I love my Jag, but...
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I love my Jag, but... - 6/22/2008 11:21:13 AM
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DubiousChrisJ
Posts: 2
Joined: 6/22/2008
Status: offline
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''lo, gents!
I recently acquired my first Jag, a 1990 XJ40 in remarkably good condition for a remarkably low price. Now I understand why. :D It does seem to have some of the electrical problems you gents have discussed at length, and I have no problem with the idea of this being a long term project car. It''s a beautiful car with an awesome ride.
Today, after three weeks of driving around with the slightest bit of shudder around 1000 RPM''s, it started doing something which has always scared me on previous projects. When I accelerate, it chokes, and almost dies out. I know this is typically an air / fuel mix problem, and in the past has entailed replacing an O2 sensor or a PCV valve. Can someone offer a suggestion as to where I start troubleshooting this issue?
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RE: I love my Jag, but... - 6/22/2008 11:26:13 AM
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cadillac
Posts: 2239
Joined: 3/23/2007
Status: offline
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Welcome to the forums 
You should also replace the fuel filter . I believe our tech guys know better for sure
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RE: I love my Jag, but... - 6/23/2008 12:45:14 PM
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ken@britishparts.com
Posts: 1367
Joined: 5/11/2007
Status: offline
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Still wide open on this one. Could be 02, air flow meter, stepper motor, clean out throttle body, crank position sensor, etc.
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Ken Karr
Motorcars, Ltd. 800 338 5238 x626
www.motorcarsltd.com
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RE: I love my Jag, but... - 6/25/2008 4:21:05 PM
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DubiousChrisJ
Posts: 2
Joined: 6/22/2008
Status: offline
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Sorry for my slow response. I found out that I can''t access the site from the office due to a restriction on the firewall to the category ''Automotive''. Damn IT and their failure to account for my need to post about my Jag. :D
I''ve replaced the air filter and cleaned the fuel injectors. Still ahead on my short term plan are the O2 sensor and PCV valve. However, aside from that one afternoon, she hasn''t repeated this behaviour. This must be one of the intermittent bugs I''ve seen several of you posting about.
It will probably take me 4-6 weeks to work my way through the standard list of high mileage maintenance items I like to do on any car over 100K Miles, so I''ll keep you posted.
I did look at Jaguar-Lovers, by the way, and although they have quite a bit of information, the format of that site is a bit confusing. I''m much more familiar with this interface.
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RE: I love my Jag, but... - 6/26/2008 9:13:33 AM
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ken@britishparts.com
Posts: 1367
Joined: 5/11/2007
Status: offline
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Add to your list of normal maintance to clean the crank position sensor. It''s at the front of the timing coving at the harmonic balancer. It easily picks up road dirt and doesn''t read correctly. Just wipe it down. No big deal. Probably don''t even need to remove it. Just get a rag in around the head.
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Ken Karr
Motorcars, Ltd. 800 338 5238 x626
www.motorcarsltd.com
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RE: I love my Jag, but... - 6/27/2008 9:12:01 AM
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93xj6
Posts: 921
Joined: 2/25/2007
Status: offline
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Mine did that in the winter a lot. I got new fuel injectors put in, and that''s when it started doing that. I just stopped driving it for a while because I was scared, and than it hasn''t done it to much since. I think it was mainly caused by the cold weather, cuz this was around when it was -5 degrees average in Chicago for a good month.
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93 jaguar Xj40
2000 xk8 convertible
http://i9.photobucket.com/albums/a70/kingvegete/PIC00022.jpg
http://www.cardomain.com/ride/2687555
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RE: I love my Jag, but... - 6/27/2008 5:58:48 PM
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XJ40ish
Posts: 513
Joined: 5/30/2007
From: Calgary
Status: offline
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Do yourself a favor and save a lot of money. Go to your dealer and have the car scanned for codes. This will pinpoint any faulty sensors and you might be suprized which one is causing you grief. Mine was stalling and had an intermittent check engine light which when it came on had the cat running like crap. Truns out to be a faulty coolant temp sensor causing all the rest to act oddly. If you want to keep a Jag you need deep pockets and remember for your overall investment they''re terrible to resell or get any money back. Drive it, love it, then dump it. Do not put a lot of your hard earned money into it. All that said, you''ll get a lot of advice when you have a Jag... some even usefull. But trust me on this before you get too far into it. Go to the dealer and have it scanned. It will cost you an hours labor charge and is well worth it. I replaced a lot of good parts for no reason on the advice of other usually starting with "Well...90% of the time it''s..." I''ve found 100% of the time they''ve been wrong.
Cheers
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"It has a Cap and Rotor? Man... I can''''t get over that."
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