P38 Cranking

williamadam · Jul 28, 2019

Hi everybody
My car Range Rover P38 2.5D 2000 model, the car was probably starting when it is cold and after it get drive all the time starting probably, but after I wash the engine with water, the car start when it is cold with one crank, but when I stop it after drive and Cranking again it keep cranking but not start sometimes did, and almost not until it get cold again.
Please any advice or suggestions?

Datatek · Jul 28, 2019

williamadam said:
Hi everybody
My car Range Rover P38 2.5D 2000 model, the car was probably starting when it is cold and after it get drive all the time starting probably, but after I wash the engine with water, the car start when it is cold with one crank, but when I stop it after drive and Cranking again it keep cranking but not start sometimes did, and almost not until it get cold again.
Please any advice or suggestions?

P38's do not like water. Diagnostics would be my suggestion.

Grrrrrr · Jul 28, 2019

williamadam said:
Hi everybody
My car Range Rover P38 2.5D 2000 model, the car was probably starting when it is cold and after it get drive all the time starting probably, but after I wash the engine with water, the car start when it is cold with one crank, but when I stop it after drive and Cranking again it keep cranking but not start sometimes did, and almost not until it get cold again.
Please any advice or suggestions?

You might have got number 4 injector wet. That can cause issues, especially if you blast it with a burning stream of red-hot steam from a jet-wash that can cut through bricks. Just ask @tomcat59alan ...

williamadam · Jul 28, 2019

Datatek said:
P38's do not like water. Diagnostics would be my suggestion.

Thank you for reply, the only msg I got is Temperature air sensor -35. When I diagnose.

williamadam · Jul 28, 2019

Grrrrrr said:
You might have got number 4 injector wet. That can cause issues, especially if you blast it with a burning stream of red-hot steam from a jet-wash that can cut through bricks. Just ask @tomcat59alan ...

Thank you for your reply, I washed it with normal water nothing else and it was cold. If the problem with number 4 injector, should I replace it or is there any suggestion?
My regards

Datatek · Jul 28, 2019

williamadam said:
Thank you for reply, the only msg I got is Temperature air sensor -35. When I diagnose.

That is for the IAT which is not fitted to your car so the default -35 is shown.
If you have diagnostics, look at EDC temperature sensor, crank sensor, needle lift sensor and MAP sensor with the engine running. Try unplugging the MAF sensor. While you are at it you could check the modulation.

Grrrrrr · Jul 28, 2019

As above.

If you don't have diag then a hairdryer around #4 injector might be worth a shot. Be careful of the wires.

Grrrrrr · Jul 28, 2019

williamadam said:
Thank you for your reply, I washed it with normal water nothing else and it was cold. If the problem with number 4 injector, should I replace it or is there any suggestion?
My regards

So did Tomcat. The exaggeration was me teasing him a bit.

RangeRoller dt · Jul 29, 2019

Check no bubbles in clear pipe and spills are not disturbed.

tomcat59alan · Jul 29, 2019

Grrrrrr said:
So did Tomcat. The exaggeration was me teasing him a bit.

Get back in your shed,I'm surprised you can remember my post,it was so long ago.

Grrrrrr · Jul 29, 2019

tomcat59alan said:
Get back in your shed,I'm surprised you can remember my post,it was so long ago.

I try to make sure it is mentioned at least once a month, that way my goldfish memory has a chance.

I wish I was back in my shed. Back at work waiting for another computer restart to complete ...

wammers · Jul 29, 2019

Grrrrrr said:
As above.

If you don't have diag then a hairdryer around #4 injector might be worth a shot. Be careful of the wires.

A failed number four injector will not prevent starting. More likely the plug to the injection pump is damp.

Grrrrrr · Jul 29, 2019

Odd it works cold but not hot. That sounds more like chain-stretch and hotstart issue but I though the 2000 model didn't suffer from that?

wammers · Jul 29, 2019

Grrrrrr said:
Odd it works cold but not hot. That sounds more like chain-stretch and hotstart issue but I though the 2000 model didn't suffer from that?

They all suffer from chain stretch. And the static needs resetting.

williamadam · Aug 9, 2019

Hi guys again
Thank you for your replays, I am still suffering from this problem and other, I change the injector no4 I bought a used one and the problem still, I bought also from eBay (hot start kit) and the manual say , it has for wires 2 blue they should connect one to the signal wire number 1 in the coolant temperature sensor which I don't know where it's located and the other one the ECU, and the 3rd cable is red which it should connect to the 12v ignition and the black one to the ground, all of this I don't know where they located, and the coolant temperature sensor as well.
Also when I start driving the car there is no power and it's so slow even if I press the pedal to the end, but after 4 -5 sec it's drive faster.
When I drive on the way the center lock start locking and unlocking sometimes.
Please help me with some pictures or video if there is a solution with more explanation, I love Range Rover but I don't have any experience in the mechanic.
Many thank in advance.

brianp38dse · Aug 9, 2019

Have a look at this web page should help
http://www.tawpark4x4.co.uk/instructions/bmw_hotfix.htm
And the locks jumping is probably the drivers door lock micro switches playing up.

Grrrrrr · Aug 10, 2019

williamadam said:
Hi guys again
Thank you for your replays, I am still suffering from this problem and other, I change the injector no4 I bought a used one and the problem still, I bought also from eBay (hot start kit) and the manual say , it has for wires 2 blue they should connect one to the signal wire number 1 in the coolant temperature sensor which I don't know where it's located and the other one the ECU, and the 3rd cable is red which it should connect to the 12v ignition and the black one to the ground, all of this I don't know where they located, and the coolant temperature sensor as well.
Also when I start driving the car there is no power and it's so slow even if I press the pedal to the end, but after 4 -5 sec it's drive faster.
When I drive on the way the center lock start locking and unlocking sometimes.
Please help me with some pictures or video if there is a solution with more explanation, I love Range Rover but I don't have any experience in the mechanic.
Many thank in advance.

Have you downloaded RAVE yet? At the end is an electrical section showing all wiring with pictures of the location. RAVE is linked in the Technical Section.

@martyuk on here refurbs the locks with uprated microswitches but people keep failing to return their old units so he might be short.

Also, the boot switch degrades over time and can start leaking water. It earths through the driver's centre microswitch but if water is present in the switch it can cause odd behaviour.

@wammers is the diesel God. For slow pickup I just don't know. It has a throttle pot. Maybe the first part is worn? Or maybe the fuel injection isn't being advanced enough on acceleration? Pump timing too far retarded? I don't know and am just guessing but Wammers will know. @Datatek or @kds might know as well.

Datatek · Aug 10, 2019

Grrrrrr said:
Have you downloaded RAVE yet? At the end is an electrical section showing all wiring with pictures of the location. RAVE is linked in the Technical Section.

@martyuk on here refurbs the locks with uprated microswitches but people keep failing to return their old units so he might be short.

Also, the boot switch degrades over time and can start leaking water. It earths through the driver's centre microswitch but if water is present in the switch it can cause odd behaviour.

@wammers is the diesel God. For slow pickup I just don't know. It has a throttle pot. Maybe the first part is worn? Or maybe the fuel injection isn't being advanced enough on acceleration? Pump timing too far retarded? I don't know and am just guessing but Wammers will know. @Datatek or @kds might know as well.

Needs to go on diagnostics for the engine problem.
Sort the power problem BEFORE fitting the Hot Start mod or you will just be adding to the potential problems.

dubbleRR · Aug 10, 2019

williamadam said:
I wash the engine with water, the car start when it is cold with one crank,

Next time try just cooling the injection pump ,If it starts its something to do with the pump,,

,Try it tell us how you get on ......

RangeRoller dt · Aug 10, 2019

williamadam said:
Also when I start driving the car there is no power and it's so slow even if I press the pedal to the end, but after 4 -5 sec it's drive faster.
When I drive on the way the center lock start locking and unlocking sometimes.
Many thank in advance.

Does it do the 4-5 sec thing when cold?? Could be a hotstart issue effect.

Look up ‘ghost locking’ in search bar. @DanClarke is good with this there is also a test sheet on here somewhere by MartyUK

P38 Cranking

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