Question about 1985 Ford Thunderbird
One of several possible issues. Check for any vacuum leaks. If you have an external fuel filter, have you replaced it ? If filter is internal with fuel pump, inside fuel tank, may want to do a fuel pressure test first.
Have you checked for any codes in your engine control module ?
Posted on Jul 25, 2017
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Posted on Jan 02, 2017
the service engine light is prob due to the oxygen sensor being damaged, not replace or you having the catalytic converter taken off---just messing with you. start at auto zone and have then do a free code read then go from there. you should troubleshoot the low fluid level switch for your brake fluid. unplug it and see if the light goes off and if it doesn't jump the two terminals on the harness. oh the car will have to be running. Let me know MrRodneyLong@gmail.com
Posted on Jul 04, 2008
SOURCE: idle speed
From what I can tell with the info I have It has the sound of the IAC it messing up and this is a pretty common problem sometimes you can remove it and clean it but you will need to replace it in the near future.Iac stands for Idle air control
on the other user the first thing you must do is fix the vacuum leak then check the code and if it is a P0401 or so this is caused by the DPFE and it will need replaced it too is a fairly common problem and will cause alot of different drivability concerns.DPFE stands for delta pressure feedback sensor
Posted on Oct 04, 2008
Electronic control module
(ECM) computer circuit
problems - faulty
(Transmission) Input or
output speed sensor -
circuit problems. (Speed
sensor signals do not
agree with with selected
Torque converter clutch
(TCC) - TCC is
mechanically stuck on.
Vehicle anti-theft system (VATS) problem. OR Transmission Temperature Sensor (TTS) - short circuit problem in sensor or wiring. OR Transmission fluid temperature high.
Posted on Apr 23, 2009
It sounds from your description that the fuel pump is weak. To check the fuel pressure you need a fuel pressure test gauge for fuel injection. Attach the gauge to the test port schrader valve and turn the ignition to the on position. Record the reading. Now start the engine and record that reading. Unplug the pressure regulator vacuum line and record the reading.
The pump should have pressure with in specs but if low, start with the installation of a new complete pump. It is located in the fuel tank. Also replace your fuel filter.
Hope this helps you.
Posted on May 12, 2009
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