The GTP is running right...

[99PONTIACGP]

So, I bought my 97 with a blown motor and put an 02 motor in it. The mechanic put the motor in and got it running. There was a gap between the stock manifold and the exhuast so the mechanic really couldnt test the driveability and how well it ran. I went to an exhaust shop a month later and they fixed the gap with piping BUT the car doesnt drive very well. When I get on it, it really doesnt go anywhere. It punches a little bit but nothing like a supercharged car should perform like. After some investigating under the hood, there are some connectors that didnt get connected, Im guessing this is the problem? I connected what I could and believed was correct. Today, I got another box of parts consisting of the MAP sensor and other bolts and stuff. Im pretty sure I connected the MAP sensor correctly and its still the same. Arent the connectors different for the engine from 97 to 02?

Where do I start?

What do you guys think?

The video isnt the best in the world but you sort of get an idea of what im talking about. I was coasting in 1st gear and I floored it and you see how slow it accelerates.

Click to read more...

 

[MuffHugger]

I don't understand your situation with the exhaust. Could you explain a little better or get pics? Secondly, I would plug in all the electrical connectors and install your MAP sensor. Then I would plug in all the vacuum lines. You already have a vacuum leak because of the disconnected MAP. Check all that and then get back to us.

 

[99PONTIACGP]

Sorry... the previous owner had headers on the car and took them off with downpipe. When we finally got the motor in and running, there was a gap from the stock manifold to the 3inch exhaust.
You would say a vacuum leak? I plugged in the MAP sensor and it was still the same.

 

[MuffHugger]

What codes are the PCM throwing?

 

[99PONTIACGP]

I havent checked lately probably the O2 sensore since I havent connected it since there isnt a cat

 

[bluegpgtp]

wow that thing is SLOW. i would try to get my hands on a scanner if i were you. need more details. how is it driving when cruising? is it idling OK? Do you have any history on the motor you put in it? Did you do a compression test before installing the new motor? and if the mechanic forgot to plug a bunch of stuff back in i would probably find a new mechanic. GOOD LUCK!

 

[99PONTIACGP]

well...It doesnt drive too bad when just cruising BUT It idles at about 1,000 rpms. From what I understand on the motor, it has 35k on the motor and there was a recall on the fuel rails and they started on fire. Not a lot of damage just the wiring harness melted and the outside of the valve cover was messed up. Also, the mechanic did the swap for free so I cant be too upset.

 

[DanJ]

The high idle makes me think vacuum leak. Have you double checked all the vacuum line fittings for cracks and that they are actually routed the correct way?

 

[99PONTIACGP]

Yeah, my brother tells me the same thing for the vacuum lines. I bought the Chilton book for Grand Prix and I dont think its very detailed for the vacuum lines. If its most likely the vacuum lines, ill concentrate on those.

 

[bluegpgtp]

as far as a vacuum leak goes. you can spray the vacuum lines with starting fluid or wd 40 or.... if the idle changes you found a leak.

 

[02BlueGT]

I havent checked lately probably the O2 sensore since I havent connected it since there isnt a cat

Please tell me that you are only talking about the rear O2, the front should be plugged in, the front O2 can't tell if you have a cat or not, and that is the O2 sensor that is required for your car to run "normally".......The maf and TB are different in a 97 than a 99+, same connector but different shape in isde the intake, so you may need an adjusted maf table

 

[99PONTIACGP]

Do i need to get a newer TB? that TB is from the 97 motor.

 

[Alacran]

the vacuum lines and connections are different from 97 to 02. You probably have a vacuum leak around the EVAP system. Did you use any of the 97 top end? Its hard to tell b/c i dont have a 97 but you could be dealing with the differences of 97 and 02 vacuum plumbing.

 

[99PONTIACGP]

Well, the owner took off the top end stuff and just left me the bad block. I had the complete motor out of the 02. I had to buy the alternator, throttle body and battery off of the owner because I needed those parts after the fact.

Does anyone have a 97 GTP I could compare too?

My brother has an 02 that Ive been comparing to but the 97 seems to be different in some aspects.

 

[GraFFix]

<-- old owner

Hey, if you need some help Id be happy to take a look at it. Im pretty good with the 97 stuff since I owned that car for like 8 years. Not sure if Ill be any help with the new motor but I dont mind taking a look at it. you got my number give me a call I can stop by your place to check it out if you want.

 

[MuffHugger]

Was this car driving west on Rt. 34 (Ogden) in Downers Grove at about 10 am today?

 

[99PONTIACGP]

Thanks Joe, that would be awesome. Ill let you know, maybe next week sometime because im going to UofI for unofficial so ill be leaving tomorrow after work, I appreciate it though.

Nope, I was nowhere near Ogden, the car stays in front of my house.

 

[99PONTIACGP]

So, I went for a drive yesterday, trying to fix the driveability issue, and the car died out and wouldnt start again. It wouldnt even turn over. Im guessing the starter? The tow truck came and picked up the car this morning. I just got off the phone with the mechanic and he said its definitely not a vacuum leak...????

 

[MuffHugger]

motor locked up?

 

[Mickey]

Jesus, one issue after another.

 

[99PONTIACGP]

Jesus, one issue after another.

Yeah, tell me about it

 

[curado]

Man that sucks. I want to give my input in case anyone hasn't already helped you with this.

Is there anybody that can check your sensors with a scanner? The big 3 are the MAP, MAF and TPS. If you have a vacuum leak in the MAP circuit it will drive like piss.

Try unpluggin the MAF entirely. I'd bet that the problem will either go away, or get tons worse. If it gets worse, then the MAP is definitely to blame.

PM me if you want my phone #. Oh, and other possibility strikes me: Has that motor been gone through recently? Possibly hydro locked due to wrong torque / bad sealing gasket? LMK..

 

[99PONTIACGP]

Man that sucks. I want to give my input in case anyone hasn't already helped you with this.

Is there anybody that can check your sensors with a scanner? The big 3 are the MAP, MAF and TPS. If you have a vacuum leak in the MAP circuit it will drive like piss.

Try unpluggin the MAF entirely. I'd bet that the problem will either go away, or get tons worse. If it gets worse, then the MAP is definitely to blame.

PM me if you want my phone #. Oh, and other possibility strikes me: Has that motor been gone through recently? Possibly hydro locked due to wrong torque / bad sealing gasket? LMK..

Well, it drove like garbage then the mechanic gave me a bag of parts which included the MAP sensor and it still drove the same once I installed it. My issue was I wasnt sure if I plugged everything in correctly.
Now, the current issue is that the oil pump went out and now my motor is locked up. The mechanic couldnt even turn the motor with the 3ft pry bar. There is something going on inside the motor and im not sure if I want him to pull it out and investigate the problem.

 

[curado]

Pop the spark plugs out. If water drains out then you were hydro locked. It will act seized if that was the case.

Otherwise, was there even oil in it? If the mechanic forgot to put some in, I'm sure it's got some now..

 

[99PONTIACGP]

Pop the spark plugs out. If water drains out then you were hydro locked. It will act seized if that was the case.

Otherwise, was there even oil in it? If the mechanic forgot to put some in, I'm sure it's got some now..

Where do I go from there if its hrdro locked?
I had to drain some of the oil on Saturday, He had about 2-3 quarts too many in the engine