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    #1

    engine light???

    OK, the other day when I was cleaning up and painting under the hood on the '91... I took the EGR valve off to repaint it... it looked terrible... well as luck would habe it... the plastic vacume tube going to the egr broke... so when I started the car up, the check engine light came on... I figured no big deal, it is because of the egr being disconnected.. and the resulting vacume leak.... So I fixed the egr vacume... reset the engine light... and now the thing came right back on... and WILL NOT go off!!!! So yesterday at work, we pulled the codes... here is what it said...

    KOER
    Code 12 cannot control RPM during self test high RPM check

    Code 23 tps/ pedal position out of range
    during self test

    Code 94 secondary air system inoperative

    Code 44 thermactor AIR sys
    system inoperative

    Code 35 evp sensor above max voltage

    any ideas????

    Would losing vacume to these cause all of this??? Seems funny that it would come on after the vacume hose thing....
    And since i don't have a chiltons book on this car... where are these different items located so i can check and see if something maybe is unplugged???

    The car runs fine.... just the damn light is driving me nuts!!!! Tom!


    Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
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    Tags: None
    #2
    No ideas???? Anybody out there????


    Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
    Agent Tony DiNozzo… It only seems longer….

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      #3
      Did you goose the throttle when you were running the tests? It'll throw a tps code if you don't do that, but I can't remember exactly when you are supposed to press teh gas pedal
      Pebbles-1968 Ford F250
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        #4
        Its not the high idle throttle thing I am wondering about... it is the rest of the codes, and what needs to be done to at least get the light to go off.... And I was just wondering if it throws these code because of? and Why?????? Thought someone here MAY have an idea what is gojng on with the car.... and how to fix the problem.... Since I just started back to work after a month off.... I need to see if I can fix it myself without going to a shop... to save money!!! Tom!


        Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
        Agent Tony DiNozzo… It only seems longer….

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          #5
          Code 12 cannot control RPM during self test high RPM check -- sounds like a bad IAC

          Code 23 tps/ pedal position out of range
          during self test -- either bad TPS or ou didn't goose the throttle like it wanted. Stick a volt meter on the green (i think its green, maybe its the orange) to ground and check the voltage with the key on and engine off. It should be a little under 1v. Slowly open the throttle, and if the voltage increases smoothly your TPS is probably fine.

          Code 94 secondary air system inoperative. That should be the control system from the smog pump down to the catalytics. Related to
          Code 44 thermactor AIR sys
          system inoperative -- My car threw these when the smog pump was there, and still does it with the system removed. I wouldn't worry much about those. I also have no f'n clue how to make it go away either. Only suggestions are to check the vacuum lines in and out of the system and make sure that "connector" with the 3 hoses is sealing decently.

          Code 35 evp sensor above max voltage -- could be either the sensor on the back of the EGR valve is shot, the EGR valve is stuck, or the EVR filter is clogged. EVR filter is in the small film canister looking thing that should be attached to the side of the upper intake near the throttle body on a 91. If its not there, it'll be over on the passenger side fender probably. Pop the top off the canister, fish out the little piece of foam, and clean it out in a cup of water. Allow to dry and re-install. I'd also pull the EGR valve and clean any carbon off the pintle and out of the bore.
          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

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          Comment

            #6
            FINNALLY!!! We have a winner!!! Thanks for the advice!!! I'll have to check that out in the morning before I go to work... IF I get time! Thanks again!

            Tom!!!


            Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
            Agent Tony DiNozzo… It only seems longer….

            http://www.tomspolicecars.com/

            Comment

              #7
              Well, I found one problem with the car... the egr sensor has a pin that came out of the friggen unit... I unplugged it yesterday, and there was one of the pins sticking out of the plug... looked in the end of the sensor.. and sure enough... it came out of the friggen sensor.... and of course it has a years warranty... I replaced it like two years ago! Figures! Still checking out the rest.... I'm going to check my purchase history at work on the computer, and check the date.... maybe my manager can work something out... and warranty it out.... Tom....


              Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
              Agent Tony DiNozzo… It only seems longer….

              http://www.tomspolicecars.com/

              Comment

                #8
                Originally posted by trwp72
                Well, I found one problem with the car... the egr sensor has a pin that came out of the friggen unit... I unplugged it yesterday, and there was one of the pins sticking out of the plug... looked in the end of the sensor.. and sure enough... it came out of the friggen sensor.... and of course it has a years warranty... I replaced it like two years ago! Figures! Still checking out the rest.... I'm going to check my purchase history at work on the computer, and check the date.... maybe my manager can work something out... and warranty it out.... Tom....
                Joe is REAL good about warrenties. Especially if its one of ours
                1983 Grand Marquis 2Dr Sedan "Mercules"
                Tremec TKO conversion, hydraulic clutch, HURST equipped!

                Comment

                  #9
                  ***************UPDATE****************************

                  Today I bought a new TPS, and a new EGR switch, and installed them in the 91... No more engine light.... And the cars runs even better than before... the main thing is... it doesn't sit there and "Surge" at a stoplight, when the RPM's go up and down!!!!

                  The TPS went in with no problems... but I broke one of the damn studs that mounts the switch to the EGR..... I saw that it had rusted some, and was even just using the socket, not the wrench to tighten it down, so I wouldn't break the stud, and "snap"... it broke!!! So two bolts will have to hold it until I decide to change the EGR out... It probably needs a new one soon anyway... as it is the original one on there....

                  The main thing is now my gas milage will go back up, it has better drivability, and it doesn't spark knock when your just trying to idle along.... (I HATE that!!)

                  Oh, and my manager couldn't warranty out the parts... I bought them like THREE years ago.... damn time flies when your having fun....


                  Tom...


                  Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
                  Agent Tony DiNozzo… It only seems longer….

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                  Comment

                    #10
                    Glad to hear it's running right again. How is the carb'd 351 as opposed to an EFI panther. Any real difference in driving, powerband, egine feel, etc.?
                    Nick
                    88 Colony Park LS
                    G-pa's old car, but he's cruisin around heaven in his 69 wagon now
                    Future plans:Semi HO conversion, or Explorer motor swap, shift kit, PI springs and sway bars, KYB-GR2 shocks

                    Comment

                      #11
                      I have no idea... never drove one of the 351's... mine is the 302 EFI..... Sorry can't help you on that one!!!! Tom...


                      Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
                      Agent Tony DiNozzo… It only seems longer….

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                      Comment

                        #12
                        Ah, I thought that the carb'd cars had some sort of management computer on them too. I could be confused with something else, or maybe I'm jsut retarded.
                        Nick
                        88 Colony Park LS
                        G-pa's old car, but he's cruisin around heaven in his 69 wagon now
                        Future plans:Semi HO conversion, or Explorer motor swap, shift kit, PI springs and sway bars, KYB-GR2 shocks

                        Comment

                          #13
                          Actually, I think the 351's had the old spark control box on the inner fender... (Dura Spark?) but I may be wrong... only agencies here locally that bought them were the state... And I guess I never really noticed which spark control (computer) they had! Tom!!!


                          Agent Caitlin Todd… You know Tony, Statistics show that married men live longer…
                          Agent Tony DiNozzo… It only seems longer….

                          http://www.tomspolicecars.com/

                          Comment

                            #14
                            Originally posted by 88MercWagon
                            Ah, I thought that the carb'd cars had some sort of management computer on them too. I could be confused with something else, or maybe I'm jsut retarded.
                            The 7200 Variable Venturi Carb was computer controlled. My computer box melted and caused the choke to be closed all the time. I found another one in an '87 351W P72 and installed it in my '82. Works great now.

                            The computer box didn't do much, the car still runs (though quite rich) if the computer is disconnected. I've heard it takes input from the 02 sensor.

                            And the Duraspark is there too, just a separate box.


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                            Comment

                              #15
                              o0ohh, thanks for the info.
                              Nick
                              88 Colony Park LS
                              G-pa's old car, but he's cruisin around heaven in his 69 wagon now
                              Future plans:Semi HO conversion, or Explorer motor swap, shift kit, PI springs and sway bars, KYB-GR2 shocks

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