troubles with the start

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Jul 15, 2016 | 10:20 PM

#21

Don B

Joined: Feb 2014

Posts: 20,532

Likes: 15,306

From: Crossroads of America

Quote:

Originally Posted by Marcus Stevenson

Today first time ever, my 1996 XJ6 Sedan had trouble starting. Hot day and car was sitting on flight line at work all day. Tried to start and took about 3 long times of cranking before it finally started. Once I got home, I was sitting in car while it was idling and it stalled out 2x. I was able to get started, but wasnt consistent to start up immediately. Where do you recommend I start for trouble shooting?

Hi Marcus,

One quick check you can do the next time the engine doesn't want to start is to watch the tachometer while cranking the engine. If the needle doesn't move, suspect the crankshaft position sensor (CKPS). The tach should show 200-300 rpm while cranking.

I would also suggest that you have the car scanned for any stored fault codes that may hasten the diagnosis.

If no codes are stored, how long has it been since your last tune up (plugs, fuel filter, air filter, etc.)? Sometimes hard starting can be caused by a combination of multiple components not functioning at 100%, especially in extreme conditions like high ambient temperatures.

If a good tune up has been done in the not-too-distant past, the many suggestions collected by aholbro1 in this thread may be helpful:

https://www.jaguarforums.com/forum/x...ngines-120221/

Cheers,

Don

Last edited by Don B; Jul 18, 2016 at 10:39 AM.

Jul 17, 2016 | 03:03 AM

#22

countyjag

Veteran Member

Joined: Oct 2014

Posts: 1,092

Likes: 539

From: Scotland

Yet another odd set of symptoms cured by a crank position sensor. I am starting to think that this should be a mandatory first step in diagnosing every engine related problem!