I have a 2005 dakota, what is a solenoid c malfunction.

hello
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Cold be a few things. First is to do a cylinder compression test. I f they are good, could just need a tune up. Could also be a transmission problem. Have the codes read. Slow pick up could be shift solenoid. Put the shifter in low gear. See what it does. Manually shift it.

Bert, look in your manual for an over drive fuse/relay and check them as a first step, could be a faulty 3/4 solenoid. Take it into a good shop and have scanned, diagnosed and estimate for repair. Check the attached links,instruction and guides, Good luck
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No overdrive Help
3 4 shift solenoid not going into

lr solenoid circuit problem

don't forget the massive issue dodge has with mid and high end equiped dakota durango and ram all you listed that is malfunctioning are in some way controlled by ctm or body controller,also on early models they had to reroute a wiring harness because it was being chaft by the pedals.

CHECK OUT http://www.obd-codes.com/p0700 & P0740 Torque Converter Clutch Circuit Malfunction

Yeah, generic "circuit malfunction" codes, it's a bad solenoid or two or valve body, either of which can be fixed by a HONEST transmission guy with high end diagnostic gear CHEAPER than a new tranny. OR...you can check solenoids yourself as you replace tranny fluid/filter, new fluid and filter did it for me once

solenoids are located it the valve body ,none are external

Assuming that your battery is not dead, and that you have checked the battery connections, the most likely problem is a bad starter solenoid and will need a new starter.

CODE PO449 - EVAP VENT SOLENOID CONTROL CIRCUIT MALFUNCTION.SOUND LIKE EVAP VENT SOLENOID HAS FAILED OR A BLOWN EVAP VENT SOLENOID FUSE.