mistral issues

[mjm370]

Hi guys,

gona tell you about the issue i am having with my mistral too see if anyone has heard of similar.

My superb father decided too put £15 worth of petrol into the bus, noticing his mistake he then filled it with diesel too dilute, the vehicle ran perfect for around 4 weeks then started too get slugish, i then changed the fuel filter and it was gunked up too the max, new filter and it ran like a new car again, then it started too have intermitent power loses, and refusal too accelerate on the mway. we then thought this could be the petrol in the tank working its way in the mix, I then trusted my father again with control of the vehicle too get a phone call to say he was 60 miles from home, breaked for a roundabout and the vehicle cut out.

after getting the trailer out and picking it up, i discovered the engine managment light flashing, the vehicle refused too start.

Once i got it home i drained the tank and changed filter and purged all fuel lines.

but nothing, the fuel gets too the pump but the pump refuses too take it. no fuel at injectors.

ECU codes are 18, and 38, 18 being the fuel stop solinoid. checked it and found there is a circuit throught it but i cant get a click or clnk from it, also as i aint too upto date on diesel pumps is the stop solinoid the big 20somthing mm nut on the side of the pump with a yellow and red wire going to it?

i have performed every check on all ecu pins too confirm relay and ecu function and all is good, the only part i am stuck with is the pump parts and functions, as for some reason my pump is diffrent too the pumps show on the workshop manual.

any help would be good guys

thanks

michael

 

[Toolbox]

Hello mjm370,

Code 38 is the fuel shut off solenoid and 18 is the fuel quantity adjuster/position sensor (electric governor)

I suppose the fuel quantity valve could be sticking due to having petrol through it, petrol not having very good lubrication properties. But wouldn’t think it would affect the fuel shut off solenoid.

On a Bosch vp37 pump the stop solenoid is at the rear of the pump screwed in to the top of the square section that the injection pipes come out of.

Do you have any pictures of your pump?

 

[mjm370]

Hello mjm370,

Code 38 is the fuel shut off solenoid and 18 is the fuel quantity adjuster/position sensor (electric governor)

I suppose the fuel quantity valve could be sticking due to having petrol through it, petrol not having very good lubrication properties. But wouldn’t think it would affect the fuel shut off solenoid.

On a Bosch vp37 pump the stop solenoid is at the rear of the pump screwed in to the top of the square section that the injection pipes come out of.

Do you have any pictures of your pump?

hi toolbox, thank you for the reply, i cant upload any pics at the moment,
my pump has a large black plug that is held in by four screws that are capped with rubber bungs, directly on the side of it. if that helps you?

would you suggest taking the pump off? too strip it down and rebuilding it? or is there an easy way too clean the govener?

thanks
michael

 

[Toolbox]

Sounds like a Bosch VP37, I have sent you a picture of one by email to confirm.


I can’t really advise you to strip the pump down and clean it, I would have a go if there were nothing to loose.
I have always sent them away to be repaired not having the info or the tools to set them up. The timing valve and stop solenoid are easily removed but the fuel metering valve is another story.

I would make absolutely sure it’s the pump before you proceed and remove it as they are a bit of a pain to get off but not the worst job in the world.

 

[mjm370]

thanks for the reply,

I have checked all the ecu loom and functions and all is good.

seems i may have too bite the bullet and pass the pump over too a derv pump specialist.

reading the pump removal procedures and it looks too be a pretty similar plan from the sunny/pulsar gtir setup, so i should be able too get it off and on ok.

will let you know how it goes

regards

 

[Toolbox]

I found removing the radiator a big help for space, especially when refitting the gear and turning the engine with a socket on the bottom pulley to set the timing.

The fuel metering valve is number 4/6 in the picture operated by the shaft running down from the top

 

[mjm370]

cheers mate.

8)

 

[Toolbox]

I forgot to mention, do you have access to a DTI that screws in the back to reset the timing?
If you don’t then mark the pump and timing case before you remove it, this wont be far out when refitting unless the pump is completely overhauled, in which case I would check it correctly.
Also line up the timing marks on the gears before removing the pump gear.

If you remove the front offside wheel and inner wing rubber cover you can get to the injector pipes to undo them, you will need to remove the battery and power steering pump, if your vacuum pump is gear driven and mounted under the injection pump this also will have to come off, you will find that the bottom mounting bolt of the injection pump is almost impossible to undo without its removal. Its one of those cases of you can see it but cant get a spanner on it.


Good luck.

 

[mjm370]

well folks i can now say that the mistral is back in action!!!

after a few crossed words scuffed knuckles and alike i got the pump off!!

and loan behold it is a ZF pump made in conjunction with nissan.

stripped it all down to find that the internals were totally smashed, seals burst, inner housing all scuffed and grazed.

i then priced all the parts for it, some having too come from japan due too it being a non uk pump, so it was going too cost approx 4-600 quid for the bits.

so thanks too a few contacts i have a brand spanking new pump (not reconed) for just under 800quid

poped it on, flushed fuel system, removed fuel tank and drained, cleaned,

and within 2 turns of the key its alive, no codding issues or any probs at all.


i am so glad thats over :lol: