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1999 Jeep Wrangler vaccum leaks

Tiny
KAYA
  • MEMBER
  • 1999 JEEP WRANGLER
  • 4.0L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 85,000 MILES
My jeep idles, it will go 500ft or so then stalls it wont start again for about 15-20 mins then it repeats it again. I pluggin in a scanner to get the code it says I have a H vac leak. If its possible how do I find it an fix it
Tuesday, February 3rd, 2015 AT 7:18 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
What's the exact fault code number? I can't tell if that means a high vacuum leak or a leak in the heating, ventilation, and AV (HVAC) system. A problem in either system won't cause stalling.

Stalling as you described is typically caused by a failure of the crankshaft position sensor or the camshaft position sensor. Those two sensors commonly fail by becoming heat-sensitive, then they work again after they cool down for up to an hour or two.
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Tuesday, February 3rd, 2015 AT 7:26 PM

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