please help

boarderkidd11 · Apr 25, 2011

i have a new prroblem my 2001 dodge ram 1500 it is running rough i cant get it to idle at the reccomended rpm"750" i reaplace the tpc and it ran at 1000 for a good ride then went back down to 600 what could cause this? my engine light has also been going on and off i checked the code it was p0123 and i also changed me tpc what else can i do to fix this?

txbass06 · Apr 25, 2011

There's an Idle Air Control sensor located on the back of the throttle body. Try pulling it off and cleaning and see if that helps any.
Is the truck running good other than the idle issue?

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Bigtman07 · Apr 26, 2011

I'm with mark on this one. Make sure there are no missfires.

boarderkidd11 · Apr 26, 2011

no missfires but i cleaned the throttle body and sensor. now the truck eventuallly got up to idle at 1000. the code p0123 went away now i have a diffrent code po121

adamwilkes14 · Apr 26, 2011

The P0121 is for a TPS...is it blowing black smoke at all when you accelerate? Is the harness for the TPS rubbing against anything on the engine? It could be a bad TPS out of the box, can't say it hasn't happened before.

boarderkidd11 · Apr 26, 2011

i went to pull out the tps and it popped open and cant get it together so i put the old one back in. i had the tps upside downthats why i think the code came on and also i washed the engine and possible could of got water in it. but i still can not get it to idle at the recomended 750 any ideas?

txbass06 · Apr 26, 2011

There's a guy I worked with that had the same problem. Make sure there's an o-ring around the tps when it's on the throttle body. He got sold 3 from autozone without them and were all bad out of the box

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boarderkidd11 · Apr 26, 2011

i have a gasket on there should i change it to the o ring?

txbass06 · Apr 26, 2011

I haven't had mine off but I've never seen a tps gasket for these. Just the o ring. I'll take a pic of a new one tomorrow if that'll help any

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Bigtman07 · Apr 27, 2011

I had mine fall apart in my hand when I took the bolts out. I don't remember there being an O ring but it could have stayed on the TB.

txbass06 · Apr 27, 2011

A new tps should come with an o ring and a gasket. If the sensor has a groove around the base, use the o ring, if it doesn't, use the gasket

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Bigtman07 · Apr 27, 2011

^^^^^Love this guy working at a parts store!!!

txbass06 · Apr 27, 2011

Lol I do whatever I can to help. Whether it be pictures or descriptions or prices

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boarderkidd11 · Apr 27, 2011

ok thankss. i just kept the gasket on. im going to buy another tps hopefully that will help

please help

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