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#31
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Re: NO CEL w/ key on and no spark?
SBF 2 has no power with connection 4 unplugged.
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1991 SVX L JDM |
#32
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Re: NO CEL w/ key on and no spark?
Did you ever do anything with any of the wiring around the fuel pump relay? That tends to be a problem area, right? Maybe fixing something there created a short?
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#33
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Re: NO CEL w/ key on and no spark?
I'm going to guess the answer is no, because there isn't a closed circuit to cause the SBF2 to blow (?). Wondering if the relay is bad, shorting to ground?
-Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#34
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Progress?
Unplugged the fuel pump resistor in the package tray area and I now have a CEL and the car fires once on startup. Fuse does not blow. Going to take a look at the diagram and see the order of components in order to isolate.
YT suggests that the fuel pump is overdrawing the circuit and creating a short. Now trying to figure out how to narrow it down.
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1991 SVX L JDM |
#35
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Re: NO CEL w/ key on and no spark?
You could unplug the modulator and the resistor, and just ground the yellow, pump's ground wire, to get going.
Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#36
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Re: NO CEL w/ key on and no spark?
Quote:
Going back to the wiring diagrams.
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www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link |
#37
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Re: NO CEL w/ key on and no spark?
I iust got stranded less than ten minutes ago and am unable to illuminAte my CEL. Have not been able to look any further, other than my fuse for eng is fine...
Id be willing to bet I have no spark either.
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
#38
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Re: NO CEL w/ key on and no spark?
Mike, where is the fuel pump resistor located? I assume right off the pump itself, correct?
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
#39
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Re: NO CEL w/ key on and no spark?
Quote:
The resistor is on the bottom of the package shelf and can be accessed by pulling off the trunk "ceiling"trim. It is a gray connector with two wires.
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1991 SVX L JDM |
#40
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Re: NO CEL w/ key on and no spark?
Any more progress in your diagnostics? Perhaps the resistor itself is bad? Have you checked it with a multimeter?
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
#41
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Re: NO CEL w/ key on and no spark?
It's towards the passenger side and has a similar look to the tranny resistor next to the battery.
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Dave - 03 Baja - 92 SVX - 86 Brat - 08 OB 3.0 |
#42
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Re: NO CEL w/ key on and no spark?
Today i'll be picking up a loaner resistor and modulator and maybe a pump.
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1991 SVX L JDM |
#43
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Re: NO CEL w/ key on and no spark?
Could a bad modulator/resistor cause a car to run rich? My car has been running roughly 30 psi fuel pressure. It ran up until today. Could it be that that was a warning sign for what happened today (if my problem is indeed the same as mikes?)
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
#44
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Re: NO CEL w/ key on and no spark?
With the FPR disconnected it should have 36.3 PSI.
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www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link |
#45
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Re: NO CEL w/ key on and no spark?
Returned to the car after work, and she fired right up...
The only thing that could make sense was that the engine flooded. But still, the CEL light would NOT illuminate this morning. It even flashed at me a couple times immediately before the car died. I am not sure what is going on, but I am going to buy a different car as a daily driver. I cannot afford to be stranded on the way to work because of some electrical gremlin. I still love my car though, and am looking forward to being able to tear into her without the worries of having her drivable again by monday morning. I do not intend to hi-jack this thread any more, so I am going to start a thread for my specific problem, and attempt to work through it there. Good luck with your problem mike, I hope you figure it out soon.
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
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