Question about 1986 Jaguar XJSC
1988 Jaguar XJ-S 5.3 liter V12 coupe - My XJ-S will drive fine until it warms up. After it warms up, it will only go 37 mph...anything over that and the engine misfires and wants to die. I can press on the accelerator gently and it will reach about forty, but if I press any harder the engine dies, unless i let off a bit and it will go back to about 40 mph. It also kind of has a hard time starting that is related to the misfiring problem...It will turn over but not start. after a few times it will start and idle. Could this be related to a tune-up, temperature sensors, or 02 sensors? Anything would help! Thank you.
Have you tried a new coolant sensor?it is poss it is telling the ecu its still cold so its chucking more fuel through. also get a block tester and test cylinder head
Posted on Dec 23, 2008
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 25, 2015 | 1989 Jaguar XJS 5.3
Mar 16, 2015 | 1988 Jaguar Xj Series
Aug 24, 2014 | 1988 Jaguar Xj Series
Apr 05, 2010 | 1988 Jaguar Xj Series
Feb 23, 2010 | 1988 Jaguar XJ6
Jan 23, 2010 | 1997 Jaguar Xj Series
Sep 30, 2009 | 1988 Chevrolet Suburban
Jan 06, 2009 | 1996 Oldsmobile Cutlass Supreme Coupe
Nov 16, 2008 | 1988 Honda Civic 2 Door
445 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: