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?

RE: Changed temp sens, still hard start when warm
 

Go get the codes read and post them back here.

RE: Changed temp sens, still hard start when warm
 

I stated in my post that I am getting NO CODES. Any ideas? I dont think it is a fuel pump issue but not sure. maybe coils.

RE: Changed temp sens, still hard start when warm
 

any ideas? anyone?

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.

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.

RE: Changed temp sens, still hard start when warm
 

how do i check the MAF, OBDR? If so what numbers should i see?

RE: Changed temp sens, still hard start when warm
 

i had hard start on cold or warm engine did not metter. but just hard start, after the start idle was perfect. changing spark plugs helped out.

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.