I was thinking about this thread earlier today. I find it odd that my wagon has a very similar setup and these exact same issues.
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gt40 motor and mark VII ecu problems
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2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP
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I gave up trying to poke and prod at the SD setup and installed mass air. Car runs perfectly now. Take that for whatever its worth to you.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
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well, when I removed it the problems went away so for me it was the problem. It ran lean because the motor was moving more air than SD was tuned to deal with. I have maybe $100 in the mass air parts, and a tweecer was gonna be $350 or so. The wallet dictated a mass air swap and the results are favorable. I realize that its not the solution to all problems, but it was my solution to my problem. Take that for whatever its worth to you.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
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thing i like about SD is the throttle response... hammer the gas it goes. MAF - hammer the gas and a half second later after air flow gets going... it goes. SD is just a little more responsive (probably due to less calculations being done by the computer - look up tables and all).
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 dmccaigOverhead, some poor bastards are flying in airplanes.
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Originally posted by Grand_Marquis_GT View PostGee, this sounds like the same problem i'm having, minus the running rich part!!
Originally posted by gadget73 View PostIt ran lean because the motor was moving more air than SD was tuned to deal with.Last edited by Guest; 05-04-2010, 12:33 PM.
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Mine made 202 at the rear wheels with an A/F ratio anywhere from 15:1 to 18:1, well into the "your motor is fuxxed lolz" range. I dont know why it was so awful. I've seen other cars with similar mods and in some cases many more mods run just fine with dyno sheets to verify the fuel mix, but mine just didn't want to play that game. I never use my car as an example because nothing ever reacts as expected with it. I've given up attempting to explain why things are the way they are. I ought to hire an exorcist, perhaps it will act more normally then.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
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I just found it odd that these cars all have similar mods and components, and all have the same problems.
Personally, it's not really bad enough for me to care. I do wonder though if going mass air would fix it.2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP
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Originally posted by slymer View Postthing i like about SD is the throttle response... hammer the gas it goes. MAF - hammer the gas and a half second later after air flow gets going... it goes. SD is just a little more responsive (probably due to less calculations being done by the computer - look up tables and all).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.
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Originally posted by cld783 View PostI think its the other way around.. maf is on the fly and speed density has to do calculations.
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 dmccaigOverhead, some poor bastards are flying in airplanes.
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Originally posted by jayh View PostI was making right around 300rwhp with sd n/a :headbang:
I have worked a lot with the lopo S/D engines, however, and the stock computers worked just fine with the HO swaps I've done to my own cars, or at least it seemed that way to me, anyway.
So far as my S/D comments go, it's directed towards the MK7 S/D setup, not the Mustang unit (if that is what you were referring to), of which I have seen some sterling exceptions to the 'you can't work with S/D!' mantra echoed earlier in this post (I'm vaguely recalling one early 1990's drag racer who got into the high 11's with S/D in a 1988 Coupe, and I think he was using a modded F150 302 intake). Concerning the MK7 ECM, I don't know of but maybe one or two here who have gotten the MK7 computer to work properly here....the rest all have problems.Last edited by Guest; 05-06-2010, 01:05 PM.
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Ok, let me throw my problem into the mix.
1991 CV. now has a stock 96 Explorer engine installed using the CV electronics and running terrible. Surging at idle, very bad MPG and running rich. I've been told I have to convert to mass air or else. And I've heard the original speed density will work just fine, but how? Is there a computer that will work for this swap? The original 5.0 was running just fine when taken out of the CV, so I don't think it's a bad sensor somewhere.
Any advice?
Thanks,
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You do know that the explorers have a different cam, injectors and firing order that REQUIRE you to install a HO 5.o computer from a HO mustang or Mark VII.~David~
My 1987 Crown Victoria Coupe: The Brown Blob
My 2004 Mercedes Benz E320:The Benz
Originally posted by ootdega
My life is a long series of "nevermind" and "I guess not."
Originally posted by DerekTheGreat
But, that's just coming from me, this site's biggest pessimist. Best of luck
Originally posted by gadget73
my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.
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