S TYPE 4 RUNS ROUGH AT LOW RPM WHEN HOT

2000 Jaguar XJS

Tiny

malbert

March, 1, 2007 AT 4:47 AM

I have a 2000 Jaguar S Type 4 with 160,000 miles. The engines runs fine when it is cold. After the engines has warmed up, it misses and run rough at lower RPM. If I increase the RPM either by down shifting the transmission or by accellerating, the problems goes away. When I return to cruising RPM, the problem returns. The yellow engine light is on. If I floor the gas pedal and bring up the speed to 75-80 MPH, the light will either blink for a while or go off entirely. When I resume normal speed and RPM, the light comes on again, as does the problem. Any suggestions?

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Running Rough

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1 Answer

Tiny

Jack42

March, 1, 2007 AT 7:57 AM

First it needs to be scanned for trouble codes. The check engine light is the PCM's way of telling you there is a problem

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