car starts up fine then i drive 5 mins down the road. park up get out go in shop buy a drink get back in the car and it wont start up! it takes a few times and it will start back up! sumtime i gota push the gas pedal down y im turnin the key then it will fire up!
i had a full service! nuffing changed!
took it to the garage anf the put new eng man senser on and cleaned icv-ITS STILL DOIN IT! they put my bm on there computer couldnt find any probs!also revs will go up and down from time to time!
can someone tell me wot it cud be! its costin me loads of money and problem still there! cheers
Could be the coolant temperature sensor or stuck thermostat - reasoning is as follows.
Cold Start - mixture is enriched - no problem.
Hot start - mixture enriched due to coolant temp sensor telling DME that the engine is cold so the beast won't start until you push the gas pedal down, which allows more air into the engine - so it starts. Erratic idle due to overly enriched mixture (engine hunting.)
When it dose starts up, is it a rough start??
If it is It could be your fuel injectors, my dads 91 mercedes dose kind of the same thing but it starts up.. when its cold car stars fine drive it to the store, come back car starts really rough or from second time because his seals on the injectors are worn and it leaks gas. Also maybe your mass air flow sensor is going out? it cant tell ecu how much air needs to go in, so it prolly takes too much or not anough air. That causes the problem sterting.. Starter? i had similar symptoms to yours when my starter started fuking up. My car would start up perfectly in the morning then i would park it and come out later and would take me a couple times to get it to start. These are my guesses
Last edited by Russian318; 11-28-2008 at 04:36 AM.
The car will only overheat if the thermostat is stuck closed - if it is stuck open it will take longer to reach operating temperature, resulting in slower warm up, rich mixture and poorer running until the engine gets warm. Since a relatively small vacuum leak can cause similar problems, the next step is to pull the codes from the engine....
i went to a garage to day and told them my problem! stright away the guy said crank sensor! he said when car is cold it read the fly wheel normally! but wen hot the sensor wont be able to read the fly wheel,coz sensor is faulty... so car wont start untill cooled down abit! he said its 100 per cent that! he also said get new icv! as u cant just clean them!not as easy as that but peop;le dont relise that! he said throw that one away n just get new one! he said ave u got a warning light on ur dash light up! i said no! he laffed and said the guy u got the bmw of took the bulb out! he laffed and went on to say i no all them old tricks.. ha hahaha.
let me no guys if this all makes sense to u petrol heads!
and il post the out come wen i got new sensor fitted!
il be happy if this will help other peeps with this prob! and have no clue what it is!
i no the feeling wen ur bimmer wont start at the petrol garage and u look like a prat front of people! lol
im sorry bro (german speed demon)
its just gets on my nerves when people
dont type properly. it makes it hard for all
of us to understand what you are saying.
so please take a few seconds extra and
type so we can understand what you want
thankyou. and my apoligies to everyone for being "rude"
wot do u mean check ur bulbs? icar has still been doin it took it to garage and done a test on eng man sensor is new and show one reading wen car is off...ie -55 and wen car started read another... ie -125... they say i got earth problem in the car somewhere and they said gods nos where! and its reacting with my sensors. WHAT DO I DO. DONT WANT TO SELL CAR
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