Jump to content
Forums Gone... but not forgotten!
Pontiac of the Month

Shakercars's 1972 Trans Am

2019 August
of the Month

  • Welcome!

    Welcome to Forever Pontiac, full of great ideas for Pontiac performance, maintenance, or for peer-to-peer assistance from Professional and DIY mechanics. Also, compete in our Pontiac monthly competitions. Please register if you'd like to take part.

Sign in to follow this  
1BADG6GT

My (almost) 99 Jeep Grand Cherokee Laredo

Recommended Posts

I wanna take this Jeep off my dads hands for a few reasons...

1. I need a second car (my wife's tranny took a dump) we've been using the 6 ALOT!!!

2. I can keep it as my dd after I get the wifes tranny fixed

3. I can get it in payments from my pops (don't have THAT option anywhere else cause my credit = NO BUENO!!!

4. Tranny on the Jeep has recently been rebuilt

Now the only bad thing is that after my dad serviced the engine and put everything back the way it was... for those who don't know it had a blown piston (like a hole ontop of a piston... It now runs good and shifts good but shakes while at idle... timing and pressure have been check and seem to be fine.

What could this be? Any help is appreciated...

Almost forgot here are the pics...

1273241190.jpg

1273241391.jpg

1273241228.jpg

1273241370.jpg

Share this post


Link to post
Share on other sites

Tired of these Ads? Register Today!

I'll look into it later and let u know

Share this post


Link to post
Share on other sites

I'll look into it later and let u know

:lol2:

Share this post


Link to post
Share on other sites

I was talking the jeep guys I know they r saying the hole motor is probably bad unless he redid the hole motor

What year?? What motor??

Check the heads for cracks

You can't just fix one piston there has to be something that's caused it

Share this post


Link to post
Share on other sites

I was talking the jeep guys I know they r saying the hole motor is probably bad unless he redid the hole motor

What year?? What motor??

Check the heads for cracks

Damn THAT's not good!

99 I6 4.0

Share this post


Link to post
Share on other sites

Was the hole motor redone? Or just that piston?

Share this post


Link to post
Share on other sites

Was the hole motor redone? Or just that piston?

Sadly NO just THAT piston...

Share this post


Link to post
Share on other sites

Well start looking for a cracked head or something.. Local auto part stores carry a crackedetector lit but what I'm hearing is the motor is most likely motor is shot

What cylinder was it??

Share this post


Link to post
Share on other sites

I don't know what # it is but it's the first one closest to the radiator... here's a pic...

1273246782.jpg

Share this post


Link to post
Share on other sites

They said it's probably the head

If you get 95 heads they are better higher nickle content and better flow

99-01 had casting problems.

Share this post


Link to post
Share on other sites

Damn... :lol2:

Share this post


Link to post
Share on other sites

Sorry man!

I helped with diagnosis right away lol

Share this post


Link to post
Share on other sites

Sorry man!

I helped with diagnosis right away lol

Gee... thanks... :lol2: No really thanks for your help. :lol2:

well guess another sucker...err... buyer is gonna have to deal with it then... :D

Share this post


Link to post
Share on other sites

No problem loL

Share this post


Link to post
Share on other sites

So were gonna replace the heads on the jeep... What years are compatible so I can look for one at the jy? I know you mentioned 95... Is it 95 and above that fit the 99's?

Share this post


Link to post
Share on other sites

Yes. Get the 91- 95 are the better ones

99-01 had casting problems

MAKE SURE YOU CHECK REST OF ENGINE AND MAKE SURE NOTHING ELSE IS THE PROBLEM.

IT MIGHT JUST BE THE ENGINE IS SHOT BC OF THE PROBLEM!

Share this post


Link to post
Share on other sites

My dad checked the compression and it was bad on the piston he replaced so he checked the heads and it has a crack... It runs smooth from a cold start but as soon as it gets hotter it starts to shake...

Share this post


Link to post
Share on other sites

Then its probably the head

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

Tired of these Ads? Purchase Enhanced Membership today to remove them!
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.