88mazdarx7turbo

ive already posted this once but since noone answered after a week or so i decided to post it again.. here it is



ok sometimes in the morning or when its been sitting for a while ill start it up then the rpms drop real fast and stalls and it keeps doin that for about 10 more trys then eventually i get it runnin with tons of white smoke coming out the exhaust.. and sometimes when it starts ill go driving and if i tap the gas kinda fast the rpms will drop about 2000 really fast then go back up.. i was wondering if the tps would be the cause??? thanks tim

Turbonut

iTrader: (1)

Tim-I would check the TPS just to be sure. If you've got a multimeter it will take just a few minutes. You can check the ohm setting at idle, as well as the TPS travel for any fluctuations. If you don't have one it would be great investment as you'll always find a need for it. Radio Shack, Sears, etc. That way you will be able to eliminate the TPS if it checks out.

apreludem

no idea, but mine did the first part of your problem and i had a vac leak.

Bloodangel

Did you check your thermowax? Mine was rusted together, so it did not work at all and would not hold an idle until it warmed up.

88mazdarx7turbo

it idles fine except it kinda souds like a vac leak but ive checked it out and havnt found one.. ill check again i guess