hey guys i have just had an air to fuel and a vacum gauge install at my local race shop. after they installed it and i left the car will die after a complete stop. i looked around to see if any vacume lines were missing or not connected. everything looked fine, but the car wont idle i dont know if they did somthing wrong or messed with it i have no time to look for this thread so im sorry if this has been talked about. there not open and i have to go to school and work. please let me know any ideas.

 

Try resetting your ECU. Turn off the car, unhook the negative terminal from the battery for a few minutes, put it back on and start it up. Let us know.

 

Hopefully they just T'd into a vac line, and didn't mess anything up. Do the battery reset first, and then let us know...

 

no nothing at about 800 rmp the car shakes violently but it idles just really rough it never used to do that. when i drive it dies at a stop?

 

Skip school and take it to a shop

 

yeah i dont know what it could be i stumpd. but thanks anyway guys. ill see what they say ):

 

Sounds like a major vaccum leak check all the lines especially the ones they t-ed into also how did they connected to the A/F gauge if they did that bad then the ECU may not be getting a good reading from the 02 sensor and that can cause issues as well.

 

hey guys im back from a diag check and they said that i have a random missfire and that its running lean. any suggestions?

 

Well, what does that AF gauge say? That'll tell yah right there (if it was installed right).

 

it probably won't say much unless it's a wideband.

check your wires to make sure you're not arcing, maybe pull out your plugs and give them a quick visual inspection to see if you notice anything out of the ordinary.

double check for vacuum leaks. when i put on my RRM crank pulley i somehow screwed up a vacuum line on my car when i was putting the belts down from the top of the engine bay and that was causing most of the symptoms you seem to be experiencing. if you were misfiring you should have been throwing a CEL... were you? if it's a vacuum leak more than likely you will NOT have a CEL.

 

Also have the Idle Air Control valve or IAC checked.

 

hey guys just thought i would post something real quick to let you know what happend. well. when they were drilling through my fire wall they drilled the a hole in my brake booster and that caused my o2 sensor to go crazy due to the vacume leak. but they replaced it for free and hopfully they did the job this time. thanks for all the replys.