Rover 3.9EFI Problems
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Rover 3.9EFI Problems
I have a Land Rover Discovery 3.9efi which is abit sick , the faults are lumpy idling , does not pull very well seems to miss abit and is stuggling to pull a 1500kg caravan unless its left in 4th gear which produces very bad fuel consumption return.
Have had a new dizzy fitted , new HT leads , New dizzy cap / rotor arm , Fuel filter all fitted but still the same
Can anyone suggest anything to help me please
Regards
Nigel
Have had a new dizzy fitted , new HT leads , New dizzy cap / rotor arm , Fuel filter all fitted but still the same
Can anyone suggest anything to help me please
Regards
Nigel
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Re: Rover 3.9EFI Problems
Hopefully someone more knowledgeable will be along soon but could it be faulty injectors?
nigel1966 wrote:I have a Land Rover Discovery 3.9efi which is abit sick , the faults are lumpy idling , does not pull very well seems to miss abit and is stuggling to pull a 1500kg caravan unless its left in 4th gear which produces very bad fuel consumption return.
Have had a new dizzy fitted , new HT leads , New dizzy cap / rotor arm , Fuel filter all fitted but still the same
Can anyone suggest anything to help me please
Regards
Nigel
Sounds like a faulty sensor, probably making it run very rich.
Two options
- Get a fault finding manual which tells you how to check the sensors from the ECU multiplug with a digital multimeter
- Take it to a garage.
Sticking a gas analyser up it's rear end would tell you if it's incorrect fuelling.
Chris.
Two options
- Get a fault finding manual which tells you how to check the sensors from the ECU multiplug with a digital multimeter
- Take it to a garage.
Sticking a gas analyser up it's rear end would tell you if it's incorrect fuelling.
Chris.
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Re: Rover 3.9EFI Problems
Are you a Flapper - if so:nigel1966 wrote:I have a Land Rover Discovery 3.9efi which is abit sick , the faults are lumpy idling , does not pull very well seems to miss abit and is stuggling to pull a 1500kg caravan unless its left in 4th gear which produces very bad fuel consumption return.
Can anyone suggest anything to help me please
Your description of the problem indicates anything from unwanted airleaks or fault in the Efi wiring/connectors or some specific components such at a noisy throttle pot or faulty coolant temp sensor or even the AFM.
My bet is the throt pot because you are running lumpy and the Fuel consumption has gone high, typical Throt pot issues.
Although intended for the 3.5 flapper on an SD1 the following test program should help you if yours is also Flapper.
http://www.vintagemodelairplane.com/pag ... djust.html
for throt pot solutions go here:
http://www.vintagemodelairplane.com/pag ... Pot01.html
For AFM solutions go here:
http://www.vintagemodelairplane.com/pag ... ter01.html
Ramon
http://www.vintagemodelairplane.com