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Old October 19th, 2020, 18:18
gmcchamp99 gmcchamp99 is offline
NAXJA Forum User
Join Date: Oct 2020
Location: Connecticut
Posts: 9
Re: 96 XJ Hesitation when hot & cant rev

The new distributor that I purchased from O'Reilly's was defective right out of the box. I happened to have another fromnl a different 4.0L and the jeep fired up. So far, 50 miles round trip and no loss of power or inability to rev. Seems like a regular old spunky 192k 4.0. It does rev a bit high, it stays around 1,100 or so hundred RPM. Im suspecting the throttle position sensor and or map is the culprit. I checked all vacuum lines as well as the intake/exhaust gasket and the exhaust manifold. Oddly enough no cracks in the manifold. Looks like someone patched it but did a real bang up job.
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