I need your help about this engine.
Engine can not starting when hot, but if cold is OK also cranking..
what would I do?

Could be a number of things. the 2 main things I would look at are the catalytic converter (check the exhaust while its running when cold to see if you have a Restricted Exhaust.) and Crankshaft position sensor (if you don't have a Distributor for your spark plug wires). I have had similar problems on different vehicles throughout the years. once it was a crankshaft position sensor with a small crack in it you couldn't see but when it got hot and expanded the car wouldn't run until cooled down.

i'm guessing he's got a 2.5 turbo diesel, is that correct? and what year?
i wish i knew more about those motors. i'm guessing it's wither a heiu or common rail injection system, both of which depend on either stored values or sensor input to start the motor. you might need something to monitor the on board diagnostics with, and i have no idea what that would be for your ranger lol

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though a crank or camshaft position sensor would definitely be an easy thing to check first! and that's true whether you've got a gas or diesel motor!

__________________
1999 xlt 2.5l 5-speed Supercab 159k
83 diesel 2.2l na
06 F250 6.0l psd
{click for lol}

wait, no that 2.5 is a gasoline... lol

__________________
1999 xlt 2.5l 5-speed Supercab 159k
83 diesel 2.2l na
06 F250 6.0l psd
{click for lol}

When you figure it out make sure you post the diagnostic process and final solution. Problems like this are really tough to figure out and usually require a longish process to figure out the cause.

Hi... sorry I'm late..
Thank you for all response..
For now I'm finished this trouble, only replace engine oil, oil filter, air filter, fuel filter, and fuel flushing.. All Ok..

Next, I get some codes on ODBC scanning :
- P0406 : EGR sensor "A" circuit high
- P0705 : Transmission Range Sensor "A" circuit PRNDL input.
What should I do with this trouble codes ?

#Engine : Diesel Duratorq TDCi 2.5L AT year 2007
#VIN : MNBLS4D107W201711 Ford Everest made by Thailand

hmmmm. i believe that the P0406 code is a sticking/malfunctioning EGR valve. Unless i'm wrong lol, somebody correct me!

You will have to find the valve (and related components) on your engine and inspect it.
But first, can you send a picture of it? Specifically, i'd like to know if we are dealing with a classic vacuum operated valve or an electronic valve. I assume it's electronic since this is a relatively new diesel engine.

this is what I would do if it is electronic:
-inspect the wire harness and connector for cuts and chaffing.
-remove the valve and inspect inside the housing for excessing carbon buildup
-clean the valve and reinstall.

When reinstalling the valve, you may need a new gasket. they should be inexpensive.
With the cleaned valve, test the engine. if it fails again (code comes back), then I am betting that the valve is bad. you can either find a way to test it yourself, live with it unplugged (CEL will be lit) or replace it, depending on whether you are required to have emissions testing.
... you can probably d-e-l-e-t-e it too... but you didn't hear that from me!

about the P0705, i don't know but you might get lucky and find that "PRNDL input" sensor on the outside of the transmission. ideally, it will have a minor issue with wiring. but i have limited knowledge about that lol

__________________
1999 xlt 2.5l 5-speed Supercab 159k
83 diesel 2.2l na
06 F250 6.0l psd
{click for lol}

thank you Rob, I would check it again..also doing your suggestions..