Can anyone help with a scooby 95WRX not starting when warm. It will start ok when cold but if it is warm and is left for anymore than 15 mins it will turnover but will not fire. If it is jump started it will start straight away. Tried new battery, tried resetting ECU but still same prob. Any suggestions!!!

Hi Steve

I have a starting problem with my MY98 UK spec Scooby.

Its happened 3 times in the 6 months I've owned it. Only problem is, it was a different situation each time.

First time was when it had been sitting in the sun in the middle of summer for about 4 hours.

Next time was when it was sitting in coolish weather for about an hour.

Third time it had been sitting in the garage all night.

Each time it just turns over but doesn't catch. After trying a few times it will eventually catch. All other times it has started with no problem.

Getting it checked out by a dealer in next week so I'll let you know if they find anything.

Cheers

Bas

Bas,

The only times I've had a problem with my car starting is when I have kept my key with other chipped keys or both my scooby keys together. I was told with the keys being chipped they do not like it and it can take several attempts to start the car. Since I've kept it on it's own (a different pocket) I've had no problems.
If it doesn't start rub the key on your trousers and then try - really. It worked for me.

Scotty.

It could be the crank position sensor. I had this problem on my 1995 UK car.

It would start from cold but if I drove for about half a mile the engine would not restart. The problem could get worse as well, mine cut out at traffic lights and junctions a couple of times before I had the sensor changed.

Hi Andrew

Thats exactly what is happening to mine, in the last 4 weeks it has just cut out 3 times whilst trying to pull off or sitting in traffic. Does the sensor cost a lot to replace and is it easy to get one as it is a Japanese import?

It could also be the water temp sensor.

Get it check by someone with a Select Monitor

We have it booked in to be fixed hopefully at Graham Goodes, do you think they will be able to check the crank position sensor and water temp sensor??

Steve,
The crank position sensor cost £83.15 plus VAT and fitting.

Not sure if it is the same part on WRX, Pete Croney would probably know.

Andrew

CPS has changed twice over the years, but I am sure that Simon will have them in stock.

They are the same as on the UK cars.

Pete,

I thought that the CrankPS was the same from MY96 onwards? Ie up to MY96 they had integral leads and in '96 they changed over to the current design of having a plug-in arrangement? CamPS seems to have changed at the same time (just as well, the ld design was a pig to change!).

The TPS, on the other hand, HAS changed at least 3 times. The early cars had a 4 terminal unit (3 for the pot plus 1 for idle switch). Then the MY97 moved over to a 3 terminal unit (3 wires for a pot), but for the Phase II engine they went back to a 4 terminal unit but only used 3 wires (D'oh!)

Cheers,

Pat.

Scotty

Rubbing the key on my trouser???

Sounds like an odd one but I'll try it anyway.

Cheers

Bas

Re: Won't start problems
Are the crank position and water temp sensors
easy to locate and change?

Thanks Steve

Steve the crank position sensor is easy to locate, its under the alternator. The water temp sensor is on the water rail under the inlet manifold and is a bit more difficult to reach. You will need to drain some coolant before removing this. Oh... and do it when the engine is cold http://bbs.scoobynet.co.uk/wink.gif

Looking at them will not be an indication of their integrity.

Thanks for all the replies we had regarding this.

We tried the crank position sensor but it was not that, we spoke to Graham Goodes who advised that the water temperature sensor would only relate to cold start probs. We took it into Graham Goodes yesterday who connected it up to their select monitor and found that it was the cam position sensor that was faulty. I hope that this will help someone else as it has taken us over a year to sort. Upto now seems to be ok, we have stopped and started a few times, if it happens again and this hasn`t cured it, i will let you know.