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02-24-2009
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#11 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: New Tune on car, problems
Ken,
What do you mean "Marc took secondaries out of the tune?" Do you have secondaries operative? You can't take error codes out. The calibration is setup so the error codes are not set. Last edited by XfireZ51; 02-24-2009 at 09:30 AM. |
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02-24-2009
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#12 | |
 
Join Date: Jul 2007
Location: Las Vegas
Posts: 298
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Re: New Tune on car, problems
Quote:
Car runs smooth on acceleration and part throttle applications, so something must be correct. And I know it's a lot cleaner under the plenum now.
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1990 Grey/Black Too many for the sig. |
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02-24-2009
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#13 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: New Tune on car, problems
The symptoms you describe are nearly identical to the ones I ran into last summer. Same codes. It got fixed by installing new fuel pumps and new strainers.
My calibration is setup like yours where the secondaries are ON all the time except for idle. Marc told me how to change the calibration. |
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02-24-2009
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#14 | |
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Join Date: Jul 2007
Location: Las Vegas
Posts: 298
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Re: New Tune on car, problems
Quote:
Based upon my further testing last night and talking to Jeff Flint, I'm rapidly coming to the same conclusion. Pump pull scheduled for later today (hopefully)!
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1990 Grey/Black Too many for the sig. |
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02-25-2009
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#15 |
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Join Date: Jul 2007
Location: Las Vegas
Posts: 298
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Re: New Tune on car, problems
So the code 55 hasn't come back, I consider it a dead issue.
But now it's issuing code 63 and 64 regularly. The fuel pressure seems to be functioning ok. I got the FP gauge (autometer 2663) on the a-pillor to work again, along with the air-fuel ratio gauge (autometer 2675). Fuel pressure is fairly reative after putting fresh fuel in the car this evening. Fuel pressure is 42 PSI at an idle or light cruising. Upon acceleration, it immediately goes to 53 PSI. The A/F gauge however, is a different story. It rocks back and forth from absolute lean to rich rapidly. Could be a loose connection on the connector to the o2 sensor, or could be the o2 sensor on both sides. The car was running very rich for a while until I put the new tune on the chip. Probably need to mention the A/F gauge is only tied to the left side o2 sensor. But I'm still getting 63 and 64 codes, indicating lean conditions on both sides. Could it be the o2 sensors are plugged?
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1990 Grey/Black Too many for the sig. |
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02-25-2009
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#16 |
 Join Date: May 2005
Location: Nichols, FL
Posts: 615
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Re: New Tune on car, problems
Pull a plug on each side and see what they look like. Old school but effective.
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55 Polo White (Project) 61 Jewel Blue (Sold to buy above) 66 Nassau Blue 68 Torch Red 88 ZR1 Blue 90 ZR1 White |
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02-25-2009
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#17 |
   
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: New Tune on car, problems
hmm swaping from lean to rich? It sounds like a bad o2 sensor as one side is trying to compensate for the other or maybe a bad cat on one side causing the values to bounce?
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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02-25-2009
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#18 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: New Tune on car, problems
no the A/F gauge is on a narrow band O2.. I am guessing the OEM one right?
Anyway, it will go back and forth.. better bet is having a wideband with gauge to be accurate
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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02-25-2009
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#19 | |
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Join Date: Jul 2007
Location: Las Vegas
Posts: 298
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Re: New Tune on car, problems
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1990 Grey/Black Too many for the sig. |
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02-25-2009
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#20 | |
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Join Date: Jul 2007
Location: Las Vegas
Posts: 298
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Re: New Tune on car, problems
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I'm going to have to find my laptop that I used for recording on the diag connector so I can post voltages.
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1990 Grey/Black Too many for the sig. |
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Linear Mode
