1999 Grand am 3.4 v6 Starts and then dies immediately (need help))

Asked by Aug 01, 2016 at 06:16 PM about the 1999 Pontiac Grand Am 2 Dr GT Coupe

Question type: Maintenance & Repair

I have a 99 grand am and my car starts ands runs for a second or 2 and
dies out.. Ive replaced the Crank sensor, also the ignition coil module, My
fuel pump does turn on and does seem to be working since I was able to
test foor fuel pressure with a result of 42 psi, my security system is already
bypassed, and stepping on my accelerator does not make a difference
when starting the car. I also have spark I figured because i replaced the
whole ICM and the car starts. I am just lost at this moment any help would
be really appreciated

6 Answers

104,425

Still sounds like the security system is active to me. Will it stay running if you try spraying some starting fluid in the intake just before it dies out? If it does then recheck fuel pressure and flow, If not then check to see if you still have spark just after is quits. If you have spark then check for injector pulse if no pulse then the ECM is shutting it down due to security concerns.

Spraying starting fluid did not help me still same issue, and I checked fuel pressure 3 times and it seem to 42 psi which is normal, but before all of this even happened, I put in a new engine and I had it running without doing any security procedure and it ran for 30 mins and I was doing the process of bleeding coolant... While bleeding coolant the car just shut off and it wouldn't start any more it would just crank but not start as if it wasn't getting any spark , I found that the wire going from my crank sensor to my icm and it seemed burnt so I replaced the crank sensor and icm and also the wire connecting both, and now my car starts and shuts off after 2 seconds.. In other words I really don't think this would be an security issue since I had the car running before with out the procedure and have the system disabled, but I do notice a solid security light, it's not blinking at all

104,425

Have you tried disconnecting a battery cable and allow the system to reset after all of your repairs? If not give that a try. Remember it could rearm the security system.

Yeaa I tried that method , but the thing is that the security procedure will only work if my security light is blinking , but it's not it's a solid security light

Any suggestions?

Possibly the ignition switch. The sad thing is, it's really easy to replace in a 1978 ford, but it might get complicated with the security system that exists in your pontiac. Can only suggest the cause at this point, sorry can't help further.

Your Answer

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,037 nationwide Grand Am listings and the tools to find you a great deal.

ZIP:

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    7,890
  • #2
    John Saffrahn
    Reputation
    1,610
  • #3
    Tom Demyan
    Reputation
    1,580
View All

Related Models For Sale

Used Pontiac Grand Prix
12 Great Deals out of 2,553 listings starting at $1,750
Used Pontiac Firebird
10 Great Deals out of 767 listings starting at $2,500
Used Chevrolet Camaro
503 Great Deals out of 33,525 listings starting at $1,450
Used Chevrolet Impala
563 Great Deals out of 36,779 listings starting at $990
Used Ford Mustang
608 Great Deals out of 39,004 listings starting at $1,500
Used Toyota Camry
1,007 Great Deals out of 101,202 listings starting at $300
Used Honda Accord
1,200 Great Deals out of 74,751 listings starting at $561
Used Honda Civic
774 Great Deals out of 67,983 listings starting at $999
Used Ford F-150
3,205 Great Deals out of 239,355 listings starting at $1,300
Used Chevrolet Monte Carlo
9 Great Deals out of 1,236 listings starting at $1,488

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.