please helP!!!!!!!!!!!!!!

[Tpenner93]

so i was driving to my buddies place today, its a ten minute drive from my place, i pulled on his drive way and i noticed my transmission was not down shifting when it should, when it did downshift the gears were all solid, but it was taking for ever. i stopped the truck and put it in park, and the truck kept a constant idle at 3000 rpm. Any ideas what the issue would be? could the electric choke be stuck? thanks for any input

 

[kimcrwbr1]

check that the throttle cable is not sticking you dont have a choke if your talking about a 93 it could be several things. Do you get a check engine light could be a sensor or IAC motor. Disconnect the throttle cable and see what it does or tap the pedal and see if it idles down. Run the codes if the throttle cable is good and get back here with the results.

 

[r1hatman]

Check your vacuum lines. I don't know about yours, but mine had a vacuum hose that connected to the tree behind the intake and ran to the tranny. It was off one day and it would not up shift until it revved real high. I would start there. Good luck.

 

[02RangerXLT]

x2 on the vacuum lines... one got busted on my pickup, and it made the RPMs go up and made it shift at weird points too.

 

[Tpenner93]

i checked the vacuum lines, all seem to be intact, when i pull one off the rpm climbs higher yet, throttle cable is not sticking, idle screw is set low as usual, any other ideas?

 

[Tpenner93]

idle sensor???

 

[SMTGREG]

Check the voltage at the gray with white wire on the throttle position sensor with the key on it should be less than 1 volt at closed throttle. If not suspect throttle sticking open or bad sensor. If nothing wrong there it's probably a sticking idle air controller.

 

[Tpenner93]

checked voltage. was around a half volt. check engine light was on, only code that came up was for a burnt out o2 sensor.....? i'm lost

 

[Tpenner93]

pulled the connector for the mass today, rpm dropped instantly, would a dirty mass sensor cause this?

 

[kimcrwbr1]

clean it and reset the computer by disconnecting the battery for 1/2 hour. Then run it for 20 minutes at medium speed to set the new values. That would be nice if that was all it is run the codes again to see if anything else pops up.