Rough start/idle

Lately my 2000 XJ has been running a little rough when i first start it up. It used to do this every once in a while, but now does it pretty consistently. I'm able to start it, but then it runs very rough for a minute or two and acts like it's going to die (sounds like its gasping for breath almost). I give it gas but that doesn't do anything usually and i just have to wait a minute.

it usually only does this after i've been driving it for a while. the oil pressure is also very low when i first start it up. not sure what's going on with it... maybe something with the oil sending unit, spark plugs, fuel backdraining mechanism or camshaft positioning sensor? Any thoughts?

no one has any thoughts?

This is actually more suited to the OEM tech forum.

Search for heat soak.

I have a 99 and it does the same thing when I first start it. Usually the first start of the day but it has that same "huffing" idle. I have already solved the bak drain issue with a one-way inline check valve but that didnt help. I lso have to cycle the key a few times to get it to start so I know its fuel pump time. My point is that you are having the same issues I am and probably need to rebuild/replace your fuel pump. You can get the kits on EBay for around $80 shipped. Hope that helps...:wave1:

It might not be the same issue as yours. 00-01 had a heat soak issue that had a TSB to put a heat shield on the #3 injector. Yours is from a cold start, where is is from a hot start.