Question about 1995 Jaguar XJ6

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My 95 XJ6 won't stop racing. I have no vacuum leaks. I can lower I.A.C motor with tool to make Idal but when car is turned off and restarted it starts racing again.I replaced E.C.M but no change.

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  • foreignloren Oct 06, 2009

    Hi there, I all ready check The cam sensor and is showing a signal to the ECM. Thanks for input.

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This could be camshaft position sensor is most likely the cause

Posted on Oct 06, 2009

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Posted on Jan 02, 2017

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1 Answer

Accelerates when stopped


hot or cold. ? engine?
what year.?
what engine.?
what transmission, my guess is the A/T (with M/T the clutch is engaged and far safer car, as such)

my 3 jeeps with 4.0 all loved to race the idle. all M/T so is my 08
the ISC loved to stick, (PCV/EGR black cloud of death caused)

Some jeep engines, that are SPEED DENSITY based.
that is a MAP sensor not MAF based.
will race for the following reasons (all are classic and common)
1; any air leaks to the plenum. (aka Induction vacuum leaks)
2: ISC stuck open and jammed.
3: TPS bad.

The ECU knows its racing for sure. RPM.
and is for sure trying to lower RPM,
but cant, for all the reasons above.
that is how it all works.
The iSC is the idle speed control servo system.

the tests are easy, but takes tools.
got tools?
if not??, its , SHOP TIME.

Feb 18, 2014 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Idal adjustment


The idle is computer controlled and not adjustable. You may have a intake manifold vacuum leak that is the cause of the high idle.

Jun 03, 2013 | 1988 Chevrolet C3500

1 Answer

1990 jaguar xj6. Car wont start. may be electrical.


not sure if any off this will help you o The starter won't crank. If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine. Most commonly this could be caused by a dead battery; here is How to check the battery. ... The ignition switch could be bad - it's a common problem.13 Aug 2013

Why a car won't start - troubleshooting tips - Samarins.com

www.samarins.com/diagnose/ut...or try this link. Car wont start Google Search

Oct 20, 2017 | 1990 Jaguar XJ6

1 Answer

88 jaguar xj6 turns off, and sometimes on again all by itself


Given the ease of re-start I would check the ignition switch unscrew the shroud behind the wheel to expose the switch and with a volt meter find the perminant live and the switched ignition, sta rt and joggle the wires and see if you can get it to fail.

Jun 01, 2009 | 1988 Jaguar XJ6

1 Answer

Jag XJ6 revs are too high


If you have replaced the Throttle postion sensor (TPS) or have replaced the battery, sometimes the car will need an engine set up.
I had the same problem with my xj6 and I did an engine set-up and it has been fine for the last 2 years. Also with the idle doing what it did it had a very harsh shift when driving and changing gears.
The BAD news is the dealer has to perform the engine set-up using the WDS (worldwide diagnostic system) The set-up will set the kick down switch, it will calibrate and set the TPS and also perform an oxygen sensor orientation test.
With the set-up it will allow the TPS sensor to be adjusted to the correct factory specs.
Sorry you can't do this your self.
This is obviously if there is no vac leaks and the throttle butterfly is set to 2 thousands of an inch. (gap on the side when closed throttle) check with a feeler guage.
JPTCAT

Jan 20, 2009 | 1995 Jaguar XJ6

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