Question about 2002 Jeep Liberty
I can't offer a definite fix there but I can offer some thoughts. First, Leaking calipers are extremely rare and I seriously doubt the validity of that repair.
The first thing I'd look at is the brake booster. If it has an internal leak or the check valve is bad, it can affect the way the brakes are applying. A vacuum leak can also cause the engine to stall from a lean condition. I'd also look at the vacuum supply line to make sure it is firmly attached and intact as well as having adequate vacuum present. Low vacuum can also cause the a/c to malfunction as many of the controls are vacuum operated. Other items worth looking at are the brake flex hoses to the front wheels. If internally blocked, it can cause the calipers to remain applied. I'd also have the catalytic converter checked for flow. If it is partially obstructed it can cause low engine vacuum and many other symptoms. There is an outside chance that the abs controller may also be acting up, but I don't think so. And, no...many of these items will not set a code.
As I said, this isn't a "cure" but may point you in a better direction for testing.
Posted on Jul 06, 2010
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Posted on Jan 02, 2017
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