I just spent money on a fuel pump and strainer with the labor of dropping the tank to find out that the tank was like brand new as was the fuel pump. After a lot of time and money spent, I finally ran a test on the car (86 Grand Marquis) and got the codes 11 (koeo) and 12,21,41,91 (koer). I see that one is for the ECT which I'll just change, but does it look like the other 3 codes point to the fuel pressure regulator? It almost had the symptoms of a weak fuel pump, like slowing itself down while driving but it starts instantly all the time and never dies out at idle. It has been using a lot of gas too.
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"It is the soldier, who salutes the flag, who serves under the flag, and whose coffin is draped by the flag, who allows the protester to burn the flag."
-Father Dennis O'Brien, USMC -
it might be the regulator if you gots codes and it starts fine. the engine wont have a demand for fuel, only when you get on the throttle that the engine needs the fuel demand and a faulty regulator will hold back that demand which means drive ability issues. ever put a fuel pressure gauge on it?
1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
1987 Lincoln Mark VII 5-speed (Errand runner)
1989 Mercury Grand Marquis (Base Runner)
2007 Lincoln Town Car Signature Limited (Hustlyn)
2011 Ford Crown Victoria Police Interceptor (Down with O.P.P) -
I never put a pressure gauge on it. The guy that works on it just poked the pressure valve with a knife and threw his head out of the way. The fuel came spraying out very quickly. That's the first thing that made him think it wasn't the fuel pump, but I was never able to test the pressure under a load. One of the codes said it can't hold steady RPM's under heavy throttle or something to that effect and the others said it ran lean on both sides."It is the soldier, who salutes the flag, who serves under the flag, and whose coffin is draped by the flag, who allows the protester to burn the flag."
-Father Dennis O'Brien, USMCComment
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you could also have a blown injector or more. I especially think that might be the case since it's gulping gas more than usual. sounds like it's flooding out. Could also be the metering valve if it's just letting the fuel run through unchecked. The trouble codes point out that the oxygen sensors are reading lean. If you did this with the engine warmed up already, this would indicate that you may have sensor issues, but since you have code 21, either the coolant temp sensor is bad, the wires from it are bad, the connectors are corroded, or the engine wasn't warm, let us know if it was warmed up when you took those codes. If it's warm already and still has those codes, you may have more issues than you think.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
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The car was warmed up for 2 minutes, that's what the scanner said to do. We did this test on 2 different occasions to make sure they had the same results. I forgot to mention that while I was messing around with the car trying to get it to run better, probably a month ago, I unhooked the vacuum line from the regulator and drove it about 5 miles, it didn't slow itself down once."It is the soldier, who salutes the flag, who serves under the flag, and whose coffin is draped by the flag, who allows the protester to burn the flag."
-Father Dennis O'Brien, USMCComment
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in that case, it may be the vacuum switch going to the regulator. It may be allowing full vacuum all the time (if I understand the system right). Your regulator may be fine, but the controlling vacuum may be "hosed" so to speak.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
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There is vacuum going to the regulator but I don't know how much is too much or too little. I might just try a new regulator and go from there."It is the soldier, who salutes the flag, who serves under the flag, and whose coffin is draped by the flag, who allows the protester to burn the flag."
-Father Dennis O'Brien, USMCComment
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if there's nothing on the line between the regulator and the manifold or vacuum tree, then it's probably the spring in the regulator. I don't remember the vacuum setup on that one so I can't say for sure. Does sound like the part to swap though.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
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The vacuum line on the regulator has manifold vacuum. When the engine has low vacuum, so should the fuel pressure regulator. Pressure should be higher without vacuum. Oh and the knife opening the schrader valve on the fuel rail? Not a valid test. Throw a gauge on there and let us know what you find.Comment
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did you replace the fuel filter?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
Everything looks like voodoo if you don't understand how it worksComment
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ya, the filter can give you crazy issues too
1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
1987 Lincoln Mark VII 5-speed (Errand runner)
1989 Mercury Grand Marquis (Base Runner)
2007 Lincoln Town Car Signature Limited (Hustlyn)
2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)Comment
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