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View Full Version : revving high and backfiring,hesistating!!! HELP


Wes-s13
06-28-2010, 04:36 PM
alright i have a kae (240sx) and as of yesterday,i park and my rpms decide to go back up to 2k and stay there till i take off,then when i got on the free way it was hesistating like wasnt giving it gas but i have half tank,then when i down shift it back fires it did all this before but not the back fire,and goes away when it wants to!

and yes i searched!!!!


THINGS I REPLACED, AND DID!

1.spark plugs and wires maybe 4 months ago
2.fuel pump and filter maybe 6 months ago
3.flushed the radiator,and the bleeder valve,not sure if that helps any
4. i had 2 hoses off and plugged them back in but nothing still!
5. checked for more vac leaks
6. replaced the maf with a used but good working one




need help please!
no negative comments!

Sileighty_85
06-28-2010, 05:52 PM
Check ECU for codes and Check IACV and Coolant temp sensor (CTS)