I blew a radiator hose had it towed to the shop where the hose was replaced since it’s been having trouble starting I’ve called 2 mechanic to look at it and when they arrive it starts perfectly. Today a mechanic came twice it started for him he left. I tried, it wouldn’t. He came back it started. We hear the fuel pump. I ran the codes and have p0138 and p0158 with the engine off. Can anyone help

 

Editing complete ....reread added info and ask questions

There are a series of relays you can swap so we will be referencing this Doc

You can double click the image to enlarge and print off at the office supply store from a flash drive





The fuel pump will only come on for 4 seconds only with key rotation and when the crankshaft position sensor sees engine rotation the relay will close for the duration of your drive , You can jumper this relay to directly power the pump at all times , this will drain the battery with the keys in your pocket so plan accordingly



This will be the fwd most socket to the rear most socket , this will be socket 3 to 5 or 30 to 87



Use a blade type connector like this the front counter at a auto parts store can help build up from a tool and parts kit they can dig through




The starter solenoid relay can be swapped with the headlights , fog , or A/C relay of the same part number stamped on it

The ECU gets its 1stpower from the right engine bay fuse box ( called the ignition positive relay ) it can be swapped with the left engine bay fuse box relay which only runs your horn

The ECU gets its 2nd power from the large ECU controlled relay that is controlled by the ECU and brings power back into it , same thing swap with a headlight or other

This 2nd power is needed at all times

The large relays can be stuck so unclip them and flip upside down and spray the mating seam with penetrating oil and a rag to grip them when pulling off the socket

 

A common cause of intermittent cranking but not starting is the crankshaft position sensor. There is usually no fault code raised that directly relates to the sensor itself and they can go intermittently faulty before failing entirely. I have replaced 2 on a low mileage vehicle with genuine Jaguar parts and the first time it was very intermittent. If the tachometer needle moves when cranking then it is likely that the sensor is OK.

 

Where should the tachometer be when cranking it sits in the zero but shakes even when the car starts

 

The Max cranking speed is 300 RPM\

The CKPS can fail in its use as a fuel pump relay enable without a CEL code of P0335 and the tach still good

If you have the addition of the tach acting up I would put in a new CKPS and are commonly Avail at the auto parts store between $ 90 - 100

CEL P0340 is the Camshaft position sensor that is only used in the starting sequence, but the car will start with the CMPS connector off

The CKPS will be used for ignition timing and fuel injector timing so is a chance that those can fail on the way home

So it depends fs you want to take a chance, but some carry a spare CKPS in their trunk

What you can do for free is to clean the face of the sensor along with the connector

 

I’m going to replace the crankshaft position sensor, I got it to start and see what you mean by 300 rpm and it wasn’t doing that in the times it didn’t start it would just sit at zero thanks

 

The sensor should arrive today. I got another code p1193 turned up today. It has been sputtering and cuting off at red lights. Is that all crankshaft position sensor related?

 

Yes but could also be

sticking injectors as the pulse width is at it's shortest at this point

Coil health

under performing fuel pump

out of adjustment TPS , do not touch yet

sticking throttle body butterfly not arriving at the correct idle stop position

throttle cable return spring lacking in force

IAC valve not arriving at the correct position

EGR valve not arriving to the closed position , just cleaning the EGR valve gave someone good idle results

Bad gas at last fill or resent water contamination from the gas cap / clogged fill well drain line , happens more than once , me included

So you would have to pick the easiest without having concrete evidence it is one

New fuel

Your codes are on page 110 for a 95

and page 121 for a 96 - 97

www.jagrepair.com/images/Training Guides/801S - 2000.pdf