Will not run with MAP sensor
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by FordPerf300
they are a tan off white color, defn. not yellow top, fuel pressure is fine. So ill take a shot at this, the ecu being from a mustang is giving the engine fuel as if they were 19lb injectors?
Last edited by subford; Dec 24, 2007 at 01:35 PM.
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Posting Guru
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From: CT
i don't have any 19lb injectors, would finding an ECU to work be more of an issue than getting 19lb injectors? is there any way to decode what ecu i would need? I know it needs to be SEFI and for 14lb injectors, does such a beast exist?
edit: are 19lb injectors stock on the 5.8L?
i'm getting the run around on the ecu's i need a part number or they won't even try to find one.
edit: are 19lb injectors stock on the 5.8L?
i'm getting the run around on the ecu's i need a part number or they won't even try to find one.
Last edited by FordPerf300; Dec 27, 2007 at 08:45 AM.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by FordPerf300
i don't have any 19lb injectors, would finding an ECU to work be more of an issue than getting 19lb injectors? is there any way to decode what ecu i would need? I know it needs to be SEFI and for 14lb injectors, does such a beast exist?
Lead Driver
Joined: Nov 2002
Posts: 9,557
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From: Concord, NC
19 lb/hr are stock on the truck 5.8, yes. The 4.9L pressure regulator would put the fuel pressure up to around 55 or 60, so that may be an easier work-around than trying to find a different ecu.
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From: CT
what year FPR from a 4.9L the 93 one i have is completely diff bolt pattern. I can re work it to make it work but is there a bolt up version? i'll try using my adjustable regulator first with a pressure gage before i start hacking up the 4.9 regulator.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by FordPerf300
what year FPR from a 4.9L the 93 one i have is completely diff bolt pattern. I can re work it to make it work but is there a bolt up version? i'll try using my adjustable regulator first with a pressure gage before i start hacking up the 4.9 regulator.
I did know they had a different bolt pattern.
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From: CT
Welp, installed the adjustable FPR and the fuel pressure gage, cycled the key a few times, the pressure seemed to hit a max of 30 psi and rapidly dropped to 0. I think I found the problem, injectors are leaking down and not holding pressure.
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From: CT
besides the injectors, i'm having a hard time figuring out what the fuel injection firing order is in the ecu, i know that the engine is a standard 302 (non HO) is there a way to see if the ecu i have is HO or not?
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