Announcement

Collapse
No announcement yet.

91 GM suddenly died after changing the TFI module and PIP sensor the day before

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    91 GM suddenly died after changing the TFI module and PIP sensor the day before

    Hello and help again,
    Yesterday I replaced the TFI module with a new Motorcraft one along with a new Motorcraft PIP sensor. Car started with no issues after the work was done.
    This morning while driving to work, the acceleration was real smooth. I had gone 6 miles and had stopped at the ATM at the bank for a few minutes.

    I drove another mile and suddenly the car turned off. No sign or indication at all. It was running really smooth. I coasted into a parking lot and called AAA. A few minutes later the car started and I let it idle for about 3-4 minutes and it died again. I waited about 5 minutes and it started right up. I turned it off when AAA arrived. It had ran for about 5 minutes with the AC on. I had AAA tow me home. At home, right off the tow truck it started right up.

    I let it idle in the driveway with the AC on for an hour and ten minutes. It did not cut off at all. Even had smooth acceleration while in park. I started and turned it off 3-4 times and it started with no problems. Four hours later after I got home from work and it has started up twice with no issues.


    The reason I replaced the module and sensor was for the past few weeks it would be slow to start after driving and restarting with the motor warm. It would start and turn over at a normal speed if it sat while I was at work and it cooled down, which would be about 5-6 hours later in a hot parking lot. I wanted to avoid a breakdown at the wrong time.

    The check engine light has not come on.

    Any ideas where to start checking?

    I thank you.
    Mike
    90 Colony Park LS with GT 40 heads and intake. HO cam, 65 MM TB, 67 MM EGR spacer. Has a 75 MM Pro Flow mass air sensor. Borla XS mufflers. 3L55. Shift kit, 2000 stall Tq convertor...Bilstein shocks, front and rear sway bars.
    90 Colony Park LS 64,000 miles all original. 3L55 tow package....front and rear sway bars.
    91 Grand Marquis GS....HO motor..Bilstein shocks poly bushings and police swaybars. This one handles the best.
    70 Torino Squire with M code 351 Cleveland 3.00 has Magnaflow mufflers. Hidden headlights and power windows. All original
    Tags: None
    #2
    Check/replace the fuel pump and ECM relays.

    something that recently happened to me, the plug on the inertia switch in the trunk got crappy and partially melted. In my case, the car didn't shut itself off but it would not re-start. might be worth unplugging yours to make sure the connector isn't melting or just crusty.
    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC grandpa spec white and cranberry

    1984 Lincoln Continental TurboDiesel - rolls coal

    Originally posted by phayzer5
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

    Comment

      #3
      Thank you Gadget.
      I will check into the relays as they were a problem in the past. I also thought maybe the fuel filter may be an issue. It was replaced 1 to 1/2 years ago. The fuel pump I believe was replaced 4 years ago. I guess I should do a fuel pressure check and rev the motor to simulate the driving rpms.
      Thank you again,
      Mike
      90 Colony Park LS with GT 40 heads and intake. HO cam, 65 MM TB, 67 MM EGR spacer. Has a 75 MM Pro Flow mass air sensor. Borla XS mufflers. 3L55. Shift kit, 2000 stall Tq convertor...Bilstein shocks, front and rear sway bars.
      90 Colony Park LS 64,000 miles all original. 3L55 tow package....front and rear sway bars.
      91 Grand Marquis GS....HO motor..Bilstein shocks poly bushings and police swaybars. This one handles the best.
      70 Torino Squire with M code 351 Cleveland 3.00 has Magnaflow mufflers. Hidden headlights and power windows. All original

      Comment

        #4
        Hi Gadget,
        I going to give you the name of " The Box Whisperer".
        I did replace both the fuel pump relay and the ECM relay. The car seemed to start a lot faster. 2-3 seconds verses 4-5 seconds.

        This morning I just got back from driving around in the neighborhood. I drove for 25 minutes then all of a sudden it cut off. While coasting it started right up and I drove on home just a few blocks away. All the driving was done in first and second gear, mostly around 25 MPH. At home I turned it off 3 times and it started right up each time. It has been running for almost one hour now. It has been starting to lope around as it idles the past 10 minutes. The weather is shitty again with hard rain so I don't want to drive it too far. All the roads around here have curbs so if you breakdown and can't find a parking lot to coast in, you are stuck in the road. I'm off this weekend and think I will change the spark plugs, cap and rotor for the hell of it. Should I change the coil? All the sensors (EGT, ACT, O2, EGR, PCV valve and screen, fuel injectors and even the TB was replace with a NOS one, cap, plug wires, plugs, coil, TFI PIP) everything was changed between July and November last year.
        Thanks again,
        Mike
        90 Colony Park LS with GT 40 heads and intake. HO cam, 65 MM TB, 67 MM EGR spacer. Has a 75 MM Pro Flow mass air sensor. Borla XS mufflers. 3L55. Shift kit, 2000 stall Tq convertor...Bilstein shocks, front and rear sway bars.
        90 Colony Park LS 64,000 miles all original. 3L55 tow package....front and rear sway bars.
        91 Grand Marquis GS....HO motor..Bilstein shocks poly bushings and police swaybars. This one handles the best.
        70 Torino Squire with M code 351 Cleveland 3.00 has Magnaflow mufflers. Hidden headlights and power windows. All original

        Comment

          #5
          Coils can go bad, and they can get heat-sensitive. I remember a boating trip as a kid where we had to ice down the coil to get it running again.

          Check the inertia switch plug too though. I've never heard if it happening to anyone else, but maybe you can be the other guy that had that trouble. I have seen the tank connector get all melty before tho. '91 should have access just by getting under the car. Unplug it from the front of the tank and make sure its not all screwed up in there.
          86 Lincoln Town Car (Galactica).
          5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

          91 Lincoln Mark VII LSC grandpa spec white and cranberry

          1984 Lincoln Continental TurboDiesel - rolls coal

          Originally posted by phayzer5
          I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

          Comment

            #6
            Thank you again,
            I'm going to work on the headlights on the Colony Park this weekend. I'm going to put them back to stock.
            It has non working HID lights in. It has been my daily driver for the past two weeks.

            Where should the headlight relay be located at? I am stupid as dirt when it comes to electrical.
            If I have success, I will start on the GM.

            Thank you,
            Mike
            90 Colony Park LS with GT 40 heads and intake. HO cam, 65 MM TB, 67 MM EGR spacer. Has a 75 MM Pro Flow mass air sensor. Borla XS mufflers. 3L55. Shift kit, 2000 stall Tq convertor...Bilstein shocks, front and rear sway bars.
            90 Colony Park LS 64,000 miles all original. 3L55 tow package....front and rear sway bars.
            91 Grand Marquis GS....HO motor..Bilstein shocks poly bushings and police swaybars. This one handles the best.
            70 Torino Squire with M code 351 Cleveland 3.00 has Magnaflow mufflers. Hidden headlights and power windows. All original

            Comment

              #7
              In stock form there is no headlight relay. For aftermarket stuff, no idea, but I would expect to be able to find it by following the wires.

              I like relayed headlamps myself, but I have a relay setup with stock lights. Gives better voltage to the headlights, but my harness remains un-modified so in case of problems i still have the original headlight plugs hanging there that I can connect. My relay harness was built in such a way that it simply plugs in place of one of the lights in order to drive the relays, and it has it's own set of output sockets to plug the lights into.
              86 Lincoln Town Car (Galactica).
              5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

              91 Lincoln Mark VII LSC grandpa spec white and cranberry

              1984 Lincoln Continental TurboDiesel - rolls coal

              Originally posted by phayzer5
              I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

              Comment

                #8
                Thank you.
                90 Colony Park LS with GT 40 heads and intake. HO cam, 65 MM TB, 67 MM EGR spacer. Has a 75 MM Pro Flow mass air sensor. Borla XS mufflers. 3L55. Shift kit, 2000 stall Tq convertor...Bilstein shocks, front and rear sway bars.
                90 Colony Park LS 64,000 miles all original. 3L55 tow package....front and rear sway bars.
                91 Grand Marquis GS....HO motor..Bilstein shocks poly bushings and police swaybars. This one handles the best.
                70 Torino Squire with M code 351 Cleveland 3.00 has Magnaflow mufflers. Hidden headlights and power windows. All original

                Comment

                Previous template Next
                Working...
                X