Pontiac Grand Am 4 cyl Automatic

my service engine soon light is on and blinking, the cars idle is off and when you come to a stop or slow down the car will shut off. when it is running it sounds like a lawn mower.

First thing you need to do is have the codes read, Autozone does it free, Post the results with the code number(s). Even if the service engine light is not on, there should be freeze frame data stored.
If it won't make it to Autozone, buy a cheap scanner, they can be had for 30-40 dollars, a good investment, since they cover all cars sold in the USA from 96 on...
If the light is blinking, it means engine misfires possible damage to the Catalytic converter...service it right away!

yes the light started blinking on way home the other day and thats when it started running like crap, we did already hook up the scanner it said cylinder 3 was misfiring or only running on 3 cylinders. a few months back i took my car to a repair shop becau se it was loud and i thought there was a hole in the catylic converter but i guess it turned out to be be a hole in the resignator so they didnt have one so they ran a straight pipe in place of the resignator, would this be my problem? the repair shop i took my car to get repaired this time put a used motor in my car about 5 mo ago this was after the resignator and they are saying it is a coil thats bad? but they seem kind of shady.

Well you do have a misfire, so the code was P0303, For cylinder #3, Check coil, wires and plugs..also could be a bad fuel injector.

Engine Performance problem
2000 Pontiac Grand Am 4 cyl Front Wheel Drive Automatic

meaning for code reader po452 EVAP emission control system sensor low

The fuel tank pressure sensor is used in order to detect a vacuum decay or an excessive vacuum during the EVAP diagnostic routine. The sensor responds to the changes in the fuel tank pressure or vacuum. The signal voltage to the Powertrain Control Module (PCM) varies from a minimum of about 0.2 volts with pressure in the fuel tank to more than 4.0 volts with a high vacuum in the fuel tank.
here is the description,post back with any other questions.

hi! i recently had the 90k maintenance service done, but the car is still having some problems. first of all, i don't think the shop it was in ever diagnosed the engine and i don't think they did what they were suposed to do at tune-up. i'll go back and ask them.
but anyway, i have the service engine soon light on and i get about 15mpg. i suspect it's the oxygen sensors and / or injectors. i plan to take it to a dealer and get a full diagnostic on it. how hard is to replace the oxygen sensors and/or injectors. do i need to go into the ecm and reset it afterwards?
thanks!

as far as injectors or 02 sensors if there replaced nothing has to be reset,just plug and play.before you suspect anything have it scaned or diagnosed.could be something simple and inexpensive.post back with any other questions.

2000 Pontiac Grand Am
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my car keeps stalling out while I'm driving. It runs great unless I drive too far or go over 65 mph. It will
start up again after a few minutes. I'm trying to avoid
taking it in for a diagnostic test, since no display lights
come on (check engine soon) etc. Could you recommend anthing to check for. My husband thinks
maybe an ignition system problem.

thank you!

Lynne fox

[quote:cfe42166c6="03397036"]2000 Pontiac Grand Am
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my car keeps stalling out while I'm driving. It runs great unless I drive too far or go over 65 mph. It will
start up again after a few minutes. I'm trying to avoid
taking it in for a diagnostic test, since no display lights
come on (check engine soon) etc. Could you recommend anthing to check for. My husband thinks
maybe an ignition system problem.

thank you!

Lynne fox[/quote:cfe42166c6] Hi my name is Jimmy I am having the exact same problem with my grand am 2000. Exactly the same thing happends to mine, I changed my fuel pressure regulator and fuel filter thinking it may be the problem but still happening. I am wondering if my fuel pump may be going bad and cutting off after i run the car for a few miles or go too fast but I am not really thinking its that, and I get no engine light to come on or anything. My car restarts after like 2 min and will go further untill it happens again but always starts back up. I am puzzled on this one...

jimmy,
Thank you for your comment. I am replacing the ignition module this week, since many people think
it is electrical. I'll let you know if that fixes the problem.

Lynne Fox

We decided to take the car to a pontiac dealer instead of guessing it's the ignition module. It will
probably cost us an arm and a leg but I'll let you know what they find out.

Thanks Lynne.... I really appreciate you letting me know what the probelm is when you find out. I was also thinking it could be the ignition control module like you said but I also for some reason think it could be the fuel pump as well.

Lynne I went to AutoZone and took off my Control module to have it tested inside which they will do free of charge, you have to remove the part yourself and take it in...The module passed the test and is good. I am not sure if it may be my fuel pump which I suspect but I don't wish to spend that much money on one and go through all the labor of putting it on if it is not the actual problem. I will let you know something soon if I find out anything else.

i have a 2000 pontiac grand am and it is throwing a random misfire code how can i fix it? when it does run it has service engine soon light come on.

jimmy,
the dealer is installing a fuel kit- fuel pump, sensor etc. The mechanic drove it the other day and it stalled out and wouldn't start up again. We pick it up
tonight, 750.00. I'll let you know it that fixed the problem.

Are you feeling misfire? What has the maintenance been like? It could be as simple as a faulty spark plug or wire, could be a fuel injector, or even an internal engine concern. The first step would be to isolate it to a specific cylinder, and proceed with diagnosis from there. If it has been a while since tune parts have been replaced, that may be a good idea for a start.