2001 Grand Marquis won't stay running on start-up
It seems that, especially on humid mornings or after a big rain storm, Kim's '01 GM just won't stay running after initial start-up. After about 10 minutes, it runs and then it's fine for the rest of the day. Is there moisture getting in someplace that I can't find? Is the C O P system flawed? Is there moisture getting under the plug boots? Once the car stays started it runs flawlessly. Any ideas will be appreciated. Thanks!
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Does the car stumble and die, or does it just start and shut off? Have you had the car scanned for codes? Sometimes the computer will pick up in intermentent problem that doesn't like the CEL.
RayCar: 2004 Mercury Marauder
Engine/Tranny: 49k miles and bone stock....for now
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That'll be the next step to pull codes, I guess. The car will run at initial startup but then die when she puts it in gear. There is no CEL at all that comes on. <shrug>
Originally posted by 93 MarquisComment
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Could be moisture in the plug holes, causing misfires.....Does it run ok, if you keep you foot on the pedal? if so the IAC may be sticking.Comment
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It could maybe be Oxygen Sensors as well. When i had my new O2's put in everytime after a car wash the car would idle funny for a few minutes until I guess they dried out. But now it doesn't happen anymore, maybe the entrance for the moisture sealed itself...
1999 Ford Crown Victoria LX 1/4 mile - 15.8 sec. @ 87 mph
-Marauder Intake and 80mm MAF, XCal 93 Octane Tune (BOC) with Motorcraft 22F Copper Plugs, Hi Flow Cats, Glasspacks with Short Exits Rear of the Tires, FRPP 70mm TB, Addco Sway Bars Front and Rear, PI ShocksComment
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I'm with Johnny, check your IAC.2000 Mustang GT "Blondie", 2000 CVPI "Sargent Crusty"Comment
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Hi, Johnny ... the car runs superb once she get's it going. Really, I don't use the word flawlessly unless I mean it. The car runs flawlessly the restt of the day once she get's it going. I'll check the plugs and plug holes. I've never changed plugs on a C O P 4.6L (my '92 TC still has the regular coilpacks and plug wires) so I'll just take my time. Thanks for the reply!
Originally posted by JohnnyirocComment
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IAC valve.:worship: Aeros r00l.
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The bad think about this is.....there are a bunch of things that can cause this
moisture in a coil, plug boot with moisture in there, IAC, o2 sensors not working until hot, water getting into engine components, almost a must see, but we will try over the net.Comment
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Well, it's got the COP setup so I'm just going to check the plugs to make sure they aren't loose and that all connections are tight. Since my accident last week (Mark VII was totalled) I haven't had time to even think about her car.
I was too busy with other things prior to the accident to look at it too. I do appreciate your suggestions and patience. I'll update as soon as I'm able.
Originally posted by JohnnyirocComment
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Hi Jack
An off the wall suggestion, has Kim's car got PATS (Passive Anti-theft System) fitted? If so could be a bad key or sensor ring, we have had some wierd sh*t at the shop on various cars when the PATS goes wrong.
If you have a spare key give it a try when the car is acting up, at least it would be one thing to remove from the list.
Regards
DereckPresident and founder of The Turbine Wheel Appreciation Society and Little Debbie Cake Connoissuer
Also "The Pondside Pain In Your Posterior"Comment
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If you pull those COP dealies off, make sure you put some new di-electric grease in them before popping them back on. It will keep the moisture sealed out of them. Not sure if its the problem but just a mention.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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excellent ideaComment
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Hi Dereck ... we tried all the keys and the same thing happened. Once I feel better I'll change out the plugs and re-grease the boots like Gadget suggested.
Originally posted by DereckComment
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