Engine Speeds by itself...
Senior Member
Joined: Apr 2017
Posts: 183
Likes: 68
From: Linkoeping
I came across this Technical Bullentin and thougt of this thread..
https://www.jaguarforums.com/forum/a...e-breather.pdf
Why not check the simple things first? The text mentioned that if not doing this, driveability issues could occur. /E
https://www.jaguarforums.com/forum/a...e-breather.pdf
Why not check the simple things first? The text mentioned that if not doing this, driveability issues could occur. /E
Senior Member
Joined: Jun 2010
Posts: 927
Likes: 223
From: Wellington, New Zealand
The cruise control on AJ16's (97-99) was vacuum operated, but the later AJ27's (00-03) are electronically controlled.
Omgimali's car is an 01, so it won't be that. Although a vacuum leak somewhere could still be confusing the ECU
Omgimali's car is an 01, so it won't be that. Although a vacuum leak somewhere could still be confusing the ECU
Last edited by grandell; May 3, 2017 at 05:54 PM.
The cruice control on these cars are operated with the help of vacuum taken from the intake manifolder. Two valves are working togeather in order to balance a controlled leak that allows a vacuum to build up and act, more or less, on membrane in that "can" that protuds up at next to the thottle housing. On a LHD they are located under the black panel on the aft left side in the engine bay.
It is quite likely that a leak there somewhere or if the valves are not woking properly, migth cause the rpm to become nervous..
Make sure the black, plastic spagetti sized pipes are fitted properly everywhere, but be careful not to crack them.. they have after 20 years of a life next to a hot Engine become brittle.
Does this problem occur with the cruisecontrol engaged?
/E
It is quite likely that a leak there somewhere or if the valves are not woking properly, migth cause the rpm to become nervous..
Make sure the black, plastic spagetti sized pipes are fitted properly everywhere, but be careful not to crack them.. they have after 20 years of a life next to a hot Engine become brittle.
Does this problem occur with the cruisecontrol engaged?
/E
There is no fault codes. I have yet to read the LTFT. I'll get to that tonight hopefully.
