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I guess I have lost situational awareness on this thread:
The car now starts, Yes?
If you have driven it, has the code changed to P1111 from P1000 (not yet ready for emission testing), as Hooli explained.
You apparently do not have the Supplement to the original Drivers' Handbook: page 19 shows the corrected layout for fuses in boot box. I have attached a copy.
Also, I have attached another useful do it yourself tutorial on quick tuning.
Hello Jim,
Non-starting 2001 Jaguar XJR: It's nice to hear from you again, you have helped me previously. My car doesn't start. NBCat has asked that I provide fuel pressure information, but I'm flailing a bit, as I've been unable to access the fuel pressure information from my new Ancel LD 700 reader. This morning, I have emailed Ancel asking for their assistance on three matters: 1) Can the product provide this basic service (fuel pressure information) as it is advertised as Jaguar Land Rover compliant? 2) If it is designed for Jaguar Land Rover, could they please explain why it doesn't access my VIN automatically? 3) Why does their scanner refer to my motorcar as X300 when consensus seems to be X308? Coincidentally, Ancel are based in Marietta, about 60 miles from here. In addition, NBCat offered an option, which is to attach a pressure gauge to the Schrader valve located at the leading end of the fuel rail. I thought I had found one this morning but not to be. The local Harbor Freight distributor, in nearby Dahlonega, advise they have no such gauge. Thanks, Jim, for including the Driver's Handbook supplement, which I'll study shortly, as I'm being beckoned to the dinner table.
Jim, hello again,
I found the pictorial layout of the relay / fuse boot box on page 17. If this is the correct page, then R4 was, indeed, the relay I removed and replaced. -Vic
Hello Jim,
Non-starting 2001 Jaguar XJR: It's nice to hear from you again, you have helped me previously. My car doesn't start. NBCat has asked that I provide fuel pressure information, but I'm flailing a bit, as I've been unable to access the fuel pressure information from my new Ancel LD 700 reader.
We, as a forum, have had this discussion on other threads & the consensus is the ODBII doesn't provide fuel pressure info.
Originally Posted by VicM
2) If it is designed for Jaguar Land Rover, could they please explain why it doesn't access my VIN automatically? 3) Why does their scanner refer to my motorcar as X300 when consensus seems to be X308?
My Foxwell needs telling my Jag is a Jag too, I think Jag were using a older style code so the auto detect doesn't work in some way.
The x308 was homologated as the x300, the x308 didn't have enough changes to need full type approval again. If you look in various places in the car Jag's stickers say x300 too.
One can use a smart phone with the Torque app to connect to a Bluetooth interface such as Elm in order to communicate with the vehicle's ECM/PCM via the OBD port. The Torque app is able to read fuel pressure and other parameters in real-time.
Hooli,
Ooops, thank you for correcting my false impressions. I wonder if you could recommend a scanner that might be more suitable for my needs. A layman, I purchased this one only because of its emphasis on reading Jaguar fault codes.
One can use a smart phone with the Torque app to connect to a Bluetooth interface such as Elm in order to communicate with the vehicle's ECM/PCM via the OBD port. The Torque app is able to read fuel pressure and other parameters in real-time.
Yeah I'd said the same on other thread & people who knew more than me pointed out there's no fuel pressure sensor so the car can't provide the data.
Unless you've got it to work? I've never tried, just seen it on the list Torque can do.
The fuel rail on the AJ26 and AJ27 has a 'pressure-port' to thread on a mechanical gauge to read the pressure.
The later cars with 'returnless-fuel system" needs a sensor to adjust the pressure with the PWM control to the fuel pump.(pump speed increase or decrease)
The ECM can provide the DATA of the sensor to be displayed on the later engine management.(typically on the 4.2 engines)
As mentioned many times: you must use a pressure gauge to read fuel pressure at the Shraeder valve: there is no electronic input to be read . . .
Sounds more and more like you need to take it to a garage and have new fuel pumps (and filter installed): although I hate coincidence: appears just coincidental that it ran after you upgraded the left side but failed after working on the right side . . .
Advice is cheap: Sometimes the frustration of trying to find the fault and fixed is much more expensive on body and soul and buying tool after tool than just biting the bullet and paying a pro to fix it.
Thank you, Jim, for your comment. I agree, for I've devoted hours phoning auto stores requesting a 60psi pressure gauge that will screw onto a Schrader valve. But no joy, no one seems to know. Visiting the stores seems the only answer. And to your second point, my father would always suspect the person who worked on the vehicle last--and he was usually correct. Mind you, two months ago, while at the grocery store, it refused to start. Ultimately it did.
Now we are being threatened by an ice storm tomorrow, which usually means fallen trees and deprived of electricity for a day or two.
My recollectoin is that the fuel rail Schrader valve is smaller than on many cars, so the standard adapter that comes with many fuel pressure gauge kits will not fit. You need the smaller thread-on adapter that is the same as used on later Fords and BMWs.
About 20 years ago I bought a cheap HARBOR FREIGHT fuel pressure set and it had the correct adapter as well as a bunch of others.
Looks like a TIRE PRESSURE GAUGE would be the correct fitting if you get a thread on and not a press fit hose?
Thank you, motorcar man (Bob), and Don B, and Jim. As I understand it, Harbor Freight, as Bob has mentioned, still supplies a kit, including a Maddox injector kit P/N 64939. Also, Napa another under their P/N W80595, which may be the Performance Tool kit supplied by Summit. Then considering DonB's comment regarding the smaller size of Schrader valve. As the existing Schrader valve cap is in my possession, I could perhaps use it to confirm valve diameter and thread count. Although, as you know, the existing Schrader valve is accessible on the XJR, however, it is not in the most convenient of locations and to facilitate the pressure gauge, I found a 6in extension that seems to fit the Schrader valve perfectly. It came from my bag of tire pressure components, as implied by Bob. So, I'll address these issues with the parts stores tomorrow and fingers crossed I can find an appropriate gauge. Regarding Jim's 'Git R Done' by a local shop' comment. In the best of humor, Jim, I'd like to try to counter the Jessie Colter's song with a little Churchill advice: 'Failure is never fatal, success is never final, it's resilience that counts'. I'm an old fellow; still I managed to replace the camshaft timing tensioner on the left bank, started the car, and drove it. So, the mechanics of the right bank might be fine. The engine spun over freely, it just didn't start.
Lastly, Bob, am I correct in thinking you confirmed two possible fueling arrangements applicable to the XJR: an early purely mechanical one and the later electronic one? Further, am I correct in thinking that the later normally aspirated cars and all the supercharged ones use the later single-pipe setup with an electronic sensor? Thank you again for your tolerance in this matter!
My Harbor Freight fuel pressure gauge kit is not as old as Bob's - I probably bought it 10 or 12 years ago. It was the biggest set they sold at the time. On the left in the photo below is the Schrader valve adapter that came with my kit. It is too large to thread on to the AJ27 fuel rail fitting shown at the right. The smaller adapter in the middle is one I purchased separately. I can't remember if it was described either as a BMW or Ford adapter, but it fits both makes from the '90s into the oughts or so. The adapter has its own short rubber hose and a quick-connect fitting on the other end that fits the HF fuel gauge.
And as Bob suspected, this smaller adapter will thread on to a standard tire Schrader valve (I just confirmed this). According to a quick duck search, the thread size is reportedly 0.305 inches outside diameter by 32 threads per inch, or in metric units, 7.7 millimeters outside diameter by 0.794 threads per inch.
