Thread: Failure to Proceed

"seasoned independent Land Rover Specialist shop with all the knowledge and diagnostic tools needed"
some times it might just be a case of taking somewhere else for a second opinion. It's happened before where experts couldn't find a problem and some one else has fixed it. Take it to a reputable Auto trans specialist .

Yes. This is my next move.
Thanks

My D2a TD5 seems to do a bit of what your describing every now and then - maybe once a few months and has done for years now. I start the engine, and it just sounds a tad different, put it into drive and push the accelerator and it won't increase the revs of the engine, almost like the accelerator pedal is disconnected. I find if I coast out for a minute or turn off and back on it's immediately resolved. Sadly not in your car which would be frustrating.

For the described issue the TPS is very suspect, live data reading is needed from tracks 1 and 2 when the symptom occurs, if the first readings are good but they dont react to the throttle position there will be no code logged cos the ECU will "think" that there's no driver demand just idle.... if the readings are OK next call is the fuel pump

Originally Posted by sierrafery

For the described issue the TPS is very suspect, live data reading is needed from tracks 1 and 2 when the symptom occurs, if the first readings are good but they dont react to the throttle position there will be no code logged cos the ECU will "think" that there's no driver demand just idle.... if the readings are OK next call is the fuel pump

Does this - TPS - stand for "Totally and Permanently Stuffed"?

Error Code: Agreed! That the ECU is receiving "normal"signal - as it sees it. So, no error code appears. This pretty much rules out the ECU as the source.

I know the fuel pump is good.

Could it be the sensor on the Fuel Pressure Regulator? This I know as the FPR. (pretty sure I got that acronym right as I'm a bit of a Landie novice. Please forgive!))
This ( Ï am not letting you go" business) has only been occurring since the FPR was replaced earlier this year. I am not sure if the sensor was replaced at the same time or even checked at all? There might be a short or bad earth, perhaps? The car is 18 years old. Contact corrosion in the FPR sensor - would this be a possibility?

Should I just buy a new FPR sensor (or TPS thingie) and bung it in?

Much appreciated.

Originally Posted by terraaustralis

Does this - TPS - stand for "Totally and Permanently Stuffed"?

Error Code: Agreed! That the ECU is receiving "normal"signal - as it sees it. So, no error code appears. This pretty much rules out the ECU as the source.

I know the fuel pump is good.

Could it be the sensor on the Fuel Pressure Regulator? This I know as the FPR. (pretty sure I got that acronym right as I'm a bit of a Landie novice. Please forgive!))
This ( Ï am not letting you go" business) has only been occurring since the FPR was replaced earlier this year. I am not sure if the sensor was replaced at the same time or even checked at all? There might be a short or bad earth, perhaps? The car is 18 years old. Contact corrosion in the FPR sensor - would this be a possibility?

Should I just buy a new FPR sensor (or TPS thingie) and bung it in?

Much appreciated.

By now you will have found out that it is the Throttle Position Sensor being discussed.

and Sierrafery is one of our eminent gurus

That's great. My list of acronyms is improving. Thank you for the Sierrafery lead.

The sensor in the FPR is for fuel temperature, it's easy to be ruled out, unplug it and if then the fault is gone you know to change it... albeit i doubt it could cause such symptom, i'd replace the TPS if i was you