NO CODES, Changed temp sens, why still hard start when warm?
#1
NO CODES, Changed temp sens, why still hard start when warm?
Got a 01 A4 2.8L, starts fine when cold(now that the weather is getting warmer, even cold start is a little hard sometimes.) If i shut it off and let sit longer than 10 min, i have to crank it between 5 to 10 times before it fires up and when it does start, the rpm's rise very slowly, need help!! NO CODES, just got scanned. changes plugs, cleaned MAF, changed fuel filter, and I did change the coolant temp. sensor. Any ideas?
#5
RE: Changed temp sens, still hard start when warm
guesses... how does it idle?
maybe the idle controller needs to be cleaned.
vaccum lines replaced.
throttle body cleaning / adatation
check MAF accuracy
tune up stuff:
new spark plugs
plug wires
I'll be curious what you find since my car isn't starting on the first crank now about 10% of the time.
maybe the idle controller needs to be cleaned.
vaccum lines replaced.
throttle body cleaning / adatation
check MAF accuracy
tune up stuff:
new spark plugs
plug wires
I'll be curious what you find since my car isn't starting on the first crank now about 10% of the time.
#6
RE: Changed temp sens, still hard start when warm
thanks for the reply, every once in awhile it will have a really rough idle at startup, i have to hold in the gas or i feel like it will stall, only for a couple seconds then its fine. Theres almost always a strong fuel smell when cranking so maybe im not getting the initial spark but i just changed the plugs and a valve cover gasket(had a little leak). probly gonna clean TB next.
#9
RE: Changed temp sens, still hard start when warm
you have to use Vag-com to check the maf numbers. if I recall correctly you should see about ~3-5g/s at idle but search on that and you should find the real numbers.
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doomwalrus
Audi A6
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05-07-2012 01:13 AM