Announcement

Collapse
No announcement yet.

CFI High idle

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

    CFI High idle

    My Merc is staying on high idle since the weather turned cold.

    The high idle plunger (right name?) is out keeping the idle up. Disconnecting the vacuum does not help, so I assume vacuum pulls it back.

    Temp gauge shows the motor is 185.

    I did notice the hoses weren't pressurized the other day when I changed the antifreeze, but was a very cold day.

    No fluid leaks.

    Thoughts?
    Last edited by 85MercPark; 12-23-2009, 11:49 AM.
    2000 Grand Marquis LS
    2000 F150 XLT 6 inches of lift.
    1987 Bill Blass Mark VII - Sold
    1985 Mercury Grand Marquis Colony Park- SOLD. to a little old lady
    Mercury Owners Group member
    Save The Whales, Restore an Old Station Wagon!!
    Tags: None
    #2
    it stays like this for longer than 5-10 minutes? I know with mine sometimes it can take as long as 5-7 minutes at high idle before it kicks down. Had me worried at first... I did not have a temp gauge though.
    -Phil

    sigpic

    +1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.

    +2003 Acura CL Type S 6-speed

    Comment

      #3
      Yep, after my 10 minute commute it was still high. In the am start, it goes high idle then in 10-15 seconds drops down. Later on the way to work it's back up.
      2000 Grand Marquis LS
      2000 F150 XLT 6 inches of lift.
      1987 Bill Blass Mark VII - Sold
      1985 Mercury Grand Marquis Colony Park- SOLD. to a little old lady
      Mercury Owners Group member
      Save The Whales, Restore an Old Station Wagon!!

      Comment

        #4
        it is really cold today........choke might need adjustment?.....try puttin the car in the garage overnight and see how it acts tommorow

        1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
        2006 Lincoln Town Car Signature. Stock for now
        1989 Ford F-250 4x4 much much more to come, sefi converted so far.
        1986 Toyota pickup with LSC wheels and 225/60/16 tires.
        2008 Hyundai Elantra future Revcon toad
        1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

        please be patient, rebuilding an empire!

        Comment

          #5
          Does the choke have an effect on that high speed plinger?
          2000 Grand Marquis LS
          2000 F150 XLT 6 inches of lift.
          1987 Bill Blass Mark VII - Sold
          1985 Mercury Grand Marquis Colony Park- SOLD. to a little old lady
          Mercury Owners Group member
          Save The Whales, Restore an Old Station Wagon!!

          Comment

            #6
            i think the electric plunger giggity is controlled by the ECM only, unless you've hot-wired the solenoid for manual control. There is a mechanical high idle stop that the "choke" works though. Wonder if maybe the ECT isn't going wonky and the computer thinks its never warming up.
            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

              #7
              like gadget said check the ect first. maybe spray some carb cleaner and clean up the throttle blade maybe there is some build up there.
              1996 Mercury Grand Marquis - duals, PI cams, PI intake, J-Mod, MZT, BOC tune, 3.55s, 18in wheels
              1965 Ford Falcon Ranchero - 5.0 HO T5 Fun Cruiser
              http://www.supermotors.net/users/tmm313

              Comment

                #8
                maybe just plain old vacuum leak?
                Originally posted by gadget73
                There is nothing more permanent than a temporary fix.
                91 Mercury CP, Lopo 302, AOD, 3.08LSD. 3g upgrade, Moog wagon coils up front, cc819s in the back. KYB GR-2 police shocks. Energy suspension control arm bushings. Smog deleted.
                93 F-150 XLT, 302, ZF 5-spd from 1-ton, 4wd.
                Daily--07 Civic Coupe. Bone stock with 25k miles
                Wife--14 Subaru Outback. 6-speed.
                95 Subaru Legacy Wagon--red--STOLEN 1/6/13

                Comment

                  #9
                  Sorry guys, i was away on vacation.

                  ECT?

                  The choke seems to work fine, wide open, but fast idle.
                  2000 Grand Marquis LS
                  2000 F150 XLT 6 inches of lift.
                  1987 Bill Blass Mark VII - Sold
                  1985 Mercury Grand Marquis Colony Park- SOLD. to a little old lady
                  Mercury Owners Group member
                  Save The Whales, Restore an Old Station Wagon!!

                  Comment

                    #10
                    ect = engine coolant temperature sensor. Its the thing in the nipple where the heater hose connects. Usually it will throw a code if its faulty, but not always. Easy enough to check with a voltmeter if you have one handy. http://fordfuelinjection.com/index.php?p=28

                    Having a temperature gauge is handy, but if you don't have one, just verify it provides some sane value. If the motor is warmed up, you ought to get something in the 180-220 degrees range. If its way outside of there, the sensor is probably done.
                    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

                      #11
                      I have this slimier problem, start her up, she idles high for a bit, dips back down to normal, ill drive and sometimes the idle kicks back up and I can't understand why, this only happens once in awhile so I have not hunted for a cure...
                      But when the idle does kick back up after she is warmed up I surely notice it, it will kick into gears, from drive to reverse all i will feel is a hard jerk.. It's a little scary. With or without the high idle the transmission shifts roughly out of 4th and from 1st to 2nd
                      -Matt
                      Last edited by Djonemore; 01-04-2010, 09:41 PM.
                      1990 Lincoln Town Car 5.0 @ 125K /// 2007 Hyundai Sonata 3.3 @ 29K

                      Comment

                        #12
                        Originally posted by Djonemore View Post
                        I have this slimier problem, start her up, she idles high for a bit, dips back down to normal, ill drive and sometimes the idle kicks back up and I can't understand why, this only happens once in awhile so I have not hunted for a cure...
                        But when the idle does kick back up after she is warmed up I surely notice it, it will kick into gears, from drive to reverse all i will feel is a hard jerk.. It's a little scary. With or without the high idle the transmission shifts roughly out of 4th and from 1st to 2nd
                        -Matt
                        IAC might be sticking, and how's that TV bushing for the AOD?

                        Comment

                          #13
                          Originally posted by gadget73 View Post
                          ect = engine coolant temperature sensor. Its the thing in the nipple where the heater hose connects. Usually it will throw a code if its faulty, but not always. Easy enough to check with a voltmeter if you have one handy. http://fordfuelinjection.com/index.php?p=28

                          Having a temperature gauge is handy, but if you don't have one, just verify it provides some sane value. If the motor is warmed up, you ought to get something in the 180-220 degrees range. If its way outside of there, the sensor is probably done.
                          I'll give that a look.

                          It's been good lately of course.
                          2000 Grand Marquis LS
                          2000 F150 XLT 6 inches of lift.
                          1987 Bill Blass Mark VII - Sold
                          1985 Mercury Grand Marquis Colony Park- SOLD. to a little old lady
                          Mercury Owners Group member
                          Save The Whales, Restore an Old Station Wagon!!

                          Comment

                            #14
                            Originally posted by 86VickyLX View Post
                            IAC might be sticking, and how's that TV bushing for the AOD?
                            Hey man thanks for the info, if it's sticking, would it need replacement or can I take it off and clean the channels and all?
                            1990 Lincoln Town Car 5.0 @ 125K /// 2007 Hyundai Sonata 3.3 @ 29K

                            Comment

                              #15
                              sometimes you can get away with cleaning it up. give it a try and if it doesnt work i would suggest installing a new one.
                              1996 Mercury Grand Marquis - duals, PI cams, PI intake, J-Mod, MZT, BOC tune, 3.55s, 18in wheels
                              1965 Ford Falcon Ranchero - 5.0 HO T5 Fun Cruiser
                              http://www.supermotors.net/users/tmm313

                              Comment

                              Previous template Next
                              Working...
                              X