P38 Show stoppers and recalls

**TheTree** · 9th January 2014, 10:55 AM

Hi

I am looking at making a list of these items, I haven't seen one anywhere the one on rr.net is pretty good but doesn't say the CPS can stop you dead for instance.

Firstly it would be good to know what parts which you are able to carry which are show stoppers, things where the beast will not even limp home

So far I only have the Crank Position Sensor

Are there other items like this it is worth having on hand?

The second part of the list is recalls/bulletins/things which go boom, which don't seem to be in rr.net

So far
1) Factory bulletin on the thor idler pulleys, the plastic ones cause issues and are superceded

2) The Fans have been known to explode, not surprising after around 15 years

Any more of these?

Steve

**mtb_gary** · 9th January 2014, 11:28 AM

Steve

The Viscous Coupling in the Transfer Case as I found out the hard way. If it explodes no more drive.

The plastic locating washers in the ABS modulator, not so much a show stopper but a show no stopper

if they disintegrate.

Key fob battery could also be a show stopper.

Plus of course fuses...

Gary

**benji** · 9th January 2014, 11:53 AM

There are ways around most things of course.

Yes crank position sensor (ckp) is a show stopper; but if you cool it it may get you home.

Relays (efi relay) can be bypassed, as all the sensors and injectors (except ckp) run of the same ignition +v feed.

A really bad fuse box could stop things; but it's not hard to bypass the fuel pump fuse and relay, or feed power directly to the becm.

My only other thought would be an alternator (though with a full battery (or two), and the eas /hevac dissabled you should have at least a 100km range - maybe more on lpg if you disabled the fuel pump, and took out the efi fuse.

If I broke a diff in the bush, is there a way to drive out in 2wd?

**Hoges** · 9th January 2014, 02:47 PM

yep, disconnect the drive shaft to the broken diff. The VC takes care of the rest.

**benji** · 9th January 2014, 03:03 PM

I should have explained myself...
What if the diff has locked up?

Can the stake nut be undone easily?

**Robsrod 58** · 9th January 2014, 07:37 PM

From what I've learned the only two sensors on the engine that will produce a no go are the crank and cam sensors, so the experts tell me, I spose there is a plethera of mechanical things that can go wrong.

I guess all you can do is keep on top of the services, and that goes for any 4wd I guess!

Rob

**Hoges** · 9th January 2014, 10:22 PM

Originally Posted by Robsrod 58

From what I've learned the only two sensors on the engine that will produce a no go are the crank and cam sensors, so the experts tell me, I spose there is a plethera of mechanical things that can go wrong.

I guess all you can do is keep on top of the services, and that goes for any 4wd I guess!

Rob

According to RAVE, the camshaft sensor is used for injection timing and knock control. If it fails, the system defaults to standard timing and sequential injection occurs at Top Dead Centre...you may be lucky and it will fire at TDC on the compression stroke... but you could be unlucky and it will be one revolution out

So, it's 50% chance of being a show stopper ... and I guess you might limp home...albeit with a sickly engine. It will throw out the code P0340 ...

**Keithy P38** · 10th January 2014, 12:08 AM

Will it chuck a MIL lamp up on the dash?

**benji** · 10th January 2014, 06:10 AM

Gems will run with no cps. It'll log a fault code but no mil light. Even with no afm and cps it'll still run - not very hsppily though.

On lpg though, it will run with only the ckp.

I'll need to buy a larger socket, but I reckon with a breaker bar I could get the drive shafts out in the bush. Ergo, a siezed diff could be sorted out. Though with a breaker bar you would be able to take out the diff centre too.

**Hoges** · 10th January 2014, 03:11 PM

Originally Posted by Keithy P38

Will it chuck a MIL lamp up on the dash?

According to RAVE, only the NAS spec vehicles will show a MIL lamp. The CPS performs the same functions for both GEMSand Thor and the default situation is the same.

I replaced the CPS (only because I had a spare!) when I did the heads last year. Interesting though..SWMBO observed what I was doing and asked ...why replace it if it's running OK. I patiently explained it along the lines that the probability of the new one failing was now less than leaving the original in place.
Now I'm a known horder

and she watched as I wiped the original CPS clean, bagged and labelled it. "why are you doing that?" she asked, "...because then I have an emergency spare... which I hope I don't have to use"

She shook her head in a sad sort of way and wandered off...
As my 92 yr old, still driving/gym attending/cryptic X-word enthusiast Dad is fond of repeating: "...Never show women and children half-finished work"

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