Hi. Recently bought a 55 plate L200 warrior with same old issue of power loss after 3,00 revs under load. Ive already ruled out many things then finally took it for a diagnostic. The error codes were 41 - Throttle valve solenoid & 49 - Overboost.

So before I started adjusting the max boost screw on the turbo I thought I would look at the solenoid valves up on the inlet manifold. I unplugged the elecrics from the orange solenoid then took it for a spin. The truck now pulled like a train after 3,000 revs. However, the same symptoms of power loss were now between 1,500 - 3,000 revs? Once I plugged it back in, all returned to usual with the power loss after 3,000?

So, does this mean that the orange solenoid is faulty and worth replacing? Many thanks in advance... jj

Ruled out: Vacuum hoses, fuel filter, egr valve blanked off, actuator, map sensor..

got a multi meter mate? give me the resistace of solenoid please and ill let u know.

where u from whats ya name why dont ya register on the forum and join its free and we are all bonkers most of the time

Lol

Hi. Ill get on the multi meter tomorrow and get back to you with the resistance. Im John live down in the South West. Just waiting on the administrators to sort me out. Its doing my head in but will get there with your guys help! Ill let you know the resistance of the black one too if thatll help. Thanks...jj

Good luck John. They have a sw meet next month if you fancie popping along. Yeh check the resistance of both

Hi 123hotchef! The resistance on both the orange and black solenoids are the same. 30.8
I just took the truck for a spin with the 2 inlet pressure sensors unplugged at separate times. The ones that are 1. at the top of the engine in the middle( MR299300) and 2. the one near the back by the bulkhead (MR577031 DENSO)
When No.1 was unplugged I got the same response as when I unplugged the orange solenoid (power not a prob after 3,000 anymore but between 1,500 - 3,000)
When No.2 was unplugged the power problem was there through all the range.

The fact that I can make it work as it should above 3,000 revs makes me think it cant be injector or pump probs, right?!

Hope that all made sense mate and is clear as mud...jj

hi mate that makes sense yeh let me check the resistance parimentes in the book for ya one min mate

solenoids are both good mate 36-44 is spec,

the one at the back are u refering to the boost pressure sensor

with the 2 codes u have mate i would say ur boost pressure sensor is fooked get a new one

Ok great thanks for that. So even tho mine don't come between the parametres of 36-44 (30.8) they still ok yeah. Mmmm, back to the drawing board..

YEAH THE BOOST PRESSURE SENSOR. Ok that's what ill do then. They not much money. Many thanks mate. Oh, Whats the crack with the meets, what do u boys get up and that?...

6ohm nothing could be ya meter mate

it is really poniting to the boost sensor with those 2 codes u can check it but my money is on that sensor they aint cheap and i would buy a new one as i have seen people buy second hand ones that are fooked too

depends what meets mate sometimes off road, green lanes play sites pubs bigger meets for weekend ect where in the SW are ya?

Ok thanks. Im guessing by a new genuine Mitzy one yeah? Im in Exeter, Devon.

u could try milners or K and S international not sure if they do them but we get 5% and 10% respective discount from them, you are near @ronniecabers and @krutly then and maybe @wolfy they need more people to attend a meet its just the 2 of them normally!

LOL

Ok thanks, ill get my registration sorted and drop them a line sometime. Thanks again mate and yeah I see what you mean. Not cheap. Oh well, be another thing eliminated if nothing else. Will let u know how I get on...

looking at the mitsi book mate with those 2 codes thats the problem u can check the voltage between pin 2 and earth on the connector to sensor then at the ecu

did ya pm admin ur details for upgrade

Gonna check my emails in a min and see. So you reckon I can check with the meter if the sensors are fooked do you. Where is the ecu mate and what does it look like...

er i dont think the sensor can be checked properly but the book says pin 2 to earth on the sensor plug

and the ecu is in the passenger footwell asuming u have a uk RH drive truck, pull the plastict pannel off and look up near glove box ur see it a couple of 10mm bolts to take it out but u should be able to check it in situe mate

black or greay plastic box with 4 multi plugs going into it

pin 85 on the ecu not that that ill mean crap to ya out of 90 pins

Thanks. found one on Milners £130

Do people clean them, give em a blast with some contact cleaner. Worth a go you think?..

Yep ...I'm in the Southwest too.....up in the NorthWest corner of Devon, not very far from Bude, krutly is Barnstaple and Wolfy Braunton. Don't know of any meets been organised round here for next month...think cheffy has that muddled with South Central. Ours tend to mainly be pub meets though, but as krutly is the area rep , best chat to him about anything else.....As goes upgrading with Admin, I know she has been very very busy lately, so apologies for the delay.......

Yeh south central sorry. I don't know if contact cleaner will help.it is a sealed unit with a vac hose connected well boost pipe technically. U can try but I think u will only clean the external contacts they might have corroded but the plug has a rubber seal around it to prevent water ingress