Thread: New week, new problem

Originally Posted by eckolsim

If Bessy is chipped with a large inter cooler this can also happen when you over torque the transmission (too much right pedal). It's just protecting itself.

More often than not it's downshift protection, rather than too much torque.

If you are accelerating hard with the throttle at say 80% then nudge it a bit further so it moves into the kick down region the Auto calculates the kick down shift would cause the engine to over-rev so prevents the down shift, then throws up the M&S.

As an example: 3100rpm in 3rd is roughly 100kmh. If you "request" kick down at this speed 4600 rpm is required in 2nd to match the road speed.

Strictly speaking the 4600rpm isn't over the rev limit, but I know from experience that nudging the throttle into kick down in 3rd @ 100kmh triggers this fault. It's just as easy to do this in 2nd too - 2750rpm in 2nd is a reasonable 60kmh, but if you push into kick down, you'd need
4650rpm in 1st to match the road speed.

Fault: 21
Description: Downshift safety monitoring
CARB: P0721
Ambient 1: N_MOT
Ambient 2: VGT_$X
Ambient 3: MMM

The transmission control unit has prevented a gear shift which would have caused an engine overspeed.

Diagnostic operates: Continuously
Conditions to be met to run Diagnostic: Transmission not in Limp Home
Time between fault present & fault stored: 10ms max.
Variables used by the diagnostic: Engine Speed, Target gear
Will limp home mode be selected: Yes
Conditions to be met to clear the fault: Ignition to be switched on whilst fault not present, engine cranked.

Well today, the m & S lights were constantly with me.

I did note that when i drove round town in 3rd that they didnt appear as often as they did when in drive.

I checked service history, and the xyz switch was only replaced in June last year. Surely they should last longer than that?

Could it be that its just come loose, and moved slightly, causing the faults?

Incidently had the battery tested and it is fine.

Cheers

Matt

Could be, if it's moved and the ECU is seeing the box in 4th but the switch is saying 3rd. Chaos may reign.

Hey Matt, good on ya for having a go!

Td5's are like old Harley's, just keep fixing em, and they just keep going (so someone at Fraser's in WA told me).

Can I ask where you're sourcing your parts from and whether you're happy with the prices? Don't have to give names if that bothers you, hints will do!

Dave

Originally Posted by Davetd5

Hey Matt, good on ya for having a go!

Td5's are like old Harley's, just keep fixing em, and they just keep going (so someone at Fraser's in WA told me).

Can I ask where you're sourcing your parts from and whether you're happy with the prices? Don't have to give names if that bothers you, hints will do!

Dave

Hi Dave....

The Drive Shaft I got from a friend... at a great price

The fuel pump I got from Triumph and Rover Spares down Lonsdale.

Pricing seems to be consistant with what others quote in this and other forums.

Cheers

Matt

put Bessy into the mechanics this morning to have the engine mounts changed.

Also had the steering checked as over the last week it has been playing up.

Mechanic just called me and advised that the steering shaft is knackered... BUT... hes never seen it happen on a D2 before... hes seen it happen in a few range rovers in the past, but not D2's

Cost of new steering shaft..... $400.00

So Bessy is having a holiday at the Mechanics until Monday afternoon.

Just my luck

On the bright side.... im going to have a new D2 by the end of this as all the parts will have been replaced!!!!!

Cheers

Matt

Well "Hopefully" I will get Bessy back today.

Been a long winded process, and have been without her since last Thursday, I miss seeing her in the drive

Anyway, Mechanic was waiting for new steering shaft to arrive from Melbourne. Was ordered Friday, but LRA warehouse didnt sent it on Friday so didnt arrive yesterday. Mechanic has been assured that it was sent via air freight yesterday, so should be here today... fingers crossed.

Anyway this is what has been done:

Engine Mounts replaced
Steering shaft (once it gets here)
xyz switch

Pricing.... not sure as yet!!

Cheers

Matt

Hi Matt,

Can I ask who you are using for mechanic work? I am currently looking for a new mechanic in Adelaide for my D2 and would be interested to hear who you use and how you find them?

Cheers,
Nova