hi guys ive got a problem with my jdm 95 wrx, when i start it up from cold most times it start ok but if you drive it 10 mile stop it it wont start agin, its cranking over ok, fuel pump is primed, if you keep trying it some times it take 10 min to get it going again and time it will start no trouble, it some times wont start when cold you never can tell if its going to start or not, any help from you guys would be a help, oh yer and ive had the crank and cam sensor out and cleaned buy makes no diffrents, help need asap

 

try seeing if a fault code has appeared, or could be the engine temp sensor this affects cold starting, hope this helps

 

most likely crank sensor.. possibly coolant temp sensor but rad fans will be on when engine is cold if it is coolant temp sensor..

Simon

 

the fans never come on unless your in traffic, im not gettting any codes up and never seen the light come on yet, its doing my head in as well as make you look a twit when it dont start at the petrol pumps

 

it normal starts fine and run like a dream when cold its only mostly when its been driven its a pig, but sometimes it goes for week with no trouble

 

crank sensor failing...

 

do you recon so? as ive been told the ecu needs only a signal fron cam sensor water temp sensor and fuel pump? have you heard of this?

 

no needs crank signal too... this is main signal for spark and fuel injection, as well as several other sensors ..

 

so why is it its not coming up on a cel check? how much are these new? is it worth fitting a second hand one? has any body else ever had this trouble?

 

When my crank sensor was dying, my car would also fail to start. I wouldn't see any check engine light come on, but when I checked for codes I found the Crank sensor code stored.

Did you check for codes or you just looked to see if the CEL light was on?

 

i checked for codes but the light didnt even light up may be the bulb has gone will have to check, so when yours was dieing what did the car do?

 

the usual problem with the CEL is that the car won't start and the error code is stored.. then the car starts and no CEL as the error is not current. ie. the engine started.. it should be there in the history.. does the CEL come on with ignition when you turn the ignition on but not the engine.. if not then the bulb is at fault etc..

Simon

 

must be bulb then mate as it dont come on when i turn the key when the rest of the lights are on i must look at that asap and see whats stored,

 

hi guys just had the car to bits and replaced the cel check bulb, its only coming up with one code witch is 45 i think that is pressure sensor, where is this sensor and what do it pressure? please help

 

hello
it could be due to your scooby flooding,the next time it does not start try putting your accelerator pedal to the floor and try starting then,this gets rid of the flooding problem and starts the car.

 

no mate ive tryed that, im getting to the stage im fed up with it now cos you never know if your going to get home or not, ive got to find out what 45 item is and where it is on the engine, thanks for ya help bud

 

its the brown sensor with black tube on buy the boost solenoid

 

You are decribing a warm/hot starting problem. I'd say temperature sender is the problem.

 

ive same problem on mine m8 n its the crank sensor failing.

Do a search on previous posts and read through about crank sensors

Most will say that they always act up in the most embarrisin of places lol, and at the time it aint funny (well not to the driver anyway)

 

we are all red in the face and shouting crank sensor at the screen

 

lol