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#21 | |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Based on what I saw on your post in CF, looks like the Austin Corvette guys are reasonably competent and feel it may just be a connector issue. H ![]()
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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#22 |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,152
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Rockauto has the WRONG ECM listed for the LT5, as do many of the automotive places (Autozone, Advance, etc)
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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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#23 |
![]() ![]() ![]() Join Date: May 2007
Location: Peoria, AZ
Posts: 9,153
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No way thats an LT5 ECM
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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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#24 |
Join Date: Apr 2018
Location: Lone Star State
Posts: 99
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Update: Had car shipped back from Austin a couple weeks ago. Austin Corvette tried a few things including cleaning ignition module connector. Car ran ok for a few miles, afterward, but then started missing again. Decided to ship it home and see if I could sort it out on my own. I read a post that suggested re-seating the EEPROM. Removed ECU today, reseated EEPROM and re-seated ECU connectors. Took it out for a 10 mile road test and so far it's running like a champ. Will let it sit overnight and run it from a cold start tomorrow. Crossing my fingers!
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Ross Lone Star State 90 ZR-1 Red/Red (Sold) 94 ZR-1 Blk/Blk (Sold) 91 ZR-1 DRM/Tan (Sold) 90 ZR-1 Red/Red (Sold) |
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#25 |
![]() Join Date: Jun 2020
Location: Houston, TX
Posts: 183
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Hope that's what it was!!
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#26 |
Join Date: Apr 2018
Location: Lone Star State
Posts: 99
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Well, after sitting overnight, started up this afternoon, and it's missing again.
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Ross Lone Star State 90 ZR-1 Red/Red (Sold) 94 ZR-1 Blk/Blk (Sold) 91 ZR-1 DRM/Tan (Sold) 90 ZR-1 Red/Red (Sold) |
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#27 |
![]() Join Date: Jan 2006
Location: Decatur, AL
Posts: 1,112
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Check your alternator connection - not just visually but remove and clean if you can, plus check your battery terminals and check your alternator with a DVM.
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Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454 |
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#28 |
![]() Join Date: Jun 2015
Location: Texas
Posts: 530
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Probably a good idea to check your battery connections as well. First rule of troubleshooting, start with the easiest thing first.
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#29 |
Join Date: Apr 2018
Location: Lone Star State
Posts: 99
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..ECU is back from repair. Started up fine and drove it 60 miles no issues. Have a SES light, but when I check codes, I only get a Code 12. Start it up and the SES light returns?
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Ross Lone Star State 90 ZR-1 Red/Red (Sold) 94 ZR-1 Blk/Blk (Sold) 91 ZR-1 DRM/Tan (Sold) 90 ZR-1 Red/Red (Sold) |
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#30 |
Join Date: Apr 2018
Location: Lone Star State
Posts: 99
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Ok...ECU is on it's second trip back from G7 Computer Repair. Looks like the are calling it a software issue. We'll see. Don't expect to receive it until next week, though.
"The computer you sent here has been repaired. There was a software failure on the board, so the unit did not need to be opened (which is always better for it) because the hardware all tested OK. Software repairs typically take longer than hardware faults, so a lot of time was put into this unit. Usually when the computer fails, so does another part on the vehicle, and if all the damaged parts on the vehicle are not replaced at the same time, then the original problem may still exist, or even cause damage again to the computer (which is not covered under warranty, as stated in the Terms and Conditions on the website) and/ or vehicle. Anything electrically related to the symptoms with the vehicle should be checked. It could not be determined if the fault was a result of another problem with the vehicle or a manufacturer's defect because the vehicle was not here for inspection. Your computer was shipped back out within one business day after it arrived here (as stated in the Terms and Conditions, "one day" is defined as shipping out by the end of the following business day that the computer is received here from the customer)."
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Ross Lone Star State 90 ZR-1 Red/Red (Sold) 94 ZR-1 Blk/Blk (Sold) 91 ZR-1 DRM/Tan (Sold) 90 ZR-1 Red/Red (Sold) |
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