1992 lincoln town car executive series

Asked by Apr 12, 2016 at 08:00 AM about the Lincoln Town Car

Question type: Maintenance & Repair

What would cause my car to cut off in overdrive bit
in only cuts off going up or down hillshills

5 Answers

11,725

First possible cause is fuel pressure / fuel pump. Check the pressure at the fuel rail 32-38psi the pump is in the gas tank it might broken pickup line, that's why it "cuts" off going uphill or downhill, after 24 years pumps get weak. Does it run and drive perfect unless its in overdrive?

Yes in drive it runs perfectly smooth no problems at all

11,725

OK this is sounding like overdrive transmission Shudder, lowers speed and jerks, and chatters. How many miles on the transmission?

Same ammount as the motor 37,488

90,775

So if I understand you correctly the overdrive turns off when climbing a hill, that is normal, and when decelerating down a hill, this would also be normal if the computer was reprogrammed to use engine braking under full deceleration like going down a hill, my rig does this also, kinda spooked me at first, just cruising along and drop down a hill and the trans drops out of overdrive, road flattens back out and right back into overdrive it goes. My tranny now has 145K on it and so far no problems, just keep it serviced.

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