1993 Ford Probe engine control module?

Tiny
MABBOTT
  • MEMBER
  • 1993 FORD PROBE
  • 6 CYL
  • FWD
  • MANUAL
  • 140,000 MILES
What would happen if my engine control module went bad, I recently took my car to a local mechanic and he said that the engine control module was bad and that I need a new one, the reason I am asking is I am hearing a lot of different stories. What is happening is that my car stated off with a small miss I took it to a Mazda dealership and they said it was just a bad cap and rotor I changed that as well as my tps sensor, new wires and crank sensor, and now the car will not start and if it dose it is running really choppy, like it has a really bad miss. I am running out of things to try as well as money to put in to things to try. Please help, Thank You
Thursday, January 8th, 2009 AT 10:40 PM

3 Replies

Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Hello,

OK, you say that you changed the cap, rotor and wires.... Did you think to double and or triple check that the plug wiring was correct. I have found in my experience that when some shade trees do there own plugs and all they tend to mix up a couple wires.
So, first thing I would do is to recheck the firing order......


https://www.2carpros.com/forum/automotive_pictures/188069_93probev6fireordr_1.gif



Usually when a control module goes bad the vehicle wont start at all just turn over.

.
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Thursday, January 8th, 2009 AT 10:54 PM
Tiny
MABBOTT
  • MEMBER
  • 8 POSTS
I have checked the wires time and time again even re ran them just to make sure thanks for your help any more tips would be appreciated, Thank you
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Thursday, January 8th, 2009 AT 11:38 PM
Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
OK,

Has the fuel pressure been checked and also the cylinder compression. Anoter thing to check for is a Vacuum leak or leaks.

Is your check engine light on? If so try pulling codes...

To extract DTCs from the computer for diagnostic purposes, the Self Test connector is used.

Start engine and bring to normal operating temperature. If engine will not start or stalls after starting, proceed with next step.
Turn the key "OFF", then wait ten seconds.
Activate the self test by grounding the Self-Test Input (STI) connector.
Turn the ignition key "ON".
Record all codes received.
Turn ignition "OFF".


https://www.2carpros.com/forum/automotive_pictures/188069_93probetestconect_1.gif



Data Link Connector (DLC)
(Located Underhood)

Analog Voltmeter Connection


https://www.2carpros.com/forum/automotive_pictures/188069_93probetestconect2_1.jpg



Post all codes/numbers here.......

Also,do you still have your old TPS and Crank Sensors? If so put the Old TPS Sensor back on and see what happens. If no change then put Old Cran Sensor back on and see what happens. It doesn't happen often but you can get a bad sensor right off the shelf.
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Sunday, January 11th, 2009 AT 11:34 AM

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