Transmission/Electrical issues?
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New User
Joined: Feb 2011
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Transmission/Electrical issues?
Just bought a 1994 f150 fairly cheap and it runs awesome. Has some slight issues tho... pushbutton 4wd does not work no lights on dash and nothing happens when buttons are pushed. Also trans will not downshift on its own. If left in drive positon truck tries to start out in drive from stop sign. Also will not shift into overdrive. But light does not flash. Remember my step dad having on do the same thing a few years back but i dont believe he ever fixed it just maually downshifted at stop signs and upshift as well... Maybe someone else has experienced this and could give me some insight as to where/how to look for the problem... Thanks in advance for any help
Laughing Gas
Joined: Dec 2007
Posts: 959
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From: Imperial, MO
Since the lights aren't even illuminated on the push-button 4WD, I'd start by checking the fuse for that circuit.
The transmission issue sounds like a bad MLPS (auto parts stores will call it a transmission range sensor or a neutral safety switch).
-Rod
The transmission issue sounds like a bad MLPS (auto parts stores will call it a transmission range sensor or a neutral safety switch).
-Rod
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New User
Joined: Feb 2011
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Checked all fuses already and they are all good, going to check relays now with a meter, did a self diagnostic test and pulled codes
637 TOT sensor circuit above maximum voltage
621 Shift solenoid #1 circuit failure
622 Shift solenoid #2 circuit failure
629 Converter clutch control circuit failure
626 Coast clutch solenoid circuit failure (E4OD)
637 TOT sensor circuit above maximum voltage
621 Shift solenoid #1 circuit failure
622 Shift solenoid #2 circuit failure
629 Converter clutch control circuit failure
626 Coast clutch solenoid circuit failure (E4OD)
