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  #11  
Old 09-30-2010, 11:37 PM
JoeDodge JoeDodge is offline
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The problem area is at the transmission wiring connector. It is located on the left side of the transmission, just rear of where the shifter goes inside of the transmission. 7 or 8 wires. You squeeze two tabs on the connector to release. Do not mess with these wires yet. (you may temporarily fix the problem) Unplug the middle connector on the pcm. Pop the black cover off the connector. This exposes the wires that go into the connector. The pins are numbered on the face of the connector. On pin 31, there is an orange wire. This is the wire that feeds 5 volts to the trans. Key off. Using an ohm meter, measure the resistance between this orange wire and ground. Should be greater than 200-500 ohms. Just make sure it is not less than 20 or so ohms. If no meter is available, cut this orange wire 2-4 inches downstream of the connector. Connect every thing up (except the orange wire) and see if the engine runs. If so, touch the two orange wires together. If the engine dies, the 5 volt wire to the trans is shorted. This trans pigtail is available from a Dodge dealer. I can get you the part # if needed.

The "no bus" means that the cluster is not receiving information (rpm, coolant temp, oil pressure, etc.) from the PCM. JoeDodge

Last edited by JoeDodge; 09-30-2010 at 11:39 PM. Reason: more info
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  #12  
Old 10-02-2010, 10:25 AM
dad22153 dad22153 is offline
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Thanks for the information. I will test the wire as you suggested. I've also sent the ECM out for testing to see if it's functioning properly.
Can you tell me if the "no bus" is from a loose wire or connection (i'm assuming it is), and where is the most common place to look for problems. Once again, thanks for your help.

Dave
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  #13  
Old 10-19-2010, 02:29 PM
dad22153 dad22153 is offline
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OK...
I finally got her to start. It appears that the ECM was the problem. BUT...now I have another issue.

When I step on the throttle, the engine revs for about 10 seconds before it comes back down to idle. I've replaced the old TPS with a new one, and it does the same thing. When I remove the the TPS from the throttle body (with wiring in tact) the engine responds normally. Is this possibly a programming issue, or did I not install the TPS correctly?????

Dave

BTW...I am getting a Check Engine light, and need to pull the codes.
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  #14  
Old 10-19-2010, 09:26 PM
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The tang on the throttle linkage needs to catch the tps , so as soon as the throttle starts to move the tps starts to process the signal .
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Old 10-19-2010, 11:06 PM
dad22153 dad22153 is offline
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Quote:
Originally Posted by Toms Blue Ram 1500 View Post
The tang on the throttle linkage needs to catch the tps , so as soon as the throttle starts to move the tps starts to process the signal .
Yes, I made sure I installed the TPS where there is slight pressure on the actuator when bolted up. I'm wondering if it also might be the IAC...
I need to pull the codes to see what's happening...

Any suggestions are welcome. Thanks!

Dave
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