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Jaguar s type: 2003 s type. Wife had been driving car for some…

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2003 s type. Wife had...
2003 s type. Wife had been driving car for some time. When I again drove it noticed a performance problem. It was due for a set of spark plugs so I changed them (pain in the ass job). No improvement. Pulled fuel filter and found water and rust. Replaced filter and added fuel injector cleaner and water disperser to full tank of gas. Took car out and ran the piss out of it then topped off tank with high test. Some improvement but still have a performance problem. Bogging down on take off from stop and intermittently through power curve.. Changed filter again. This time fuel looked clean. After another 75 miles still not getting better. Suspecting some kind of fuel restriction but don't know where to look next.
Submitted: 10 years ago.Category: Jaguar
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Answered in 10 minutes by:
9/17/2012
Jaguar Mechanic: Richard, Jaguar Technician replied 10 years ago
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,763
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
Verified
Hello and welcome to justanswer.com

Do you have any issues starting? Do any warning lights or messages come on?
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Customer reply replied 10 years ago
No issues starting. No faults except ”occassionally” if I really get on it hard and it bogs severely I'll get a limited performance message.
Jaguar Mechanic: Richard, Jaguar Technician replied 10 years ago
Ok I think we may have a problem with one of the ignition coils or it even can be a bad air flow sensor or vacuum leak. Since that warning did come on lets hook up a scan tool to read the codes. Stop by your local pepboys or autozone to see if we can get the code.
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Customer reply replied 10 years ago

AutoZone or PepBoys not necessary. I can read the codes. They are as follows.


P0300 - RANDOM MISFIRE
P0301 - CYL 1 MISFIRE
P0302 - CYL 2 MISFIRE
P0303 - CYL 3 MISFIRE
P0304 - CYL 4 MISFIRE
P0305 - CYL 5 MISFIRE
P1313
P1314
P1316
P1000


 

Jaguar Mechanic: Richard, Jaguar Technician replied 10 years ago
Ok all missfire codes like we thought. We first need to check for a vacuum leak. The preferred method is with a smoke machine but since you do not have one we can try spraying some carb clean around the intake and listen for a change in engine rpm. I have been seeing issues lately with the lower intake seals. I recommend we replace all the intake seals and gaskets (upper, lower, IMT seals) then with that upper intake off replace the three coils on the passenger side.
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Customer reply replied 10 years ago


Well, that's not going to happen today. Getting too late. Plus, I'll need to track down the replacement gaskets and coils before proceeding.

Jaguar Mechanic: Richard, Jaguar Technician replied 10 years ago
Ok I would only recommend Jag parts as your local dealer should have them in stock. Let me know.
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Richard
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,763
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Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.

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