Just wondered if anyone knows much about how it works.

Its the stock one - but don`t work in fact never has.

There is plenty of boost as the car does 0-60 in 5 to 6 secs.

The gauge itself works and the sensor unit that feeds it

works as I have had a syringe on it and it goes + and - ok.

Am I right in thinking that when engine is idleing gauge should read minus and when boosting should read positive?

My gauge just stays in the centre.

Have checked vacuum pipes and all the ones I can see seem to be connected ok.

Has anyone ever come across this problem?

No doubt something very simple but damn annoying when

you can`t find it

 

Cheers

Mark

Oooh just noticed happy Senior Member to me!

Have you checked where the turbo gauge tube goes into side of the engine? Is near the battry. Little feed which looks like a big bolt with a tube going out of it.

 

Stuart

The car doesn't idle high as well does it? I'd check the vac pipes in the area of the sender against another zed - there are quite a few and very often mechanics get them on the wrong way round - I bet your boost guage is trying to read from the vac line that goes to the turbo inlet...

 

HTH

 

CheerZ,

 

Andy

Stuart

 

If you mean the bolt like outlet just below the balance tube

with a thin metal tube coming out of it - thats connected and goes to a T connector of a solenoid right next to the battery!

Is that right?

 

Andy

 

The idle isn`t bad - a little erratic but I can live with that.

You could well be right about pipes being wrong - trouble is

I dont know anyone else in the area with a 300.

I`ve tried to follow the vacuum pipe drawing but I seem to go round in circles.

The vacuum pipe that feeds the sensor unit goes to the lower

one of two metal tubes fixed to side of engine - comes out

the other end and goes into what I think is the big inlet

tube from the air filter.

Thanks for the help guys

Mark

Hello Mark,

 

Exactly what Andy said!! On jaz's car, a mechanic did exactly that, he got them mixed up. We compared it on my Z and sorted it out.

 

If I can help at all, let me know.

 

Vijay

Vijay

 

You could well be right.

Iv`e tried swapping all the ones I can get at and then put them

back.Dont know if Iv`e got two problems or not! No - and no +

reading!

 

Cheers

Mark

Mark, thats DEFFO wrong m8!

 

Try swapping the two hoses over - the one that goes to the lower metal pipe - put on top metal pipe and vice versa.

 

Thats why your idle is erratic too btw ;) Or at least should be ;)

 

CheerZ,

 

Andy

Andy

 

Thanks for the advice.

I swapped the vac pipes over so that the one from the sensor

now goes to the upper metal tube on the side of the engine.

It then comes out of the metal pipe/tube and goes into the

front of the engine near the throttle chamber thingy.

But still no good - gauge still not working!

Should I be getting vacuum from this vac hose where it comes out of the engine?

 

Mark

Erm I removed all that shitty vac solenoid stuff when I had my engine out - Nelson would be proud of my mass saving technique :D

 

You really do need to get it next to another one to trace the pipes tbh...

 

CheerZ,

 

Andy

Ok Andy thanks for trying anyway

 

Mark

Mark, if you want call me at 6 tonight on 07801 735117 and I'll stand over a zed and compare where hoses go - hows that sound - sorry can't do later cos I'll be that pissed I won't be able to see :D ;)

 

CheerZ,

 

Andy

Ok Andy I`ll ring you at 6.00

 

Mark

mark im just down the road from you,huntingdon,ive got a japtt if you want a look.working this weekend but off mon and tues,give me a call if you like 01480380071

Bob

Bob

 

Thanks for the offer of help.

Glad to say problem sorted now.

As you are nearest guy with 300 to me perhaps we`ll meet up

sometime.

 

Mark

glad youre sorted mate.yes a meet would be good we can compare problems and the astronomic cost of repairs. :D