Every now and again my WRX wont start for ages. It just cranks, and cranks, and cranks...... and cranks........ and cranks ............ and cranks ............. and then starts !! Horray!
This has only happened 3 times in 3 months but what the hell could cause it.
Twice it's happened after a 10-15 mins soak and the other time it was cold.

Recommendations please.
Cheers

 

BTTT - anyone ?

 

My uk99 has done this intermittantly for the three years I've owned it, and if you search you'll find it's not an uncommon 'feature'. I think some people have changed cam / crank position sensors and found that sorted it, I've just left mine alone as a) it only happens occasionally b) it always starts after 10secs or so if I keep cranking with the throttle wide open.

If it happens regularly you'll want to sort it though as catalysts don't like having petrol poured into them.

 

My MY97 does this as well, anyone got any clearer suggestions than swapping the crank sensor?

Cheers,

Mike

 

Mine has done this twice in the last 3 days... crank it with no accelerator pressure... it will normally fire straight up... but twice recently its cranked for around the 10 second mark then fired...
I keep on putting it down to lack of using it and short journeys... but will bear the crank and cam sensors in mind...
How much are these each for a MY00...?

 

my my95 uk was doing it aswell. just put a second hand cam sensor in from grade a £20 that sorted it

 

We have had this problem quite a lot it is usually worse when the car has been started and driven then left for 5 or 10 mins when you get back in to start it it wont. We have generally found either the crank or cam sensor to be faulty but only when heat soaked.

 

Mine takes always at least two cranks for it to fire up! Never sounds good and doesnt instill confidence, not too much of a problem on a warm engine. I just leave my foot of the acc and turn the key! I have a MY93.

 

I dont know if this will help anyone or not. But I found that the earth wiring could have been better.
Have fitted extra earthing cables to struts engine etc, IMHO car runs better,
has never faltered on starting either
( cant remember if I had a problem without it as have had it installed almost 2 yrs)

Other people have fitted earthing kits of different descriptions and found it generally worthwhile.
(tho this mainly seems to obviously affect the older classics)
But its like everything on SNET, some things work for some and not others.
Still, thought i'd share it.

 

Mine used to do this, found two of the coil packs were faulty, replaced these and the problem was solved.

 

I found that turning on the ignition and then waiting for the fuel pump to finish priming before cranking makes it start instantly - I had the same problem as you guys before...

 

I had same on mine, as a test when it is just cranking and not firing pop the bonnet and disconect the crank sensor couple of secs and reconect if it fires up on the button replace the crank sensor

 

Cheers guys, I'm sure all those with this issue will be modding their set-up as we speak.
Good advice all round as usual........ cheers.