Blinker Fluid

Or, if you need this instead:
Duralast/Crankshaft Position Sensor (SU5570) | 2003 Land Rover Discovery 8 Cylinders 6 4.6L SFI | AutoZone.com

 

I agree with Coors. The first step in diagnosing a CKP problem is to switch the fuel pump relay with the washer relay next to it. Takes 15 secs and could save you hours of labor and frustration! swapping the CKP.

If that does't work, you swap the CKP.

Then, if that doesn't work either, you start getting into coil and fuel pump diagnosis.

And by my recollection probly three of the "CKP" threads in the last year have actually been fuel pump relay problems.

And, for the record, the RAVE abbreviates the Crankshaft Position Sensor as CKP.

 

I'd like to know what it was but until we do my vote is fuel pump or pump relay.

If it was coil I think he would have misfire codes.

I'll defer to wiser members but when my CKPS acted up, my truck wouldn't start at all.

 

My truck would start fine with a ckps, it just wouldn't run when the engine was at operating temps.

 

Yeah, for the record my experience has been:

Fuel Pump relay - won't start when cold

Coils - misfire when warmed up or under heavy throttle

CKP - I haven't had this problem, but what I have read is won't start when it's warm. I think dying when it's running is a less common symptom, but it does happen sometimes.

So IMO it probly is the CKP. But checking the fuel pump relay is free and takes seconds, and it may save you money, time, and frustration.

Like I said, that relay should be the first thing people check, but in this case I bet it's the CKP.

 

I learned "the hard way" from experience. I had the same symptoms as the OP. I first swapped out the CPS only to have the a no start the following morning.

A forum member then suggested I try the relay swap, sure enough...

 

Well that's very interesting. I'll have to remember the relay can crap out when hot, also.

 

Relay is much easier to swap. If that fixes it, buy a Crank Position Sensor and a spare relay and carry both from now on!

 

Alrighty, it's been cold as ***** outside for the past week, but with a high of 60F today I manned the F up and got under the rover.

Ripped out the old crank sensor, and then tried for an hour to get the new sensor's connector mated up to the pigtail. Wasn't very fun.

After assessing the situation I determined to work smart, not hard.

30 seconds of sawzall later:



New sensor connected in a jiffy, flap folded back down and pinned.

Rover started right up, and ran in the driveway for 45 minutes without a hiccup.

 

That's one way to install it... I have little girly hands so I can do it easy