NEED HELP!

Started by TGP Nick, May 05, 2007, 01:33:31 AM

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TGP Nick

#30
I did a compression test on Kyle's TGP today, and it has about 165-170 PSI of compression.

I checked for spark and it DEFINITELY has spark- I held the plug close, but not touching any metal, and had someone crank it over, whatever gas was in the engine shot out and ignited the spark and pretty much turned into a giant flamethrower aimed at my face and burnt me pretty good... some hair has gotten singed, but its all good.... but yea it DEFINITELY has spark!!!!

What next? 
Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT

jimmy

#31
      Are you fricikin serious  :laugh: Nick , please man , Don't get me wrong, I think I'd DIE for my TGP to, but first you have to live a little longer than you have now. Be careful dude, dawm

TGP Nick

And it wasn't even my TGP either :laugh:  lol  Yeah I dove out of the way as soon as I saw the gigantic flame coming toward my face, so only the very tips of my bangs I guess they're called got a little singed... just the tips though- and the hair on my right arm is half gone- not like there was much there in the first place :laugh:
I'm perfectly fine- I dove out of the way quick enough to not get singed too bad...lol

Kyle your car is out to kill me!! ROFL jk :laugh:
Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT

TGP Nick

I tried to start the car again today with no luck....but I did notice something.... the oil pressure gauge seriously WIGS OUT! as soon as I let go of the key after cranking it for a few seconds.  I'm not even touching anything and the needle goes to zero, then BANG it pegs itself PAST 80PSI, then it goes to 20 then shoots back to 80 and it will wig out like this for awhile if you let it... it does stop if you turn the key off for a few seconds and turn it back on....

Does this bring up any other ideas?
Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT

Dark Ride

Quote from: TGP Nick on May 16, 2007, 07:44:50 PM
I tried to start the car again today with no luck....but I did notice something.... the oil pressure gauge seriously WIGS OUT! as soon as I let go of the key after cranking it for a few seconds.  I'm not even touching anything and the needle goes to zero, then BANG it pegs itself PAST 80PSI, then it goes to 20 then shoots back to 80 and it will wig out like this for awhile if you let it... it does stop if you turn the key off for a few seconds and turn it back on....

Does this bring up any other ideas?
oil pressure sensor can shut the fuel off, if thats bad then...
-Mitch Reed
1998 Pontiac Grand Prix Supercharged
Some Modifications
1990 Turbo Grand Prix
Restoration In Progress
Quote from: grinders_18 on July 24, 2007, 07:31:07 PM
Yeah, I just couldn't figure out a way to work in the one member who claimed that adding a valance to his lightbulb kept it from overheating...

Prospeeder

but he said fuel came spraying out, so it probably has fuel. its probably wiring or somthing. Whats wierd is my TGP wouldnt start for like 3 days for no reason, then suddenly started like nothing happend and ran great, never had such a problem again.....wierd
1990 TGP Chipped RU-1390 K&N
2001 Audi S4 Stage 2
1999 VW Beetle
1997 BMW 740iL

Dark Ride

#36
Quote from: Prospeeder on May 16, 2007, 11:10:26 PM
but he said fuel came spraying out, so it probably has fuel. its probably wiring or somthing. Whats wierd is my TGP wouldnt start for like 3 days for no reason, then suddenly started like nothing happend and ran great, never had such a problem again.....wierd
The oil pressure sensor can shut the fuel pump off, the pump will turn on when you turn the key but the sensor can shut it off, At least thats my understanding.

EDIT: Nick, you mentioned that you had to charge the battery, a bad battery will cause some of the wierdest symptoms you've ever seen.  (I never knew you could have negative RPMs, LOL)  Just a thought.
-Mitch Reed
1998 Pontiac Grand Prix Supercharged
Some Modifications
1990 Turbo Grand Prix
Restoration In Progress
Quote from: grinders_18 on July 24, 2007, 07:31:07 PM
Yeah, I just couldn't figure out a way to work in the one member who claimed that adding a valance to his lightbulb kept it from overheating...

mfewtrail

#37
The oil pressure switch is probably bad and causing it not to run. The switch serves two purposes...it sends information to oil pressure gauge in the cluster, and it supplies voltage to the fuel pump when the engine is running(the fuel pump is powered by the starting circuit/fuel pump relay initially and then when oil pressure builds, it is powered through the oil pressure switch).

EDIT:  I can scan up a troubleshooting chart related the fuel pump/relay/oil pressure sensor if you want...
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP

grinders_18

The oil gauge has been doing that for as long as I can remember. And the battery is a BRAND NEW Optima Red Top, so I'm fairly confident it's fine...he charged it as a way to make sure all possibilities were being covered.

Now, coming back to my mind, here's how the week went: Didn't drive it Saturday or Sunday, as I recall, as I was driving the Camaro. Spent most of Sunday cleaning the Prix. Monday, Tuesday, and Wednesday the car sat in my garage, not being started, as I was sick as hell. Wednesday night, I had to move it out of the garage, and then this happened: when I tried to start it, I had to give it gas to get it to turn over. Now usually it just turned over, but this time I had to help it. Strange I know, and I'm not sure if this is related to the problem I'm having now, but before that week it never needed my help. Any thoughts?

This radio station was renamed Krenzy in honor of the last American hero to whom speed means freedom of the soul. The question is not when he's gonna stop, but who is gonna stop him.

grinders_18

Ok, so now after talking to 3 different GM shops, after describing my problem to them...they all jump at it being a Crank Position Sensor being bad. So here's my question: can we replace it without jacking the engine forward? Last time I did it I had the engine rolled forward..can it be done as it sits or not?

This radio station was renamed Krenzy in honor of the last American hero to whom speed means freedom of the soul. The question is not when he's gonna stop, but who is gonna stop him.

mfewtrail

Quote from: grinders_18 on May 18, 2007, 11:37:38 AM
Ok, so now after talking to 3 different GM shops, after describing my problem to them...they all jump at it being a Crank Position Sensor being bad. So here's my question: can we replace it without jacking the engine forward? Last time I did it I had the engine rolled forward..can it be done as it sits or not?

You can see it from the top, but I doubt you can get to it unless you have really skinny arms...even then, it would surely be a pain in the ass. Just rotate the engine forward or remove the alternator(with its bracket attached) and set it aside(don't forget to disconnect the negative battery terminal before removing the alt ;) ).
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP

GutlessSupreme

x2 on removing the alt and rotating, should be no problem to get it. which one has the tendency to break, the CPS or knock? be careful with either, it'd be a bitch to get out if it breaks.
-Tony
gtsdurango.net
'04 Dakota SLT Quad Cab V8 AWD/4x4 - current daily
'90 Turbo Grand Prix STE - Crane H260 Cam, Getrag 282 Swap, 1.6 Rockers, Homebrewn Mildly Ported/Polished Heads/Intakes, Intrax Front Lowering Springs, KYB GR2s, 34mm Sway Bar, CS FSTB, AWeb RSTB, ES Poly Sway Bar Bushings, Cooper Cobra 245 - I'm working on it...
'92 Gutless Supreme SL - Dead
'90 Turbo Grand Prix - RIP 6-15-05

grinders_18

Knock sensor has the tendency to break...so can I just remove the alternator and not roll the engine forward? Or do both?

This radio station was renamed Krenzy in honor of the last American hero to whom speed means freedom of the soul. The question is not when he's gonna stop, but who is gonna stop him.

TGP Nick

I was looking through the TGP service manual, and it looks to me like the crank position sensor might be causing our problems... it causes the exact symptoms/problems we're having, so we should probably replace that...
Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT

TGP Nick

#44
Well, we replaced the crank position sensor and it fired right up!  Kyle started driving it back to his place, and it is acting up...

It shakes badly at idle, and is now completely gutless... it literally takes FOREVER to do 0-60, even with it floored...  He called me and said the check engine light came on, but he checked for codes and no codes came up...  He's gonna try it again if/when the check engine light comes on again...

Any ideas of what may be causing this?
Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT