03 D22 idle at 1700rpm!!

[parlyboy]

Hi

Today my diesel felt like it over reving coming home from maitland. I got to black hill coasting down a hill and it simply cut out?? I started it back up and crept up to 1500 - 1700 RPM and been doing it all afternoon. Im scared.

I have changed fuel filter twice in last 12 months for a similar problem.

Any ideas of the problem?

 

[RustyNav09]

hey mate. i dont have the same model but ill throw a few suggestions your way it might help

maf sensor - need cleaning or replacing?
have you got the heater switch turned on?

thats all i can think of at the moment.

goodluck
Rusty

 

[Dave]

Check the primer. How many pumps does it take to go hard ?

MAF. ZD30DDT doesn't use. ZD30DDTI use a MAF.

D22 spec ZD30 runs a MAP sensor. They rarely !@#$ up.

Sounds like air in the lines.

 

[parlyboy]

Just went out and pumped. Approx 2 and a bit pumps till hard.

Heater switch is not on.

With all these problems...maybe we should hold a Navara workshop learning day.

Beers provided of course...lol!

 

[Dave]

The ZD30's are a pretty basic setup.

Next thing to check would be the Crank Angle Sensor.

Any odd noises ?

 

[parlyboy]

No odd noises.

Could it possibly have anything to do with Neutral Position Switch?

I tried that test last week (before this problem started) and all seemed fine. In saying that, I dont mind replacing that as its got near 200kms on the clock.

 

[tweak'e]

the cutting out could be fuel restriction. check filter and check for air in fuel lines.

high rpm, let it sit idle for 5-10 minutes and idle should reset it self.

 

[parlyboy]

will do thanks, might have to take to someone to check it over when its doing the wierd idle thing.

 

[parlyboy]

Well day 2 of high idling. Engine cuts out in exactly same spot driving home. Freaking me out.

 

[tweak'e]

did you let it idle for 5-10mins ?

 

[parlyboy]

no i didnt...what would happen if i let it idle?

 

[tweak'e]

no i didnt...what would happen if i let it idle?

high rpm, let it sit idle for 5-10 minutes and idle should reset it self.

as mentioned before.

 

[parlyboy]

I tried it this afternoon.....and worked!! well it went back to normal rpm. THankyou.

 

[Bvandermaat]

True test will be to see if it does it again tomorrow on the way home.
I agree with RustyNav09 try cleaning your MAF Sensor (Mass Air Flow). Should be located near the air filter box.

 

[tweak'e]

no MAF on a 03 D22 diesel.

 

[Bvandermaat]

Well that takes that out of the equation then.

 

[Black beauty]

if it cut out at same spot, it might be a leak somewhere in the feul supply, i had it once on a previous ute (colorado), it start up in the morning, run till the pump is empty, after priming it, it run with no drama till the next morning.

 

[Dave]

Was talking to Owen before.

The idle is fixed, see how he goes on the way home.