Question about 1994 Pontiac Grand Am

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94 grand am starts runs for a second then dies

Starts but does not stay running

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The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.

Posted on Feb 19, 2014


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Posted on Jan 02, 2017

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SOURCE: starts but doesnt stay running

I'm not sure your car even has one but the symptom is reeeaal familiar; 'starts fine, dies afterward.'
Ignition coils used a special resistor or a relay that switched one in or out of circuit depending on whether you were starting the engine or afterward, running it. The special resistor started at a low value of resistance but rose rapidly to a higher one allowing more current to flow through the coil primary to start. The design using a relay simply bypassed a fixed resistor (not heat sensitive) during the cranking of the engine.
The resistor allowed either a full 12 volts or at least a good bit of it to be used for starting by supplying the primary of the coil with a much higher voltage than needed to only keep it running. This allowed the use of a 'hotter' coil that stepped up the voltage more than was done 50 years go. That high current could not be tolerated for longer periods as it would eventually cause heating to the point of coil failure.
If you can come up with an electrical diagram of your ignition system, check the path of voltage to the ignition coil and keep an eye open for a symbol of a zig-zag line inside of a rectangle, a symbol often used in other schematics, and if you have one that has an arrow across the zig-zags, this is the thermally sensitive resistor that needs no relay to function.
These were often mounted on the fire wall, not far from the steering column so the wire run wasn't overly long and are often in a ceramic rectangle with wires attached to either end. 

Posted on Sep 28, 2008

66 chrgr
  • 1011 Answers

SOURCE: 2000 pontiac grand am gt wont stay running

replace your idle air control solenoid which is mounted on the throttle body .also check for vacuum leaks.

Posted on Feb 26, 2009

  • 12 Answers

SOURCE: I have a 1994 Grand Am taht's been sitting for 2

Is your car fuel injected or carbed? That question is of no value , it only lets you know where to start...The problem is Your car isnt getting any fuel from the tank........Look for a small valve near the fuel rail ( if it is fuel injected) sorta looks like a tire valve stem, and it works like one also......You could try bleed the system of air by pushing in on the little stem in the center of this while someone tries to start it. When you get nothing but fuel your cooking...Make sure you disconnect the coile wire "out of the Coil" before trying this...........If it is carbed, check you filter and then unscrew the fuel line from the carb just enough to see if there is fuel getting to the carb while turning over the eng. If none of this works,,,,,,,you may have a fuel pump problem , and if i am not mistakening that baby is in the tank...Let me know!!!!!!! RC

Posted on Mar 04, 2009

  • 15 Answers

SOURCE: 2002 grand prix runs rough,dies service engine

sounds like you have a vacuum leak, check all the vacuum hoses and replace any broken or kinked ones, also check around the intake manifold gasket for leaks. any air leaks after the air flow meter creates 'un-metered' air which inturn will make the car run rough and stall, hope this helps

Posted on Apr 04, 2009

  • 6826 Answers

SOURCE: 98 grand prix gtp starts runs for a few seconds

may not be fuel related,replace crank shaft sensor,if it isnt that ,,,ignition module

Posted on Jul 05, 2009

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Are you certain that its a fuel delivery problem? Since it DOES start and then Dies...i would look into "Cold Starting" problems.. Like a Coolant Temperature Sensor -- it acts like a choke for these newer cars. Next time you start it...rev the engine and try to keep it running for a few minutes.....see if it stays running after you get the engine warmed up....if it DOES stay running...then thats the problem. Otherwise try to get the trouble codes from the OBD2. you can usually rent or borrow them from your local Auto parts stores. Keep me posted and i can help you figure this one out.


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If you have a security system, close all the doors and then lock the drivers door with the key, then unlock it. That should re-set the system. I've had the computer completely disconnected from mine several times (used it to check another vehicle) and I don't have started and ran fine...only difference between the two is the security so I'd try that.

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93 Jeep Grand Cherokee Won't start

The crankshaft position sensor was seriously problematic in those old jeeps. It's located towards the top of the bell housing slightly to the driver's side I think.

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2000 pontiac grand am gt wont stay running

replace your idle air control solenoid which is mounted on the throttle body .also check for vacuum leaks.

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