My brother drives an '05 Dodge with the Hemi in it. Yesterday his wife was driving back home when it just quit going. I can floor the gas pedal with it running and it does nothing but idle. It idles good when it is warmed up but idles roughly when you first crank it after a cool down. A light came on the instrument cluster that looks like a lightning bolt. The manual claims it is for an Electronic Control System Problem. Anyone here have this problem before or know what exactly is wrong? My guess is its a sensor since it happened suddenly with no warning beforehand. So, before we go diving under the hood this evening I am hoping someone here might be able to save us some time and money.

Thanks!

 

Check your fuses, maybe something went with that... other then that it would seem to be a position sensor in the pedal or motor in the throttle body.

 

That is limp mode.

You get the electronic throttle lamp but many, many things can cause that.

While I was tuning I used to get it all the time and there was never anything wrong with the ETC.

It was usually something to do with the MAP sensor.

Do you have a check engine light and/or any P codes?

 

The check enging light has not come on. I am going to check to see if it throwed any codes tonight when I get off of work and try to diagnose the problem.

 

Ok, the truck gave me these two codes. I dont undestand the torque performance one. Anyone have an idea what that means?

P2172-HIGH AIRFLOW / VACUUM LEAK DETECTED (INSTANTANEOUS ACCUMULATION)
P061A-ETC LEVEL 2 TORQUE PERFORMANCE

Thanks!

 

Does he have any mods done? The throttle blade is probably getting stuck from all the carbon...i'd remove it and carefully clean it with CRC carb/brake/throttle body cleaner. Use a new gasket..

This is what I got from p2172 "Throttle Actuator Control System - Sudden High Airflow Detected". The sudden flow could be the TB gasket (doubt it, unless your brother removed it before and used the old gasket) or from the throttle blade being stuck and then suddenly unstuck...but that's just a guess.

The P061A code...could be caused by the same thing but I wouldn't worry about it. Fix the above issue and this code will most likely go away..

 

I did when I do when I'm out of my league, I emailed my uncle in N.Y., a retired chrysler mechanic, on your P2172.

When Monitored: Ignition on and engine running with no MAP Sensor DTCs.
Set Condition:</B> A large vacuum leak has been detected or both of the TP Sensors have failed based on their position being 2.5 volts and the calculated MAP value is less than the actual MAP minus an Offset value. One trip fault and the code will set within 5 seconds. ETC light will flash.
Possible Causes
VACUUM LEAK
RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT
(F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
RESISTANCE IN THE (K1) MAP SIGNAL CIRCUIT
(K1) MAP SIGNAL CIRCUIT SHORTED TO GROUND
RESISTANCE IN (K900) SENSOR GROUND CIRCUIT
RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT
(F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
RESISTANCE IN THE TP SENSOR SIGNAL CIRCUIT
TP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
RESISTANCE IN THE (K922) TP SENSOR RETURN CIRCUIT
MAP SENSOR
TP SENSOR
PCM