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#344966 - 01/14/04 03:14 AM Grand Marquis running rich...
BoxMan Offline
Grand Poobah

Registered: 01/21/02
Posts: 11514
Loc: Millville, PA
I'm really getting fed up with this b!tch. It's back to running rich again. There's no black smoke, but gas mileage is awful and it just plain stinks of gas.

I've done a tune up, replaced the map sensor, replaced the choke stat and pulloff, fuel filter, and even had the fuel pressure lowered because it was sky high. It has a newer TPS too, I think.

I saw in another post that someone replaced the fuel pressure regulator. Could this be the problem with mine?

HELP!!

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#344967 - 01/14/04 03:17 AM Re: Grand Marquis running rich...
FordMan77 Offline
Over the Hill

Registered: 09/18/02
Posts: 1784
Loc: St. Louis
Sounds like it. Would any of this throw a code in the ECM? Maybe an O2 sensor richening it up too much?
_________________________
People say I'm f***'d up- I say I'm mentally endangered.

Jay

1984 CV Police Package- being torn down for resto
2003 CV Sport


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#344968 - 01/14/04 03:33 AM Re: Grand Marquis running rich...
BoxMan Offline
Grand Poobah

Registered: 01/21/02
Posts: 11514
Loc: Millville, PA
I knew I was forgetting something. I replaced the O2 sensor as well.

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#344969 - 01/14/04 06:54 AM Re: Grand Marquis running rich...
1987LTDmasta Offline


Grand Poobah

Registered: 01/05/01
Posts: 11463
Loc: Chicago, IL.
i vote on a gas leak... how does it run?

check out the plugs first.. then check back with me later.
_________________________
she gone.

1987 Ford LTD Crown Victoria LX (1999-2011)
5.0 liter EFI High Output
Police Package suspension
Current:
'67 Mustang coupe

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#344970 - 01/14/04 09:59 AM Re: Grand Marquis running rich...
Petely Offline
Poobah

Registered: 06/26/03
Posts: 5164
Loc: Chicago, IL
The fuel line running along the frame likes to rust out under the front and rear door on the drivers and develop pinholes that usually leave the area quite wet. Rubbing your hand along the area while feeling for wetness and smelling it will tell for sure. I am considering running high pressure fuel hose from the fuel filter onward and zip tying it to the brake lines.
_________________________
Peter
1987 Mercury Grand Marquis
*sold to some guy on cvn for $1
New Long List of Rules Compliant Sig

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#344971 - 01/14/04 12:38 PM Re: Grand Marquis running rich...
Denzien Offline
What's this for?
Poobah

Registered: 11/30/02
Posts: 6834
Loc: Round Rock, TX
How bad is your gas mileage?

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#344972 - 01/14/04 02:45 PM Re: Grand Marquis running rich...
moneypit Offline
Over the Hill

Registered: 08/06/03
Posts: 2610
no, the fuel pressure regulator didn't trow ANY codes. which was why i replaced everything BUT it to begin with and found that even though there were no codes, it still ran like crap and you could watch the gas guage go down.
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#344973 - 01/14/04 03:15 PM Re: Grand Marquis running rich...
BoxMan Offline
Grand Poobah

Registered: 01/21/02
Posts: 11514
Loc: Millville, PA
How bad is it? Well, it used 27 bucks in THREE days, driving to and from the next town once a day, 20 min away. Did some other driving too, but just around town and not much of it.

Last night it used almost a quarter tank just starting it and driving maybe 5 miles. I really doubt I have a leak. There's never any wet spots where it sits. Also, it seems to me it uses more gas driving SLOWER, than if I drive a little more agressive.

It's also got this other problem. When you go WOT it bogs down and does NOTHING. No revving, no movement, nothing. Then it catches or whatever and hang on! It takes off fast.

On a better note, I drove my Vic a very short distance today. Parked it in the garage of my new place. Oh how I miss that rumble of the exaust. 217k and it just purrs like a kitten when shes warmed up.

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#344974 - 01/14/04 03:17 PM Re: Grand Marquis running rich...
Grrr Offline
Member

Registered: 02/06/03
Posts: 179
I've had the same crappy mileage on my '83 cv.
Have you checked the TPS?
I checked mine last night, and it was at 1.6, which is way off.
_________________________
1983 Ford LTD Crown Victoria 5.0L 302 V8
Proudly named The Grunge Master 2000.
Nick named The Beast
Yes, I named my car.
Big deal.
4/??/83 to 4/28/04
R.I.P.
Alas, the Grunge Master 2000 is no more.


No longer completely stock!! New Dual exhaust!

1997 Dodge Neon ACR 5 speed.
AutoCross car
NOT COMPLETELY STOCK

1995 Suzuki GS500E.
Duly named The Purple People Eater.
Currently sitting on my porch awaiting new battery.

1992 Mercury Grand Marquis GS
It's big, it's white, and it has power
Now named "The New and Improved Ghetto Battle Cruiser".

Piece of crap.
Now, the piece of crap has been rear ended by some run-away moron.
It has been totalled.
I hate that SOB!!!

Now sporting a 1989 F-150 XLT Lariat with a 5.0 302, and a 4 speed manual. Extra long wheel base.
Project truck.

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#344975 - 01/14/04 03:27 PM Re: Grand Marquis running rich...
PhAyZeR5 Offline
Over the Hill

Registered: 05/28/03
Posts: 3901
Loc: Dunnellon, FL
Quote:

It's also got this other problem. When you go WOT it bogs down and does NOTHING. No revving, no movement, nothing. Then it catches or whatever and hang on! It takes off fast.




Now someone knows exactly what was going on with my car a few months ago

I pulled the plugs after it ran like his for a little bit, and they were solid black with carbon. Does it idle really funny, sorta like it has a big cam but doesnt? Thats what mine did. I figured out that when i turn the car off and try to restart it within a few minutes, it liked to run like crap and do that WOT thing you mentioned. If li let it sit for a little while before restarts, it doesnt do it. I can stop at a gas station, run in and get a subway sand., pay for it and get back in the car and take off normally. Ever since it started doing this, i leave the car running at the gas pump and other short little stops.

It hasnt done it in awhile, and I havent replaced one sensor since it did that. I'm just careful of when and how long i shut it off for so I dont have to deal with it. I still drive it to Orlando and back, I don't really drive it any differently.
_________________________
My lugnuts take more torque than your Honda puts out

408w powered Cobra Linc

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#344976 - 01/14/04 03:51 PM Re: Grand Marquis running rich...
Grrr Offline
Member

Registered: 02/06/03
Posts: 179

Quote:


It's also got this other problem. When you go WOT it bogs down and does NOTHING. No revving, no movement, nothing. Then it catches or whatever and hang on! It takes off fast.





I,too, have this problem.
_________________________
1983 Ford LTD Crown Victoria 5.0L 302 V8
Proudly named The Grunge Master 2000.
Nick named The Beast
Yes, I named my car.
Big deal.
4/??/83 to 4/28/04
R.I.P.
Alas, the Grunge Master 2000 is no more.


No longer completely stock!! New Dual exhaust!

1997 Dodge Neon ACR 5 speed.
AutoCross car
NOT COMPLETELY STOCK

1995 Suzuki GS500E.
Duly named The Purple People Eater.
Currently sitting on my porch awaiting new battery.

1992 Mercury Grand Marquis GS
It's big, it's white, and it has power
Now named "The New and Improved Ghetto Battle Cruiser".

Piece of crap.
Now, the piece of crap has been rear ended by some run-away moron.
It has been totalled.
I hate that SOB!!!

Now sporting a 1989 F-150 XLT Lariat with a 5.0 302, and a 4 speed manual. Extra long wheel base.
Project truck.

Top
#344977 - 01/14/04 04:07 PM Re: Grand Marquis running rich...
BoxMan Offline
Grand Poobah

Registered: 01/21/02
Posts: 11514
Loc: Millville, PA
Yea, it idles like that sometimes. I thought the exact same thing too. "This thing idles like its got a big cam!" lol

"Piece of sh!t car, I've got a piece of sh!t car. Ohh what the f*ck did I do what the f*ck did I do, you're too wide for drive thru and you smell like de shoe.." Love that song...

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#344978 - 01/14/04 04:21 PM Re: Grand Marquis running rich...
moneypit Offline
Over the Hill

Registered: 08/06/03
Posts: 2610
now that really sounds like the fuel pressure regulator. mine would surge up and down at idle between 500 and 1500 rpms, the gas would disappear driving through town but not so much on the highway, and man i reaked of gas!
also started really hard. only difference was mine didn't have the dead WOT thing.
_________________________
Shameless plug:

www.ventureonline.org
Give us money!!!



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#344979 - 01/14/04 04:28 PM Re: Grand Marquis running rich...
BoxMan Offline
Grand Poobah

Registered: 01/21/02
Posts: 11514
Loc: Millville, PA
Yea, I've heard the idle surge a couple different times too. Mine doesn't start hard, especially when it's warm.

My plugs say it's lean. So I'm gonna search for a leak like Epi tells me, if I can't find one I'm guessing it's the FPR. And then, then...if it's not that...DERBY TIME in September!! Muahahahaha

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#344980 - 01/14/04 04:32 PM Re: Grand Marquis running rich...
moneypit Offline
Over the Hill

Registered: 08/06/03
Posts: 2610
_________________________
Shameless plug:

www.ventureonline.org
Give us money!!!



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