So when my car is cooler and the temperature outside isnt to hot my car boosts fine and there are no problems, but when my car is hotter and hot outside the car doesnt boost worth ****. I have hooked it up to a regular check engine light reader and there are no codes. (waiting for vag-com to be shipped) any ideas? have changed the MAF, oxygen sensor 2, spark plugs and all coil packs. Also does anybody know how many wires are running into the back of the MAF plug?

 

boost leak, when its cold everything shrinks, as it heats up, things expand.
you have an 00, it looks like 1 wire was pulled out from the maf right?

 

do you have a boost/vacuum gauge installed? readings?

 

in 4th and 5th gear i have full boost all the time, when shifting into 1st 2nd and 3rd there is a really loud crackling noise, and there is no boost. waiting for my vag-com to be shipped to see what codes pull up, also I heard that if there is a crackling noise while in boost means that it is getting to much fuel, true?

 

Ya I rewired the MAF and there was only 4 just making sure that was normal

 

Has the TB been changed? Just wondering cuz the waterpump and thermostat are usually done at the same time. If your temp reading is not straight up at halfway then it will tell the ECU to lean out.

 

the temperature gauge is only over half way when i get done driving and the car is off for about 15 minutes then i go to start it at its barely past half way, it goes down after about 30 seconds, the timing belt was changed 10,000 miles ago

 

Do you have a boost gauge?

 

No I need to get one, is a wire clip broken by my fog lights, thinking it is the barometer sensor, what does that do?

 

anyone?