Why is my throttle body not working on my Jaguar?
First thing done was to change the connector pins to gold plated, didn’t work, so the throttle body was sent for refurbishment. They couldn’t find anything wrong, so it was returned and re-fitted. After discussions on this forum, the TB was replaced with a new Jaguar part.
Can a bad throttle position sensor cause idle surging?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light
Why is my Jaguar TB out of phase?
By the sounds of it Jaguar still have a cable but that runs to a pot on the TB. I wonder if unmetered air could be getting into the induction side of things and the lambda sensors sense a lean mixture and then try to close the TB to get the right burn mixture and by doing so the TB is then out of phase with the throttle pedal position ???
What causes idle surges on a car ECM?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges.
First thing done was to change the connector pins to gold plated, didn’t work, so the throttle body was sent for refurbishment. They couldn’t find anything wrong, so it was returned and re-fitted. After discussions on this forum, the TB was replaced with a new Jaguar part.
When is a bad throttle position sensor a warning sign?
Engine won’t idle smoothly, idles too slowly, or stalls If you start to experience engine misfires, stalling, or rough idling when the car is stopped, it can also be a warning sign of a failing TPS. You don’t want to wait to get this checked out!
By the sounds of it Jaguar still have a cable but that runs to a pot on the TB. I wonder if unmetered air could be getting into the induction side of things and the lambda sensors sense a lean mixture and then try to close the TB to get the right burn mixture and by doing so the TB is then out of phase with the throttle pedal position ???
What causes a rough idle or a ses?
A Rough Idle or a SES can sometimes be caused by a change in the throttle body position sensor calibration. To correct any accidental changes in throttle body calibration, use these procedures to recalibrate. Note: These procedures are a little tricky to do. You must get the timing just right Use a stop watch to help the precision of your timing.
What is the diagnostic code for a Jaguar check engine light?
Refer to our Generic OBD II code list for definitions on all other Jaguar diagnostic trouble codes. Manufacturer Specific Codes P1000OBD Systems Readiness Test Not Complete P1104Mass Air Flow Sensor Circuit Ground – Read Our Article On Automotive Circuit TestingFor Help With This Jaguar Check Engine Light Code P1111System Pass
How does throttle position sensor work on 1997 Nissan Maxima?
Today we’re replacing, and adjusting, a throttle position sensor. The sensor detects the opening and closing of the throttle valve and feeds that info to the vehicle’s computer. This was performed on a 1997 Nissan Maxima. Check with your vehicle’s repair manual for testing parameters.
What to do if you have throttle body problems?
Most were flagged up during self-check, but 2 were unusual – clear self check, start engine, evrything ok. Pull the gear lever into reverse – fail safe mode. As the orange engine had come up on the speedo, indicating that it had logged a fault, I booked it in to the garage for the next Monday.
How do you replace the throttle position sensor?
It is out in the open on top of the engine near the air cleaner, and you just unscrew a couple of bolts and electrical connector, and replace it with a new TPS throttle position sensor. What’s this video to learn how to replace your throttle position sensor, or TPS on your car. This is an easy job to do, and this video shows you how to do it.
How to adjust the idle speed on a Jaguar?
Check everywhere for vacuum leaks. A small vac leak will usually give you a slightly high idle but a larger one will give a low, lumpy idle. You’ll also want to adjust the throttle plate to the specified .002 clearance (this adjustment IS made at the throttle body)
Most were flagged up during self-check, but 2 were unusual – clear self check, start engine, evrything ok. Pull the gear lever into reverse – fail safe mode. As the orange engine had come up on the speedo, indicating that it had logged a fault, I booked it in to the garage for the next Monday.
What are the parts of a Jaguar S?
Jaguar S-type Parts: Accessory. CD Changers & Parts. Floor Mats, Carpets & Clips. Hood Leaper Ornament. HSMO & Other Fluids. Mud Flaps. Security & Keyless Entry Components. Shift Knobs. Stereo Speakers & Grills.
Where is the intake manifold on a Jaguar?
Under the throttle body you have 2 bolts one on each side that must be removed before the intake manifold can be removed. See photo above and below. I released the fuel pressure at the Schrader valve. Released both fuel lines to the injector rails.
Why does my Jaguar go into restricted performance?
It went into Restricted Performance almost every time I went out in it over a period of several weeks, the French dealer it was recovered to diagnosed a faulty turbo actuator but couldn’t do anything before I was due to leave for the UK.
Is there a air leak in a Jaguar?
Technician from Jaguar Assistance has been out and believes there’s a small air leak. Both turbos are hitting 100% boost but when the second turbo hits max boost there is a discrepancy between the mass of air going in and coming out!
How to reset the ecu-1 Jaguar car forum?
Restart the clock (where fitted) and set it to the correct time. Simultaneously press “>>” “PTY” “A.MEM” should only take 2 or 3 seconds and the radio turns on. 1. NOTE: After the battery has been disconnected it is necessary to
How to reset the battery in a Jaguar?
8 Release the foot brake. 9 Confirm that the brake warning lamp is no longer illuminated on the instrument pack and that “NOT CALIBRATED” message is no longer displayed in the message centre. 10 apply and release the EPB 5 times to ensure no error is present.
What kind of car is a Jaguar XK8?
If playback doesn’t begin shortly, try restarting your device. This channel is about our Jaguar XK8 and us working on it and finding things about the model. The team is Owen, my son and myself Damian Richmond (O&DR). Our car is a late 1996 (X100) Coupe and has given us lots of excuses to work on it.
What kind of engine does the Jaguar XK8 have?
Introduction The XK8 is powered by an all new Jaguar 4-litre V8 engine known as the AJV8. Its Engine Control Module
What should I know about the XK8 engine management system?
THE XK8 ENGINE MANAGEMENT SYSTEM AND ELECTRONIC ENGINE CONTROL MODULE Mark Gallagher B.Eng. C.Eng MIEE Abstract The increasing demand for feature enhancements on passenger vehicles combined with more stringent emissions and legislative requirements world-wide has lead to a high level of complexity within engine control des,
How does the ajv8 engine control system work?
associated emission control hardware and equally important, software. This paper briefly explains how the functions of the AJV8 engine control work and the diagnostics form an integratexi part of the system design. Introduction The XK8 is powered by an all new Jaguar 4-litre V8 engine known as the AJV8. Its Engine Control Module
What should the idle speed be on a Jaguar?
A small vac leak will usually give you a slightly high idle but a larger one will give a low, lumpy idle. You’ll also want to adjust the throttle plate to the specified .002 clearance (this adjustment IS made at the throttle body)
Where is the speed adjustment on a Jaguar?
It’s an aluminum casting with some hoses going hither and thither. The adjustment is made by turning the allen-head screw (5/16″ ?)which is located in the upper area of the block and a bit tricky to access (doesn’t matter if you’re blind or not—-it’s mostly done by feel).
What should I know about a Jaguar XJ8?
Many (1997-2000) Jaguar XJ8s have engines that can fail when exposed to high sulphur fuel. Nikasil is a metal coating that some manufacturers used to line the inside of their engine cylinders….notably BMW and Jaguar. In theory nikasil is great. It’s lightweight, offers lower friction, and is generally hard wearing.
When did Jaguar replace the Nikasil lining on the XJ8?
The replacement for a nikasil lining was a steel lining and Jaguar switched their production in August/September 2000 although the exact date is unknown. There is some confusion around the web about precisely which cars are affected. Jaguar has issued a statement saying that cars from 2000 onwards would not be affected.
When did the Jaguar XJR steel tensioner come out?
My 2000 XJR has no rattle at all during starting. Jaguar released a steel tensioner in 2002/2003. Some Jaguar technicians have reported fitting this steel tensioner during preventative maintenance. It is possible to upgrade all your tensioners and preferably to the steel version.