T/C or not T/C

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I'll just consult my crystal ball to work out what model and engine type this is, the ball might take longer to respond given 1999 is a model changeover year with two type of petrol engine and TC systems.
 
4 wheel traction control started on VIN XA410482.
If the P38 is before that, at best, it will have 2 wheel TC.
If the TC light on the dashboard doesn't light up, it either has a blown bulb or no TC :)
 
That means that a XA419674 should have....right?
One more thing, the abs modulator says "ABS" instead of "ETC". Does that mean that it isn't the original modulator?
 
XA410482 should have 4 wheel TC.

From the VIN I posted, until the end of the P38s, all of them came with 4 wheel TC. Before that VIN, 2 wheel TC was standard fit to all HSEs and optional in the SEs and DSEs.
 
Datatek said:
According to previous posts, there are some poverty spec P38's with no TC fitted.
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actually, i strongly believe that the previous owner changed that unit for a under spec. and i say that because there are other pieces that should be standard and don't exist...:mad:
 
jotasetubal said:
actually, i strongly believe that the previous owner changed that unit for a under spec. and i say that because there are other pieces that should be standard and don't exist...:mad:
Click to expand...

XA419674 should have 4 wheel TC. Wrong modulator fitted. Up to 1999 two modulators were fitted. Without TC and with rear wheel TC WABCO C system. 1999 and on ALL had 4 wheel TC and WABCO D system..
 
jotasetubal said:
actually, i strongly believe that the previous owner changed that unit for a under spec. and i say that because there are other pieces that should be standard and don't exist...:mad:
Click to expand...

Then you're bound to have problems as the ECUs are different and fitting an earlier modulator to an older ECU will give braking problems. Also, fitting the earlier modulator instead of the older one requires a botch job as the plugs are different.

Try searching around on the landmania forum as I recall someone over there had exactly the same situation. IIRC his P38 would lock all the brakes for no apparent reason and after inspection the problem was with a wrong modulator having been fitted by a previous owner.
 
I see in my future that i will be sticking my head inside my RR trying to find out if i have a WABCO D system or not.
 
jotasetubal said:
I see in my future that i will be sticking my head inside my RR trying to find out if i have a WABCO D system or not.
Click to expand...

Stick it on a Nanocom that will tell you. You have a choice of WABCO C or D diagnostics it should talk to the D ECU but not the C ECU on your car.
 
Not trying to dilute this thread but what is this 2 pin 4 pin diff thingy all about? I've heard it mentioned before and no doubt it's got something to do with strength.
 
jamesmartin said:
4 pin is much stronger ,2 pin has single shaft through an open diff carrier 4 pin has 2 shafts through solid case diff carrier ,though in normal use 4 pin isnt necessary

Redirect Notice
Click to expand...

Cheers for that, as I say, every day is a school day and that's my lesson for today. They are quite different I was more thinking it was just small changes. Okay enough prattle from me and back to topic :eek:
 
wammers said:
Thought the four pin diffs were only fitted to the front on 4.6 with 4 TC.
Click to expand...

I remember reading there was a post 99 crossover period and all the P38s ended up with 4 pin front diffs - the 4.6 Thor had them from the off. Front TC put too much strain on the two pin front diffs. Could be wrong I wish I could find the source.
 
doz said:
Cheers for that, as I say, every day is a school day and that's my lesson for today. They are quite different I was more thinking it was just small changes. Okay enough prattle from me and back to topic :eek:
Click to expand...

the link were 2 different diffs, but the ideas the same
 
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