Ajp

[AJP]

Thanks for the replies. Don't think it is clutch. Completely random. Sometimes on cold start, sometimes when putting in park after trip being all normal. Upstream 02 Sensor is alien to me. I am a car lover with just a general sympathetic working knowledge....nothing technical but happy to have it checked.Thanks again. Andrew

[awg]

Originally Posted by AJP

Hello,
My XJ has done nearly 300,000 km with no real problems. Last 6 months or so at lights and /or start revs to 1200 then later down to 200 revs. Two visits to mechanic include new fuel filter, new idle speed motor and throttle body clean. Still doing it.
Suggestions please. Andrew

best to state the year of yr vehicle, in "signature" makes it easier

ask the mechanic if any codes were read, as they "may" be set if anything that effects emissions, or its wiring is faulty.

otherwise it could be a bad distributor, fuel pump, wiring, TPS sensor, or quite a few other things unfortunately

[AJP]

Thanks for the tips. Will get everything checked that you suggested. I am new to this site and will get better at being more specific. FYI it is a 96 XJ 4.0 petrol sport. Thanks again.

[411vm]

I've got the same problem right now with my 98 xj it started about a week ago, I'm betting it's the throttle position sensor. I replaced mine with a $6 Chinese one from ebay to see if it would help with fuel consumption but it only lasted 6 months and now i've got the same problem. I have a spare TPS siting​ around so I will swap it and let you know if it fixes it, but it's a fairly common issue with xj's and easy to replace (two screws and one connection to unplug, takes 5 minutes)

Sent from my SM-G930F using Tapatalk

[AJP]

Excellent. Thanks. Looking fwd to your advice.

[LuluBelle]

Originally Posted by LuluBelle

if you have 300000k on the clock when did you last change your upstream O2 sensor ?? should be changed every 100000 try that ................
_____ooooo
/__l_l_,\____\,___
l_---l_l__l---[ ]llllll[ ]
_.(o)_)__(o)_)--o-)_)

easy job its on your exhaust pipe just after the manifold $40 ish do it your self unplug unscrew ......................

[AJP]

As you said...easy...found it and will replace. Thanks.