XJ XJ6 / XJR6 ( X300 ) 1995-1997

x300 Throttle Body Issues

 
  #1  
Old 05-06-2019, 07:44 PM
Senior Member
Thread Starter
Join Date: Jun 2016
Location: Greater Toronto Area
Posts: 118
Received 12 Likes on 8 Posts
Default x300 Throttle Body Issues

Hey all,

So, I think I may have throttle body issues on my car (96 naturally aspirated straight six), but I just wanted to confirm. Occasionally I would be starting up the car (particularly in cold damp weather) and the accelerator peda; would be stiff, and it wouldn't rev the engine. I would then have to tap the throttle, usually once or twice, for it to resume normal operation. But then today, as I was driving, the pedal got stiff again and it stopped revving, which proved to be a bit scary, given I was driving on the road at the time. I pulled off to a gas station, popped the hood, and was able move the throttle body by hand. That allowed me to limp my kitty home.

When pressing the accelerator pedal and moving the cable by hand, there is a noticeable stiffness, but for whatever reason, if tap the pedal a few times, the engine will rev. Does it sound like I need a throttle body cleaning or is something more serious at play?

Thanks
 
  #2  
Old 05-07-2019, 04:42 AM
Senior Member
Join Date: Feb 2012
Location: Manchester UK
Posts: 742
Received 520 Likes on 324 Posts
Default

There are 3 different parts in play here. The Pedal, the Cable, the Throttle Body. You need to separate them and operate them independently to find out which one is actually causing the stiffness. Then go from there.
 
The following 3 users liked this post by b1mcp:
93SB (05-22-2019), Ashton Dimovski (05-07-2019), Don B (05-07-2019)
  #3  
Old 05-07-2019, 05:24 AM
Vee
Vee is offline
Veteran Member
Join Date: May 2010
Location: Arlington, VA
Posts: 2,721
Received 611 Likes on 508 Posts
Default

If you have to ask whether youíre throttle body needs cleaning....your throttle body needs cleaning.

Although thereís a very good chance thatís your problem, The previous post made too much sense.

in any case, clean the throttle body.
 
The following 3 users liked this post by Vee:
93SB (05-22-2019), Ashton Dimovski (05-07-2019), Don B (05-07-2019)
  #4  
Old 05-07-2019, 08:31 AM
al_roethlisberger's Avatar
Veteran Member
Join Date: Mar 2014
Location: Sanford, NC
Posts: 3,735
Received 615 Likes on 467 Posts
Default

Do you have traction control? The TC module can be an issue too.

But yes, I'd start with cleaning the TB, which fortunately on the XJ6 is an easy job.
 
The following 2 users liked this post by al_roethlisberger:
Ashton Dimovski (05-07-2019), Don B (05-07-2019)
  #5  
Old 05-07-2019, 09:09 AM
Join Date: Dec 2009
Location: Decatur,TX
Posts: 7,867
Received 4,126 Likes on 2,703 Posts
Default

Jaguar addressed this issue several decades ago.

bob
 
The following 2 users liked this post by motorcarman:
93SB (05-22-2019), Ashton Dimovski (05-07-2019)
  #6  
Old 05-07-2019, 11:09 AM
Jagboi64's Avatar
Veteran Member
Join Date: Jan 2013
Location: Calgary
Posts: 2,143
Received 1,094 Likes on 814 Posts
Default

Sometimes the "boot" that holds the cable into the traction control module can break, and then the cable binds. If the throttle turns smoothly by hand, follow the cables back and make sure there are no kinks etc. The traction control module is on the right side of the engine bay.
 
The following users liked this post:
Ashton Dimovski (05-07-2019)
  #7  
Old 05-07-2019, 05:18 PM
Senior Member
Thread Starter
Join Date: Jun 2016
Location: Greater Toronto Area
Posts: 118
Received 12 Likes on 8 Posts
Default

Awesome thank you all so much - Iíll let you know what it turns out to be.
 
  #8  
Old 05-20-2019, 05:43 PM
Senior Member
Thread Starter
Join Date: Jun 2016
Location: Greater Toronto Area
Posts: 118
Received 12 Likes on 8 Posts
Default

Well everyone, you were right. It was the throttle body. Really dirty inside. Cleaned her all up and now? Excellent driving. She purrs like a kitten and roars like a lion - the perfect combination for a Jaguar.

Thanks all for your help!
 
The following 3 users liked this post by Ashton Dimovski:
93SB (05-22-2019), Scotlad (05-20-2019), SleekJag12 (05-24-2019)
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
al_roethlisberger
PRIVATE For Sale / Trade or Buy Classifieds
2
05-08-2017 04:23 AM
Ali Khalili
XJ XJ6 / XJR6 ( X300 )
5
04-02-2017 05:55 PM
juha_teuvonnen
XJ XJ6 / XJR6 ( X300 )
5
12-17-2014 09:35 PM
jam1white
New Member Area - Intro a MUST
6
09-07-2011 09:00 PM
Udall30
XJ XJ8 / XJR ( X308 )
5
04-28-2011 09:10 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: x300 Throttle Body Issues


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: