4th Gear?

Canyon · Dec 8, 2007

My diesel Auto I dont think is enagaging 4th gear...I looked at the rpm at 70 mph- its just a little over 2600rpm ( flat road no load or passengers)

What are the change points for each gear typically?

What causing this to happen?

Canyon · Dec 9, 2007

Canyon said:
My diesel Auto I dont think is enagaging 4th gear...I looked at the rpm at 70 mph- its just a little over 2600rpm ( flat road no load or passengers)

What are the change points for each gear typically?

What causing this to happen?

I have changed the Fuel filter- thinking that the engine might be being starved of fuel..
I also cleaned the MAF- it look clean, but how can you test it? is one of those things which gradually gets worse or just dies instantly?
Appreciate your replies....

Davec · Dec 9, 2007

What was it doing before, those sound reasonable revs for 70 to me, not familiar with that vehicle though, although you don't say which RR diesel it is, (I can think of 7, but I'm not sure they were all available as Autos) but that still sounds reasonable for any of them

Canyon · Dec 9, 2007

Sorry its 98 P38 diesel auto. 2.5TD

rick071155 · Dec 16, 2007

Canyon said:
My diesel Auto I dont think is enagaging 4th gear...I looked at the rpm at 70 mph- its just a little over 2600rpm ( flat road no load or passengers)

What are the change points for each gear typically?

What causing this to happen?

sounds about right to me my 4.6 hse @ 70mph = 2600rpm if this is any help.
rick.

4th Gear?

Canyon

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