help! 2000 gtp stalls randomly then starts up 5 minutes later!

**chicagosleeper** · 08-01-2013

hey guys kinda new here been trying to diagnose my grand prix but im havig some problems! it all started a couple months ago when my car died randomly in my parking lot but started up the next day. after that no problems for a couple weeks until it started to stall out on me on my morning drives to work. it would stall out no sputters or anything just dead. it would start up the 3rd or 4th try. I started to do this more nd more so I left it at my parents house for a month or so so my dad could get it looked at. needless to say he takes it into his shop the tech runs it on the scanner for 2 hours and nothing happens. he continues to drive it for 3 weeks and no problems at all! no I get my car back and it dies not even a mile from my parents house I trun it over nothing I try 5 times then it turns over finally! I was fed up. so I changed my fuel filter which was nasty btw clean my air filter, throttle body, IAC and replaced the fuel pressure regulator. after all that she died on me the next day. I have now bent the tab on my #15 relay for the low to high speed fuel pump. what can I do next ?! 2000 Pontiac grand prix gtp 231,000 miles ! hope you guys can help!!

**chicagosleeper** · 08-01-2013

I honestly don't know what to do next but to buy the fuel pump resistor relocation kit and see if that will do the trick !?

**Bills1997GTP** · 08-01-2013

Do any lights light up on the dash before this happens? Or is it just a random thing

**chicagosleeper** · 08-01-2013

Its a random thing no cels or anything but as of yesterday I have p171 I think bad o2 clogged injector or fouled plugs. I'm leaning towards the fouled plugs considering how bad my fuel filter was.

**Scottydoggs** · 08-01-2013

your crank sensor is taking a crap on you, time to change it.

if you noticed the tach dropping to zero before it stalls, its the crank sensor for sure. this sensor rarely sets a code for its self. it causes random stalling as you drive down the road. will fire right back up, or not, or next week lol just like your saying its done.

http://www.grandprixforums.net/how-r...sor-60906.html

**chicagosleeper** · 08-01-2013

Is there a way to make sure its the cps?

**ericspecullaas** · 08-01-2013

Originally Posted by Scottydoggs

if you noticed the tach dropping to zero before it stalls

^^ this scotty told you what to look for gesss freaking read sometime

**chicagosleeper** · 08-01-2013

Is there anyothet way? Or is it just hope I see it drop before it cuts out on me?

**h0wl0ngcanitbe** · 08-01-2013

It sounds like your CPS its easy as long you have the correct puller

**Scottydoggs** · 08-01-2013

id have to say if you searched the forum here far and wide, every post that says, my car stalls out while driving, no warning at all, i noticed the tach drops to zero before it stalls, some times it starts right back up, other times it needs a tow truck. then will start when its back home 4 hours later......it was the crank sensor gone bad.

**kjclawson** · 08-01-2013

Had a similar problem just last week. I replaced a few other things and it turns out it was the crank sensor...

**chicagosleeper** · 08-02-2013

can i complete this job without having the "HB/steering wheel puller"? i only have hand tools no fancy pullers or anything!! :/ i was going to attempt to do this tomorrow morning..

**Scottydoggs** · 08-02-2013

you need a puller, like this one, and the right bolts, they are listed in that how to thread.

you can rent this type of puller for free at az or pep boys. but will have to buy the bolts you need from a hardware store.

**ericspecullaas** · 08-02-2013

not busting your balls scotty but that engine looks backwards like the starter is wrong.

**ericspecullaas** · 08-02-2013

but yeah that is the right tool for that. other than the starter beening in the wrong location. what car has the starter next to the harmonic balancer? I would like to slap that engineer

**Scottydoggs** · 08-02-2013

i dont have a clue what engine that is lol (stole it off the net) but like stated, its the puller you want to use, and no other.

**ericspecullaas** · 08-02-2013

thats why i said im not busting your balls lol i figured you got it off the net

**Scottydoggs** · 08-02-2013

Originally Posted by ericspecullaas

thats why i said im not busting your balls lol i figured you got it off the net

i hear ya, i thought id comment.... that engine looks like its air cooled like VW engine.

**Abtc** · 08-02-2013

I. New to pontiac a. But I had the exact same symptoms in my thunderbird supercoupe. Drove me nuts.
Changed it out havnt a stalling in 5 months. It's the crank sensor.