Has anyone out there investigated the exchangeability of throttle bodies between the 1997 XK8 4 litre motor and the Mercury LS 3.9 litre?
Curious. (for future reference!)

Submitted by talburkett@gmail.com on Thu, 11/07/2013 - 23:41

Yes, Josh, I read your earlier posts about TB issues. Mine hasn't acted up as badly as yours, but I have 107K on the speedo and have started to feel issues of bogging down on occasion. feels like a "flooding" of fuel when trying to moderately accelerate. I've thrown no codes yet and the issue clears itself in a few seconds. It just seems to me that as the engines were engineered by the same people (Ford/Jaguar) there might be an similarity of throttle body controls.

Fact is, as long as this issue has been a problem I'm guessing they are different. I was just hoping for confirmation from a more experienced source.

Submitted by joshbartlett@r… on Thu, 11/07/2013 - 18:28

I sure would like to find someone who would be willing to find out!
I have an XK-8 that has had two throttle bodies replaced in 135, 000 miles. I'm told by the bba-reman people that the vaccuum operated ones like the one I have are not rebuildable by them.
I would donate my old (presumably faulty) to anyone who would reverse engineer it and figure out how to deal with the faulty ones.
Any interest at the club level??????