94 Jimmy Vacuum problems

10-02-2004, 06:41 PM
I've got multiple systems acting up and think the vacuum system must be fried.

Criuse control, won't set at all.

A/C / Heat. Dampers won't adjust. All air blows to floor and Air intake closed.

Power brakes. If engine is at idle, power brakes aren't power.

Any Ideas where to look for the problem. Is there a vacuum tank / pump to have vacuum when the engine is at idle or off?


10-22-2004, 08:02 PM
you can look on the back of the plennum(intake) there is were the vacumm line hooks up..I similar problems and reconnected and it worked great

10-23-2004, 04:05 PM
There are vacuum lines going from the rear of the intake to the brake booster and to a T where is connects to a vacuum ball in the drivers corner.

Check all the hoses for cracks etc....

You need to actually go out there and look bro, we can't tell you whether they are broken or not.

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