Hello,
I'm french, so first, sorry for my english...
I'm tring to solve a problem on my 88 4.0L XJ:
While the cars runs fine (at 50/60MPH), it has some "holes" at stabilized speed... but not on rought acceleration or even "off pedal foot"...
This car has an old alarm+cutoff, from precedent owner, I will remove it (perhaps it's the problem)
I begin to think about a faulty fuel pump, I have removed fuel tank, cleaned it (but was fine), check the pump, it seems to be fine also... so I replace it back... And the card doesn't start now :-( ...
When I turn to ignitition position, I hear the pump doing a small noise for 3 or 4 seconds, and same noise while I trying to start engine. The engine runs but doesn't start :
- I have checked at the valve on the injection ramp and there's some fuel (without any pressure).
- I have about 7 Volts at the pump plugs.
Tomorow I will try to :
-Remove the fuel filter (who has 3000Miles), and check if the pump give some fuel...
-Remove a plug and check for spark.
-Remove the old cut-off/alarm.
Anyone could give me some indications about finding the real problem ?
I'm from france and NOBODY here really knows the 4.0L XJ (only the 2.1 Diesel here...) so I cannot bring it somewhere to repair (it's an exotic car here...) and finding spares is a pity (could you find some Renault Megane parts in USA ?).
Thanks a lot for ANY advice.
I'm french, so first, sorry for my english...
I'm tring to solve a problem on my 88 4.0L XJ:
While the cars runs fine (at 50/60MPH), it has some "holes" at stabilized speed... but not on rought acceleration or even "off pedal foot"...
This car has an old alarm+cutoff, from precedent owner, I will remove it (perhaps it's the problem)
I begin to think about a faulty fuel pump, I have removed fuel tank, cleaned it (but was fine), check the pump, it seems to be fine also... so I replace it back... And the card doesn't start now :-( ...
When I turn to ignitition position, I hear the pump doing a small noise for 3 or 4 seconds, and same noise while I trying to start engine. The engine runs but doesn't start :
- I have checked at the valve on the injection ramp and there's some fuel (without any pressure).
- I have about 7 Volts at the pump plugs.
Tomorow I will try to :
-Remove the fuel filter (who has 3000Miles), and check if the pump give some fuel...
-Remove a plug and check for spark.
-Remove the old cut-off/alarm.
Anyone could give me some indications about finding the real problem ?
I'm from france and NOBODY here really knows the 4.0L XJ (only the 2.1 Diesel here...) so I cannot bring it somewhere to repair (it's an exotic car here...) and finding spares is a pity (could you find some Renault Megane parts in USA ?).
Thanks a lot for ANY advice.