Grand Prixs Of North America • View topic - installed new intake gaskets, bad miss now. help.

View unanswered posts | View active topics

Board index » 1997-2008 Grand Prix Discussion » Supercharged 3800 L67/L32

All times are UTC - 6 hours [ DST ]

installed new intake gaskets, bad miss now. help.

Page 1 of 1

[ 8 posts ]

Previous topic | Next topic

Author

Message

66Satellite

Post subject: installed new intake gaskets, bad miss now. help.

Posted: Wed Feb 09, 2011 6:45 pm

Newbie

Joined: Mon Sep 06, 2010 11:09 am
Posts: 13
Thanks given: 0 time
Thanked: 0 time

I just got done installing new intake gaskets, plenum gasket, pcv valve, valve cover gaskets, water pump, and cam sensor on my 04 GTP. At first start up, the car missed really bad, like it was only running on 4 cylinders. I did the usual checks, everything checked out ok. check engine light was on with a P0300 code: misfires. I noticed it was puffing a lilttle sweet white smoke, so i thought maybe i screwed up the plenum gasket, so i took the supercharger back off. everything checked out ok. I went deeper, checking out the lower intakes gaskets..still found nothing, but bought new ones just in case. Checked all vacuum hoses, i have spark, fuel, etc. upon start up again, the car misses just as it did before.

Could this be a bad cam sensor? my thinking is if it was it wouldnt even start up.

Im at the end of my road with this car. ive had nothing but problems with it. Any advice would be greatly appreciated.

Top

CraiGTP

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Wed Feb 09, 2011 11:19 pm

GPONA GT Member

Joined: Sun Sep 07, 2008 9:36 pm
Posts: 196
Location: Chandler AZ
Thanks given: 0 time
Thanked: 0 time
Name: Craig

Did you change the oil after? Thats always a good idea...

_________________

http://WWW.AZGMPERFORMANCE.COM

Top

Kyle_99_gtp

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Thu Feb 10, 2011 1:51 am

GPONA VIP Member

Joined: Sat Dec 29, 2007 12:24 am
Posts: 9666
Location: Warren/Kent, Ohio
Thanks given: 10 times
Thanked: 4 times
Age: 21
Name: Kyle

This may seem too simple, but are the plug wires in the right order? I've mixed them up and I know others that have mixed them up as well.

_________________

Last edited by Kyle_99_gtp on Thu Feb 10, 2011 1:51 am, edited 1 time in total.

Top

66Satellite

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Thu Feb 10, 2011 3:41 pm

Newbie

Joined: Mon Sep 06, 2010 11:09 am
Posts: 13
Thanks given: 0 time
Thanked: 0 time

yeah...changed the oil and double checked the wires.

Top

thelongone13

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Thu Feb 10, 2011 7:16 pm

Moderator

Donating Member

Joined: Sat Dec 29, 2007 12:09 am
Posts: 8642
Location: On top of your mom
Thanks given: 5 times
Thanked: 10 times
Age: 26
Blog: View Blog (2)
Name: Mike Long

Vacuum leak, likely. Visually inspect all the vacuum lines as best you can.

_________________

2012 Ford Focus SE Sport
2012 MINI Cooper Clubman

I have ADHD and drive a Focus. Ironically.
Although gold dust is precious, when it gets in your eyes, it obstructs your vision.

Top

Kyle_99_gtp

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Fri Feb 11, 2011 1:02 pm

GPONA VIP Member

Joined: Sat Dec 29, 2007 12:24 am
Posts: 9666
Location: Warren/Kent, Ohio
Thanks given: 10 times
Thanked: 4 times
Age: 21
Name: Kyle

Or spray carb cleaner around the vacuum lines and LIM, if the idle changes you have a leak.

_________________

Top

66Satellite

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Fri Feb 11, 2011 2:30 pm

Newbie

Joined: Mon Sep 06, 2010 11:09 am
Posts: 13
Thanks given: 0 time
Thanked: 0 time

i did all of that already. no change.

Top

slow6

Post subject: Re: installed new intake gaskets, bad miss now. help.

Posted: Sun Feb 13, 2011 10:56 am

GPONA GTP Addict

Joined: Sat Dec 29, 2007 1:05 pm
Posts: 572
Thanks given: 0 time
Thanked: 1 time

Double check the plugs. Physically pull them and double check your gap. You might also double check the EGR tube. They will leak sometimes after reinstalling it in the LIM.

Did you spray carb cleaner around the fuel injector holes to check for leaks there?

_________________
1997 TGP

Top

Page 1 of 1

[ 8 posts ]

Board index » 1997-2008 Grand Prix Discussion » Supercharged 3800 L67/L32

All times are UTC - 6 hours [ DST ]

Who is online

Users browsing this forum: No registered users

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum