discool
Well-Known Member
- Posts
- 13,482
As it the ecu that controls the "stepper" i'd now start there by getting it pluged in for a look-see.
3.9EFi revs dropping too low when drive & reverse selected
- Thread starter joe1972
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
vougese39
Well-Known Member
- Posts
- 1,039
testbook can do it but sometimes wont coms with the ecu i have the original 14cux tester because of this issue.
throttle position swithc is a fave so to is a afm fault as well.
for all the simple bits of 14 cux when it is not happy it still needs a fault read to see and a live data test to see if everything is doing what it should
throttle position swithc is a fave so to is a afm fault as well.
for all the simple bits of 14 cux when it is not happy it still needs a fault read to see and a live data test to see if everything is doing what it should
well to be honest apart from the ecu, the AFM and throttle pot is pretty much the only things left to change. Without the test gear its hard to rule things out and i have already forked out on a stepper motor that was okay anyway. Got a local independent looking at it next week, I'll report the findings!!
classic kev
Well-Known Member
- Posts
- 3,500
That is a possibility although a bit thin. Take stepper off and apply a small amount of RTV and put it back on, that should at least work as a temporary test/fix.
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
how did you up the idle, base idle re set or just on the cable?
base idle, as per haynes and on here. blocked off the plenum pipe and turned the allen screw till revs about 500 etc. the result was a lovely idle at 750ish when restarted.
but still started with bumpy 300 revs. steps up to 1500 then back down to 750,, however engaging D or R in this idling means back to bumpy 300 revs or sometimes a stall.
Cable is set perfect as far as slack in the linkage goes i.e 1.5mm or so
but still started with bumpy 300 revs. steps up to 1500 then back down to 750,, however engaging D or R in this idling means back to bumpy 300 revs or sometimes a stall.
Cable is set perfect as far as slack in the linkage goes i.e 1.5mm or so
discool
Well-Known Member
- Posts
- 13,482
The so called gasket is only a large fibre washer was it not
quite right, it is a large fibre washer as you rightly pointed out!! :clap2:
but the throttle pot "gasket" is a gasket and is still not there!!:5bcheers2:
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
well mine was similar on my old 3.9, due to high miles no love (before I had it) a probably stretched timing chain etc. I had changed the tps dizzy amp stepper and afm and they were set properly but in the end with timing and base idle play the best we could get was about 500 ish rpm and it did come close to stalling on a hot day when put in gear sometimes, especailly with the steering on full lock. although it did always start with a rev rise and more so when cold.
mines on 95,000 genuine miles, ex city car never seen a blade of grass. full history from Matlock dealer. I bought her in dec. previous owner said he just lived with it.
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
ive seen and lse with 40k FLRSH and the engine was full of black sludge and one cam lobe had almost worn away completly. its the city work that fooks them up I think!
I would buy a faultcode reader from ebay for the 14 cux they are only £50
14CUX ECU fault code reader TVR Range Rover Land V8 | eBay
it will make your life nice and easy and save a fortune in paying so called experts to do the same thing and then over charge you for fookin up your car or telling you its fine when its not.
has your motor got cats fitted?
I would buy a faultcode reader from ebay for the 14 cux they are only £50
14CUX ECU fault code reader TVR Range Rover Land V8 | eBay
it will make your life nice and easy and save a fortune in paying so called experts to do the same thing and then over charge you for fookin up your car or telling you its fine when its not.
has your motor got cats fitted?
bitter?
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
yes how did you guess , dont trust any so called landrover mechanics ever- waste of money, better off doing it yourself or even just getting jo blogs garage to do simple mechanical work.
do all my own work on the landy now bar mot tests, its always given the time and attention it needs for a 40 year old motor and no bull**** "thats how it should be" or being charged for half a job!
dummy spat, lol
, dont trust any so called landrover mechanics ever- waste of money, better off doing it yourself or even just getting jo blogs garage to do simple mechanical work.do all my own work on the landy now bar mot tests, its always given the time and attention it needs for a 40 year old motor and no bull**** "thats how it should be" or being charged for half a job!
dummy spat, lol
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
could be your lambdas plying up. I never had to worry about that on mine as it was catless. worth getting the fault code reader
