mutsnutz

mutsnutz

Well-Known Member
got a p38 diesel auto 1997 and when going up hills its gets to 50mph and wont drop gear it just keeps losing speed till it levels out a bit then starts to speed up again can get 60-70mph on the flat but hills is just killing it tried to drop a gear but nothing happened
 
It's an oil burner so not as quick as a real one but should be quicker than that I think,
When did you last service it
 
Check the MAP sensor is clear of obstructions and the manifold outlet and the hose from that to MAP sensor is clear and not split or cracked allowing pressure loss. Other than that diag.
 
Cheers wammers il get it on diagnostic tomorrow map pipes are clear cannot see any obstruction
 
If it is just losing speed and not power, a slipping torque converter would do this or the auto box has problems.
Oil burner should be as good as the steam burners up the hills.
 
mutsnutz said:
How do I do that wammers
Click to expand...

Check for flow rate and function is described in one of my How To's in tech archive. If lift pump has failed or fuse 39 has blown or relay 12 is duff it will not run and would give you lack of power on hills.
 
Carefully remove the feed line to the fuel filter bowl and place in a measuring jug.

Either turn ignition on and crank or bridge the relay for 10 secs....should get approx 180ml of diesel in 10 secs
 
Saint.V8 said:
Carefully remove the feed line to the fuel filter bowl and place in a measuring jug.

Either turn ignition on and crank or bridge the relay for 10 secs....should get approx 180ml of diesel in 10 secs
Click to expand...

No lift pump with cranking on a 1997 Ant. Only with glow plugs or with engine running. To check it properly you have to power terminal 5 on relay 12 socket for ten seconds to measure flow rate into measuring cup.
 
Check the pipes into and out of the intercooler are OK too. If they've popped off or sprung a leak you'll lose power. I think the one out of the turbo sometimes delaminates? My old one fell apart after leaking oil all over the car.

IIRC a refurbed fuel pump from Diesel Jones in Manchester works out about £750. Then you have the hassle of changing it. Not a bad job but you do need to right tools.
 
I'd be going down the diag route before shelling out on a FIP though! :)
 
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