Frostycab
Active Member
Hi guys, I'm at a loss!
Put the range rover in for its MOT last week. Pretty certain it was going to fail but it had to be done!
Well it thankfully only failed on balljoints passenger side and high CO (0.49 first run fast idle and 0.35 second run fast idle) on its Emission test.
Its a 95 4.0, no LPG just good old petrol around 75K
Only outstanding issues are it taking ages to start from cold or if left for a while when warm like its losing its fuel pressure and has to pull it back up from the tank and this past wee while it been pinking when you plant your foot.
Pinking wise, had a look in the bay and noticed the drivers side knock sensor was looking a little melted so assumed it was that. It had to go in for its MOT before I could change it but got it swapped out today and its still pinking!
Now I've always assumed pinking was being caused by a lean mixture or ignition timing but from the MOT fail it looks to be running rich???
The long cranking time I have yet to get to the bottom off. when cold or been left standing more then an hour if you depress the valve on the injector rail it just hisses a small amount of air??? Fuel pressure reg maybe?
Been trying to get hold of a pal who has an MSV faultmate to scan it but in the meantime I borrowed a mates OBD11 scanner on the off chance it would shed some light, it connected ok but no fault codes are showing but as mine is OBD and his is listed as 96 vehicles onwards I'm not sure how well this can be trusted.
I'm not bad with the spanners so where should I be looking first? Had a read through RAVE and think it could be a camshaft postion sensor as what I understand from reading is that it sorts ignition timing and knock control and the car will still run even if its failed? Am I right or am I barking up the wrong tree entirely?
Could one of the Lambda probes been playing up? If so, can I test this on the drive with a basic multimeter and how or will I need something more specialised?
Any help would be muchly appreciated!
Put the range rover in for its MOT last week. Pretty certain it was going to fail but it had to be done!
Well it thankfully only failed on balljoints passenger side and high CO (0.49 first run fast idle and 0.35 second run fast idle) on its Emission test.
Its a 95 4.0, no LPG just good old petrol around 75K
Only outstanding issues are it taking ages to start from cold or if left for a while when warm like its losing its fuel pressure and has to pull it back up from the tank and this past wee while it been pinking when you plant your foot.
Pinking wise, had a look in the bay and noticed the drivers side knock sensor was looking a little melted so assumed it was that. It had to go in for its MOT before I could change it but got it swapped out today and its still pinking!
Now I've always assumed pinking was being caused by a lean mixture or ignition timing but from the MOT fail it looks to be running rich???
The long cranking time I have yet to get to the bottom off. when cold or been left standing more then an hour if you depress the valve on the injector rail it just hisses a small amount of air??? Fuel pressure reg maybe?
Been trying to get hold of a pal who has an MSV faultmate to scan it but in the meantime I borrowed a mates OBD11 scanner on the off chance it would shed some light, it connected ok but no fault codes are showing but as mine is OBD and his is listed as 96 vehicles onwards I'm not sure how well this can be trusted.
I'm not bad with the spanners so where should I be looking first? Had a read through RAVE and think it could be a camshaft postion sensor as what I understand from reading is that it sorts ignition timing and knock control and the car will still run even if its failed? Am I right or am I barking up the wrong tree entirely?
Could one of the Lambda probes been playing up? If so, can I test this on the drive with a basic multimeter and how or will I need something more specialised?
Any help would be muchly appreciated!