Hello guys,
thought it best to start a new thread with this no crank/no start problem.
Following my update on a belt and oil change together with a rocker cover removal and replacement I still cannot get him to crank over.
Codes are P0335 Crankshaft position. Dash shows Restricted performance and a yellow light and red light.
Battery fully charged overnight, so I doubt if its that, just fails to crank.
Any help would be much appreciated.

ArtyH

 

Is it possible that you inadvertently disconnect the CPS plug and left it unplugged?

 

JagRepair.com - Jaguar Repair Information Resource

Try this stuff......

 

I checked as much as I could see after it was last running. Then I repaired the rocker gasket mis alignment and then changed the drive belt, so the fault should logically be confined to the left side I would have thought.
Im afraid I dont know what the cps plug is or where it lives, help please.
Cheers,
Arty

 

Arty,

Check the harness and connection to the Crankshaft Position Sensor, the CKP (see item 4):



Graham

 

Seems improbable that you would have done anything at the rear of the engine, but not too bad to check. The sensor is removed to insert the alignment tool if you were setting the timing, accessable at the rear of the engine underneath. Maybe a hard reset will help, or maybe you have cyl wash. Good luck (and do you have JTIS?)

 

ArtyH, you say it fails to crank. Many of the replies appear to be answering a fail to fire situation.

Does your engine turn at all when you try to start it, or does it just sit motionless (what I would call fail to crank)?

Just trying to clarify.

Steve

 

Hi Steve, there is no engine activity when I turn the ignition key, I can hear all the usual electrical noises relays closing and pump running etc but no rotation of the engine.

 

Thanks for the info/advice mike will check later today.

 

Thanks for the info Graham, had a long day yesterday and worked on the car for a few hours got frustrated and retired to the lounge and the comfort of a bottle of red which I normally never do. Then resorted to wifey's tablet to update, hence the misleading part of my last question last night.
Should have been, " I don't know what the cps plug " looks like or where it lives ".
Many thanks for the clarification. Where it lives must mean taking the air filter and connections off, in order to see the CKP Crank position sensor.
I do not think the car has barrel wash as I believe this happens when the engine turns and fails to fire when attempting to start it? Mine does not turn or make any attempt to, all I get is the sound of the pump and relays clicking together with the indications on the dash.
Thanks for diagram Graham, its really helpful.
Also thanks to all who have helped and advised.
Cheers,
Arty.

 

The CPS is actually under the car and goes into the bellhousing, crawl under and look up you will see it......

This could be down to something completely different as I don't think the CPS would stop it from cranking..... Just out of curiosity put the car into Neutral and see if it will start

 

Arty,

I picked up on the CKP references but failed to absorb your information that the engine wasn't turning.

In addition to possibility of the Brake Interlock Solenoid or Brake Pedal Switch having developed a fault, check the main connection box in the boot:



(this is my 2005 XK8 but the earlier cars are similar)

The connection loosening or cable terminals starting to break up is a known issue which prevents sufficient power for the starter.

Graham

 

Thanks for taking an interest XKRacer and Graham, I will check out your recommendations shortley as the weather is starting to fair up. I will report back later.
Thanks again,

Arty

 

Arty, slow down, because we're getting sidetracked trying to help you. If the starter is not turning over the motor when you turn the key, it is totally different from engine codes. I posted a link already to Gus' site and his step by step process for a no-start situation. Food for thought....If you had the battery charging, why? Is it weak? Did you charge with the battery connected to the car? Did you check the power cables from the battery to the main fuses in the trunk and then to the starter for tightness and corrosion? Did you do a hard reset? (My car seems to have a glitch in the security system that makes me do a reset once in a while for the car to start. Could be the exciter ring going bad.) Did you reset the inertia shut-off switch? Investigate, then let us know what's happening.

 

Well I cleaned up all the fuses and links in the boot/trunk and made sure everything was clean and like new again. Tried the car in park and neutral and still no joy.
Apologies to ALL.
I remembered cleaning up the fuse/relay box's at the front of the car and leaving WIFEY to put the cover on the right hand side single relay ( just to give her something to do and have a hand in the project ( FAIL ) ). I just left her to it as one of the covers would not fully engage in the retaining hole and was just sitting there. So when I checked today I discovered the relay was popped out of its mounting. Pushed it back in and he fired straight up.
Again profound apologies for wasting peoples time on this wild goose chase, my bad.
On good thing to come out of it is if someone else has similar fault readings this is a relay to check along the way.
Thanks again to everyone who helped.
Cheers,
Arty

 

One other thing that came out of it Arty, never let the wife near the messy bits.

 

Glad you got it sorted ArtyH. No need for apologies, we've all done the same, and as you say, you've left breadcrumbs for others who find themselves in the same spot.

Steve

 

Arty,

Good to hear it's running again.

I've added 'RESOLVED' to your thread title to help others looking for a solution to this same issue in future.

Graham

 

Onward and upward. I've had to take a step away and give it a rest while having some ethanol more than once! And I hope you two are speaking to each other real soon.

 

Thanks again for all the support!!!!

I've taken wifey for a drive just to test him out and everything appeared O.K.
I will check for any leaks in the morning. I blame myself really for NOT checking after her, I know she could smash a ball bearing without any trouble so I should have been more careful, lesson learned.