I currently have a 2001 Jaguar S type, 81k miles, bought as a salvage car.
Body wise it is good (now) but mechanically I need some help.
I have been driving the car for about 3k miles, and it has a hesitation at take off. It will even begin to stall from take off or idle after warm up. At higher speeds 60mph+ it smooths out. It still noticeable, just not as bad as the lower speeds.
I have the obd II codes witch are: p0301, p0304, p0307, p0308 and p1572.
I have done a bit of research and understand these to be the misfires. But not sure how to proceed to diagnose. I will probably replace coils, plugs and wires any way, but beore i did that i was hoping to narrow down the problem. Cash is tight and if it is something other than the coils and plugs I would rather hold off and replace those later.

Not really sure if they were ever replaced as this was purchased from a salvage yard.

thanks in advance


Foma

 

moved over to the s-type section, think you'll get some more help as opposed to the new member section. You should, however, go back and start an introduction thread to allow members to greet you properly.

 

will do thanks!

 

welcome foma, please state which motor you have for proper diagnosis.

 

It has the 4.0, my apologies.

 

Could be an air/vacuum leak but probably coils. Keep driving it and write off your cats. MUCH more expensive

If money is tight and you're not really good at cars you're in a hole. You could swap more and more parts but not really be doing it right. These are not the ideal cars to drive 3K and hope.

You could have an underlying cause for so many misfires, but if you don't know OBD you'll struggle to tell and a tight budget leaves you exposed.

 

So what is the next logical step to diagnose. I can change the coils that won't be a problem, but i was hoping to isolate the problem. Maybe I can find a mechanic that can run the diagnostic and that will point me in a good direction.
By the way when i first got it running i did have a cat code but it cleared after running.

 

You've got a string of codes so either multiple problems or possibly one thing triggering them but if you don't already know lots about diagnostics I'd say swap coils, clear the PCM's learnt memory (disconnect battery) and see if any other codes occur. If you know a good tech (this is tech not mech, really), by all means get them to work on it.

 

I found a supplier on ebay that sells 8 coil packs for 124.65 w/a lifet time warranty. Locally I am finding prices around 55.00 a piece. Are the less expensive inferior to the more expensive ones.

I am going to remove my 1,4 and 7 today. Also, I have read about banks "A" n "B", and I believe tht bank "A" is on the right side (would that be passenger side?)

tks inn advance

Foma