Hey I was working on a friend of mines 1989 crown vic and there is an engine light that is red in the lefthand corner and it comes on whenever you turn the AC on. At stoplights the car would die out if the AC was on. So I cranked up the idle as it was very low and that fixed the dying problem, but the light still comes on and flickers whenever the rpms get low. What sensor(s) turn on this dummy light?
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1989 Lincoln Town Car - "Anabelle" - Original block, .030 over with SpeedPro pistons, rods fitted with ARP hardware, FRPP +volume oil pump, GT-40 3bar heads, Crane 1.72 rockers, 89' Fox cam, 93' Cobra lower intake, Explorer upper and 65mm TB, 93' Lightning EGR spacer, K&N intake kit from a 4.0L Ranger, 19lb/hr injectors w/ 87 Mark VII ECM, cat/smog deletes, Big Brake conversion, 3.55 K-Code Trac-Lok/Disc brake rear axle, CVPI LCA's w/1" sway bar in rear, wagon front sway bar, BBK 2.5" off-road H-Pipe, Flowmaster super 40s, HPP wheels, 3G alternator w/LMR.com wiring kit, gear reduction starter conversion, Best 1/4 time: 16.0 @ 85mph. -
Red engine light=low oil pressure or overheating. Comes on at 6psi oil pressure, or at 250 degrees F water temp (I think).
Yellow "check engine" light is for EEC codes.
If the red engine light is flickering when the revs get low, it means that oil pressure is just kissing 6psi at idle, probably because the main bearings are trashed. Start running 20W-50 and drive it nice, it'll probably last awhile yet.
Also, how did you crank up the idle? Is it a 351 with a VV? If not, the computer should be controlling the idle, rather than the throttle stop screw. Make sure the IAC isn't fucked.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.Originally posted by gadget73
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 -
you adjusted the base idle?? every 5.0 car i've ever owned has ran with the throttle stop screw all the way out.. the idle is technically non adjustable and controlled by the IAC/tps. If the iac is functioning properly, and your plate isn't sticking closed, the screw should not be touched.
a quick way to set this would be to turn the throttle stop screw all the way out and unplug the iac, try and start the car and if it doesnt run, turn the screw another tick and try again.. repeat this until the engine just barely runs on its own and then reconnect the iac.Last edited by cld783; 06-17-2009, 08:08 PM.Give a man a fish and he will be fed for a day. Teach a man to fish and he will promptly forget that he once did not know, and proceed to call anyone who asks, a n00b and flame them on the boards for being stupid.Comment
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Low idle makes for low oil pressure. If the idle was low, the IAC is probably dead. There is no idle adjustment, its computer controlled.
If the idle is in spec and the light is blinking, try thicker oil. If that doesn't fix it, ignore it because there is nothing you can do at this point. It means the main bearings are worn out, and its going to have chronically low oil pressure. Its good for about another 100k if it doesn't have the living crap beat out of it.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 rousersComment
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Hmm that's interesting you all say the idle isn't adjustable, because it idled up as I turned the screw in and I've always adjusted my Anabelle that way also, this is new to me. I was under the impression old 5.0's just had that idle screw there for adjustment. You learn something new everyday heh.
As far as the oil psi goes, its definitely not overheating. It does have a piston slap noise 75% of the time while driving that could be a bearing instead. I'll tell him to get 20W-50.Last edited by 89LincolnTWNcar; 06-17-2009, 11:36 PM.1989 Lincoln Town Car - "Anabelle" - Original block, .030 over with SpeedPro pistons, rods fitted with ARP hardware, FRPP +volume oil pump, GT-40 3bar heads, Crane 1.72 rockers, 89' Fox cam, 93' Cobra lower intake, Explorer upper and 65mm TB, 93' Lightning EGR spacer, K&N intake kit from a 4.0L Ranger, 19lb/hr injectors w/ 87 Mark VII ECM, cat/smog deletes, Big Brake conversion, 3.55 K-Code Trac-Lok/Disc brake rear axle, CVPI LCA's w/1" sway bar in rear, wagon front sway bar, BBK 2.5" off-road H-Pipe, Flowmaster super 40s, HPP wheels, 3G alternator w/LMR.com wiring kit, gear reduction starter conversion, Best 1/4 time: 16.0 @ 85mph.Comment
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Oh it idles up if you cran the screw, but thats not what its for. You're not supposed to adjust the idle. That screw is a throttle stop screw, idle is electronically controlled by the ECM. Target idle is like 670 rpm if I remember right.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 rousersComment
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hmmmmm might be why anabelle is surging at startup and dying.........durrr hurrr. And here I thought I was all Pather expert
1989 Lincoln Town Car - "Anabelle" - Original block, .030 over with SpeedPro pistons, rods fitted with ARP hardware, FRPP +volume oil pump, GT-40 3bar heads, Crane 1.72 rockers, 89' Fox cam, 93' Cobra lower intake, Explorer upper and 65mm TB, 93' Lightning EGR spacer, K&N intake kit from a 4.0L Ranger, 19lb/hr injectors w/ 87 Mark VII ECM, cat/smog deletes, Big Brake conversion, 3.55 K-Code Trac-Lok/Disc brake rear axle, CVPI LCA's w/1" sway bar in rear, wagon front sway bar, BBK 2.5" off-road H-Pipe, Flowmaster super 40s, HPP wheels, 3G alternator w/LMR.com wiring kit, gear reduction starter conversion, Best 1/4 time: 16.0 @ 85mph.Comment
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Theres a base idle reset procedure if you want to put it back to how it ought to be.
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 rousersComment
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got to see this car in person today.
the Motor knocks horribly.
Ran some Gunk 5 min engine flush through it, then changed the oil and filter, re-filled with 15W40 and bottle of STP oil treatment.
motor is quieter now, but still has a noticable knock.2003 Town Car Signature - 3.27 RAR, Dual exhaust and J-mod - SOLD 9/2011
89 Crown Victoria LX HPP -- SOLD 9/2010
88 Grand Marquis LS - The Original -- Totaled 5/2006
I rebuild AOD/AODE/4R70W/4R75E transmissions....Check out my Facebook page: https://www.facebook.com/pages/North...48414635312478Comment
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