just rebuilt a 88 xj 4.0 high idle low torque ????????

[dee77]

so I just got my xj together and im wondering if anyone else has into the same problem as me? it drives but has low power / torque

 

[greg92jeepxj]

Welcome to JEEPZ.com. Sounds like you've got a vacuum leak from the intake manifold . Your losing power and the idle is being stepped up by the pcm to compensate for low vacuum. Check the intake manifold torque and if you suspect any leak(s) from the intake you can try to,spray choke cleaner at the intake where it bolts to the cylinder head to see if the engine races . That should confirm a vacuum leak. Check to see if the manifold is properly seated to the cylinder head . Do this before you attempt to re-torque the mounting bolts.

 

[dee77]

Welcome to JEEPZ.com. Sounds like you've got a vacuum leak from the intake manifold . Your losing power and the idle is being stepped up by the pcm to compensate for low vacuum. Check the intake manifold torque and if you suspect any leak(s) from the intake you can try to,spray choke cleaner at the intake where it bolts to the cylinder head to see if the engine races . That should confirm a vacuum leak. Check to see if the manifold is properly seated to the cylinder head . Do this before you attempt to re-torque the mounting bolts.

Ok Thanks I'm going to check it out

 

[69jeepcj]

let us know how it go,s.

 

[dee77]

let us know how it go,s.

Yes I will my mechanic friend is goin to take me to the junk yard to find the missing vacuum hoses an see what we are missing

 

[dee77]

Yes I will my mechanic friend is goin to take me to the junk yard to find the missing vacuum hoses an see what we are missing

So today I was bored an started messing around with my jeep an found the missing vacuum hoses an my jeeps running alot better thanks for the help