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Hi Newbie from Bournemouth
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Topic: Hi Newbie from Bournemouth (Read 1612 times)
Hi Newbie from Bournemouth
01 December, 2015, 15:54:38 PM »
Recently bought a 2002 4life cheap with a suspected headgasket faillure Ive replaced the gasket belts etc so that all sorted.
Just got the green flashing light to sort out now.
Loving it thou
Owners Club member
Re: Hi Newbie from Bournemouth
Reply #1 on:
01 December, 2015, 18:57:33 PM »
if you have a green flashing light, and dont understand your 4wd system read here
(stuff I have written before but has been lost in the public posting area, reposted here upon request so will not be list again)
this will be changed, and pictures added upon request
here we go!
my green light is flashing when in 2WD all the time when driving. no apparent driving effects noticed.
my green light is flashing or permanently lit when driving in 2WD I sometimes get a clunking/whining noise when driving
my truck doesnt shift into 4WD when I want it to/ flashing light only when in 4WD.
this is the most common problem, caused by people not using 4WD regularly/ever, so to quote the old tale "you dont use it-you lose it"
troubleshooting, you will need: A mate
the willingness to crawl under and get dirt in your eyes
a poking implement (small flathead will do)
19mm spanner (possibly)
begin by switching into 4h and back a few times, this could free the system up enough to put the light out (unlikely)
second, crawl under, behind the front wheels to the front diff. with the truck running. there will be a rubber cover around a rod which pokes out the back of the diff where the prop goes in this is called your actuator.
peel back the rubber boot at one end, there will be a shiny rod. now get your mate to shift in and out of 4h, when he does, the rod should move (into the diff in 2h) about an inch. its more than likely it isnt doing this.
if it is, moving slightly, pull the two vacuum pipes off the diaphragm at the end of the actuator, this is where the screwdriver could be handy, with the pipes off, try and wiggly the actuator rod by hand, with some WD40 in there to ease it up.
when you think its moving freely, connect the pipes back up, shift a few times and see if the light goes out.
IF YOUR ACTUATOR SEEMS TO MOVE FREELY WITH PIPES OFF, BUT THERE IS NO MOVEMENT WHEN THE STICK IS CHANGED.
to confirm this, put your finger/tongue over then end of the pipes that come down to the diff, the "front" pipe, which is the one closer to the passenger side, should suck in 2WD, and the other blue pipe should do nothing, visa versa when you switch to 4h
if it only ever sucks from one pipe,/ no suck or something similar, its most likely your solenoids have had it. If there is only ever suck coming from one solenoid, an you have already changed the solenoids, and the problem continues. check solenoid feed section.
to test this, pull the pipes off at the solenoids. (located next to brake reservoir/turbo -old shape) and put your finger over the end, conducting the same test, eliminating the possibility of a blockage in the pipes. if they still do not work as they should (swapping suck from one to the other as the stick is changed) then they have had it 9/10, if you have a multimeter handy you can test the feeds to the solenoids, should read 14v, and 0v depending on 2 or 4wd. (14v in 2h) both feeds should read the same. however this is less likely, more likely to be solenoids.
IF YOUR FEEDS TO SOLENOIDS IS NOT CORRECT
it could be one of two things. the ECU, or the gearbox sensors. if you know another L200, swap you 4WD ecu for theirs, located passenger footwell there are two ECU's the lower one is the 4WD ecu, swap this and see if it fixes the issue.
if you cannot do this, or this hasnt cured the issue. you will need, a mate, 19mm spanner, torch, 10mm socket.
remove centre console around gearsticks. underneath you will see transfer case, there are two electrical connections held on the passenger side of the box, held by a 12mm bolt screws in just behind the transfer lever. undo this, pull up the connections and disconnect, remove connections from bracket..
crawl under behind the box. reach up, and find the sensor at the end of each of the wires, one will be in front of the other, the one towards the front of the truck will most likely need replacing, comes out with 19mm spanner.
IF THERE IS NO VACUUM DETECTED AT ANY POINT?WEAK VACUUM.
to test this, follow the vauum pipes around the solenoids. there will be a T-piece, one to each solenoid, one goes down to a accumulator "coke can" on top of the offside chassis rail, behind the rubber flap in the front wheel arch. and one will be the vacuum feed going towards the alternator.
test the suck from the feed from the alternator. if this is bad, check all the piping back to the alternator for a hole etc
. if this feed is good, but there is nothing coming from the solenoids, pull off the feed pipes to the solenoids, and test the vacuum on these.
if there is nothing here wither, then connect all pipes. let truck run for a minute, shut off engine, leave for 5 minutes, then pull the pipe off that goes to the accumulator. this should release a strong vacuum that you can hear.
if you hear nothing, but the feed from front of truck is good, your accumulator is rusted and has a leak.
IF YOUR ACTUATOR HAS GOOD MOVEMENT, 4WD WORKS AND THE SYSTEM PRODUCES NO NOISE, BUT STILL HAS THE FLASHING LIGHT
there is a 19mm on top of where the rod goes into the diff. with a wire coming from it. undo the wire , (goes to chassis rail, connector there) then undo with spanner.
re attach electrical conncetion.
this will have a push switch on the end which should be shiny, when in 2WD, and the switch not pressed, there should be no dash light. if there is still a flashing light, after you have given the button a few presses to losen it up, you need a new switch.
the light should flash when you change to 4h until you press the switch in, then it should stay solid.
if all above is correct, the switch works well, and can be re attached.
if you still have the problem you need to check the 4WD ecu/gearbox switches and post your symtoms.
replace parts can be sourced from milners, do not get solenoids second hand off ebay, they will likely have not been used either an fail soon.
any symptoms iv forgotten please PM
02 4life red/silver, T-bar's, 3" bodylift, 31" MT's, LED headlights, under bonnet & interior light mods, K&N, Fuel timing advance, Reduced boost, free wheeling hubs, triple Air horns, "cruise control", DECAT, custom towbar, under sealed, EGR, stiff fan, boost & water gauges, CB, lockbox
No, my rear windows dont go up either
04 4work club cab (most reliable L200 ever)
04 warrior (least reliable L200 ever)
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