Hey y'all

**JohnZinOC** · 03-12-2010

Hey Grand Prix Forum Folks,

Name is John Z. from OC (Orange County) CA. I have a 1999 Grand PRix GT 3.6L Nornally aspirated with 137K Miles and have not had the chance to modify but look forward to at least aan K & N and a Chip.

BUT>>>

My curent issue is a GP that is not running. All of a sudden it starts, then dies, starts then die. I changed the plugs last week before going to Vegas and it has never ran better. Got home from work last night, ran fine on the way home. 30 minutes later went to run an errand and it won't stay started. Fuel Filter??? Fuel Pump?? I have never changed the Fuel Filter and don't know wwehn it was last changed so I will start there. Any help would be greatly apprecitiated. This has been one of the funnest and most reliable cars I have ever owned and love it!
Thanks, John Z.

**IrishNation24** · 03-12-2010

maybe becuase its a 3.6!!! your engine bay is empty!!

**TorqueAutoMotiv** · 03-12-2010

Before throwing parts at it do some basic trouble shooting Listen for the fuel pump if you hear it its more then likely fine unless the fuel filter is seriously clogged the car would still run
Do you have a service/check engine light on
Could be a number of things cam and crank sensors maf sensor

**TorqueAutoMotiv** · 03-12-2010

if you sign up at gpona.com they have the gm service manual linked to the site has some good info as well as repair guides

**MizzBecca** · 03-12-2010

welcome =)

**GTPJOE90** · 03-13-2010

its a 3800 or 3.8 bro..

**imdaman3** · 03-13-2010

maybe its a special addition car lol or its a mistake da__it and he ment 3.8

**OrangeL67** · 03-13-2010

Change the filter and check the pump 1st. My pump started going out at about 145K miles. Clean the MAF senssor and check the vacuum connections. Also there is a fuel pump resistor on the inside of the passenger side fendor near the battery. Its a couple inches by about an inch and its pretty flat. Check it out. One of these should definately get you running and keep it that way.

**JohnZinOC** · 03-14-2010

Right. Yah I know. 3.8 or 3800. Other things on my mind...

**JohnZinOC** · 03-22-2010

Hey OrangeL67. This applies to a GT with no Super Charger Right? Could locate it at first, but I am about to get back under that hood now. I changed the actual relay inside the engine compartment fuse bay (#14 Fuel Pump). No change. Cleaning throttle body now, as I have replaced the fuel filter.
Thanks to you and everyone here at thsi Forum.!!! Wish me luck...

**JohnZinOC** · 03-22-2010

TorqueAutoMotive.

Thanks for the recommendations man. Fuel Pump seems OK, changed Filter, no changed fuel filter and Fuel Realy (#14 in fuse box underhood. No change. Oh and sorry dah, no engine lights on now or prior to this issue. Just the Traction Control Light at start up sometimes. Still will not stay running and stalls with restart at this point on Monday 3/22/2010/. Dudes, it sucks to be carless on unemployment. Grrrrr.

**JohnZinOC** · 03-23-2010

PONTIAC PANIC

Good Evening Pontiac Comrads,

Grand Prix GP still inoperative.

Cleaning ThrottleBody and MAF Sensor tonight and tomorrow AM. Then if that does not work, I intend to simply unplug the Crank Sensor as recommended inanother article. If that does not work, will probaly replace my MAP Sensor and / or MAF Sensor / CAm Sensor. Then finally, if these do not work, I will replace my, Fuel Regulator and finally, my fuel pump all in that order testing between each. Then if that does not work, get a new ECM and/or maybe EGR Valve. That about covers every fricken engine management component outside of theO2 sensor.. Grrrr. Injectors will be a last resort.

HELP!!!!! John Z.

**JohnZinOC** · 03-23-2010

Oh yah, and possibly plug wires and coil. This, I am afraid is going to be an expensive outage. Considering bringing it to dealership, but have read that they are not much help on this Pontiac anomole. I ain't trying to restore the vehicle, but at this rate..., might as well look into a GTP or at least the top end.

JohnZinOC

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