first off i have a 06 coupe 5at and turboed. my issue just started last thursday. i was driving home from ohio when this started. i would give the car some gas to pass cars or climb a hill and when the boost gauge read 10 vac the car would bogg and lose power. figured it was bad gas so we stopped to fill up. went to turn the car on and it wouldnt start. after about 20 min it started but barely idled. i got pissed at the ruff idle and just put it in drive. after about foot the idle smoothed out and ran fine.


when i drive the car for more then 15 miles, it takes it forever to start. first start up of the day it cranks a couple of times then fires right up. car has new plugs (step colder) and fuel pump (not stock). im out of ideas and any help will be great.

 

Need more details.
What are your AFR's when idle/boosting?
What is your turbo setup?

Could be a few things from what your describing...

Last paragraph points to fouled plugs/faulty fuel pump/low battery voltage-

Need better description or a vid to help. GL

 

a/f are normal (14.5/11.5). battery is maybe 6 months old. im runnin a turbonetics single kit. changed the pump 2 weeks ago and plugs the other day

 

so a little update, car is still having starting issues. i was paying close attention to my water temp and found out that the car wont start when the temp is above 140 deg. car has thrown a few codes. i would clear them but keep gettin different codes. i have thrown these codes. P0300, P0171, P2A00, P2A03. these codes are not consistant. i have changed my plugs, maf, fuel pump, o2 sensors. im runnin out of ideas.

 

still havent found the cure yet. i have changed my coolant temp sensor and bot cam position sensors. today the car killed over on me. i was sitting still and the temp hit 220 deg and the motor stumbled then died. i dont know what to do anymore. does ANYONE have any ideas?

 

Was going to say temp sensor but seems like you already changed it. What about your coolant level? Also any sort of radiator leak?

 

Did you try putting the oem fuel pump back on? May be it has something to do with the new pump

 

coolant is full and theres no leaks. i dont have the stock pump anymore. i was running a walbro but switched to a deachworks when that went out. when i turn the key to the on position you can hear the pump prime

 

Clean your MAF and TB. Your TB might be going bad as well or it might be dirty and needs cleaning. A few threads on how to clean it. After that you should do an ECM reset and the 3 resets we do for TB forget what they are called.

 

tb and maf are about 5 months old. i got cleaner for the maf but found out for some reason my fans arent kickin on. maybe the ecu is throwin it in limp mode cause of it. im not to smart on electrical so how can you check the fuses are good?

 

Yes fans are controlled by the ecu. It can mean 3 things:
ECU bad
Fans bad
Fans fuse blown

Fuses are cheap, better to just replace them if you don't have a tester but for a visual inspection just take it out and look in the middle. If the metal strip doesnt look deformed or melted then most likely the fuse is good, if it does look deformed/melted then a blown fuse.

I think its either the fuse or fans.

 

so i did my checks and found out the main fan commited suicide. so now im using my ac fan as the main one since i dont turn on my ac right now and i need to get a new condensor. one issue down, who knows how many more. thanks for the info onevoice

 

update: still havent figured out my starting issue. still clueless on the issue

 

so it wasn't the fan?

Did you check the fuse?

 

For the fans - look into getting some better replacements. The FLEX-A-LITE fans are very good fans.

What EMS are you using? I have heard some people have problems with some piggy back systems and odd starting functions.