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possible ground loop somewhere? fuel pump relay .....?
Sure you'll figure it out.
Sure you'll figure it out.
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1996 Grand Prix | 3100v6 L82 | T04E-50 Turbo | Getrag 282 w/ EP LSD | SPEC-3 Clutch -
For whatever reason I seem to mess up the plug wires on mine sometimes and I swap 1-3-5 with 2-4-6. Hate to admit it but I've done that like 2 times in the past.
It's easy to get confused when your used to a front engine FWD, then you get a mid engine RWD tranverse, then a RWD longitudinal, lol. I don't even remeber if 1-3-5 is pass or driver side now that I think of it.
Pretty sure on the Fiero, 1-3-5 is towards the back..(closer to the taillamps.)11.92 @ 122 MPH 3400 91 Cavalier Z24 Intercooled S/C. -totalled-
10.56 @ 130 MPH 3900 LZ9 87 IROC Z28 Intercooled GT4088 TurboComment
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Cyl #1 is supposed to be the one closest to the accessories, correct? I double checked the plug wires twice last night and I'm pretty sure they're correct. Here's the vid:
Fuel pump seems to be working fine. It seems like every time the engine stalls it's getting too much fuel and we have to unplug the fuel pump relay before it will start again. Right now the fuel pressure is set at about 45psi. I'm going to try a different tune to see if that makes any difference. I've already tried leaning out the current tune quite a bit with almost no change.
Originally posted by Mars View PostFor whatever reason I seem to mess up the plug wires on mine sometimes and I swap 1-3-5 with 2-4-6. Hate to admit it but I've done that like 2 times in the past.
It's easy to get confused when your used to a front engine FWD, then you get a mid engine RWD tranverse, then a RWD longitudinal, lol. I don't even remeber if 1-3-5 is pass or driver side now that I think of it.
Pretty sure on the Fiero, 1-3-5 is towards the back..(closer to the taillamps.)'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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Sweet! lets see it on the road now!"I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."Comment
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Bouncing FP gauge peeks my curiosity. How is the voltage reading as it wants to stall? Maybe goofy IAC function?
She still sounds bad ass, gonna be a fun car.Last edited by TGP37; 01-25-2013, 08:48 AM.1996 Grand Prix | 3100v6 L82 | T04E-50 Turbo | Getrag 282 w/ EP LSD | SPEC-3 ClutchComment
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What doesn't make sense to me is that I can't get it to stay running unless the throttle is constantly moving.
There could be something wrong with the injectors or wiring. The fuel pump wiring is the same as before except for the wire going from the relay to the ECM.
Anyways, I won't have a chance to do more troubleshooting until tomorrow.'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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Wiring, could be a bad connection that is opening/closing the circuit......might be a ground wire. I'd also be curious of the logged data of the TPS while throttling to keep it alive.
I know my TPS is very sensitive to moisture. Just a little too much and it creates dead spots. An idea anyways.Last edited by TGP37; 01-26-2013, 12:24 PM.1996 Grand Prix | 3100v6 L82 | T04E-50 Turbo | Getrag 282 w/ EP LSD | SPEC-3 ClutchComment
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The TPS reading appears normal to me. The MAP sensor reading on the other hand I'm not sure about, but has anyone tested a 3-bar with nAst1 before? I think I'm gonna try my Fiero tune with a different base pulse constant and a 1-bar plugged in to see if it will idle.'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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I had to set 4 different tables to use a 2 bar map on the 97 PCM (though we have different PCM's). Considering the tune, map table data, this could be the issue.
Maybe your PCM is believing you have a 1 bar reading 3 bar data. That would set the barometric pressure at 1/3 of what it really is, among other fueling calculations.1996 Grand Prix | 3100v6 L82 | T04E-50 Turbo | Getrag 282 w/ EP LSD | SPEC-3 ClutchComment
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I set all the flags and scalars I could find to enable 3-bar use. But there still could be something ip'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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4 scalars, 1 flag, 2 tables.
those are everything so far that is effected by having an above 1BAR MAP sensor.
EDIT: you are using a 9396, yes?Comment
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Yes a 9396 from a 93 Grand Prix.'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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3500T log1.zip
Here is a log for the run where I took the video. I'm using nAst1 1.06.1. The bin I used is also in that file. I started at first with the BPC set to 104 but it's now at 84 because I was trying to lean out the tune. For the boost and spark multiplier table I just put in some guesses but that shouldn't matter for now anyway.'89 Firebird, 3500 Turbo, T56, 9-bolt/4.11
'86 Fiero, 3500, 4-speedComment
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were you driving during this log? the VSS is showing activity.
running a simulated narrowband for the ECM or is it a real narrowband? either way, it was showing max lean at certain parts in the log.
MAP and TPS look to be functioning normally.
you're showing 0 fuel pump voltage at all times.... this will cause injector compensation issues. either the wire is broken going to the ECM from the fuel pump monitor circuit or the ECM might be borked internally? battery voltage was very healthy.
the BPC is set to 64?!? how large of injectors are you running?
the BPW multiplier while in boost table: the 100kPa column NEEDS to be 1.000, the 0.000 in it will cause issues when nearing boost.
there's a few other potential issues, but let's deal with known ones first.Comment
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