Startup failure
 

Hi guys,

I have a 2003 Rover 75 2.5L V6 and have been driving it for the past year without any major issues.

Yesterday i drove about 50km to pick something up the car ran just fine with no signs of problems.

I turned the car off and loaded some things in, after climbing back in and starting the car i noticed an unusual sound sort of more deep and rumbling it also vibrated more then usual so i turned the car off again after about a minute of listening.

I tried to re start it right after and it would not start again, it turned on for about 5 sec until the revs fell to 0 and i had to turn it off again.

This reminded me of cold starts i had in the morning every couple of weeks but it would always start right after the 2nd try.

This time it did not i tried about 5-10x waiting a couple of sec between each try and each time the revs fell to 0.

Then i had the idea to wait 10-20min and try again which luckly did work and i drove home fine, it also started fine later that day.

The only thing that was of interest that day was that i filled in fuel before taking the drive and i filled it to 100% which i usually did not do most of the time i fill it to 50-60%.


What was the problem here has someone had the same issue is some part going to fail soon?

Thanks for all the answers.

Failing crank sensor? - when it heats up a failing one will stop working - once it cools off it starts working again. If it is the crank sensor it will fail completely and she wont start. If this happens a good telltale sign is the rev counter/tacho needle will not move when you turn her over as the ECM is not getting data from the sensor.:shrug:

Aren't you thinking of the camshaft position sensor here Martin?
My first thought Franc is the common problem of loosening of the fuel filter. Lift it up just enough to check whether the securing clip has been fitted. If you search the forum for "FFS" or "orange clip" you can read all about it. :}

Simon

Does the petrol engine have a cam sensor ??---:shrug:

I hope so …….. I fitted a new one to mine ! :}:getmecoat:

I had a similar problem with my V6, and fitted a new camshaft position sensor. Been OK since.

I was never sure about the rev counter moving during cranking/starting, though. I don't recall mine ever doing that, with the old or new sensor! Should it?

I always though they worked on the Lost Spark principal.--:shrug:


( Diesel owner. Lol. )

That's the 'wasted spark' principle and applies only to the 1.8 litre engine. However both the 1.8 and V6 have a camshaft position sensor. It's there to time the fuel injection according to RAVE. It has nothing to do with the spark. :}

You even have one on your diesel!
"The CMP sensor is only used on start up to synchronise the ECM program with the CKP signal. This is to identify number one cylinder for correct injection timing."

Simon