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04-10-2019
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#31 |
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Join Date: Dec 2018
Location: Long Beach, CA
Posts: 73
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Re: 1990 ZR-1 Hesitation when full Power
So the system JUST threw a code 55, which it has never done before. Also at the risk of sounding stupid where is the second map sensor?
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04-10-2019
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#32 |
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Join Date: Dec 2018
Location: Long Beach, CA
Posts: 73
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Re: 1990 ZR-1 Hesitation when full Power
So is there a good way to test the coils or just 4 new? Plugs are new and wires ohmed good.
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04-10-2019
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#33 | |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: 1990 ZR-1 Hesitation when full Power
Quote:
H
__________________
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. Last edited by Ccmano; 04-10-2019 at 09:14 PM. |
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04-10-2019
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#34 | |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: 1990 ZR-1 Hesitation when full Power
Quote:
H
__________________
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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04-10-2019
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#35 |
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Join Date: Dec 2018
Location: Long Beach, CA
Posts: 73
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Re: 1990 ZR-1 Hesitation when full Power
Coils were supposedly replaced by the PO and look relatively new.
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04-10-2019
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#36 |
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Join Date: Dec 2018
Location: Long Beach, CA
Posts: 73
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Re: 1990 ZR-1 Hesitation when full Power
I still probably order new wires and coils to be safe as 4th gear low speed bucks quite a lot
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04-10-2019
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#37 |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: 1990 ZR-1 Hesitation when full Power
Do you have a Factory Shop Manual? Diagnostics for code 55 can be found on pages 6E3-A-78 and 79.
H
__________________
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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04-10-2019
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#38 |
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Join Date: Dec 2018
Location: Long Beach, CA
Posts: 73
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Re: 1990 ZR-1 Hesitation when full Power
I do not yet. I'll check eBay or something later tonight and probably order one. In the meantime do you think you could PM me the one page?
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04-10-2019
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#39 |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: 1990 ZR-1 Hesitation when full Power
Here you go...
 
__________________
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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04-10-2019
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#40 |
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Join Date: Dec 2018
Location: Long Beach, CA
Posts: 73
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Re: 1990 ZR-1 Hesitation when full Power
Okay, I'll test it later when I am out of school. One thing I did notice is my car would stay in closed loop - I assumed it would go into open loop once warm, no?
edit: i see I had it backwards. I will do this test tomororw! Thank you for the picture. Last edited by frantinoro; 04-10-2019 at 10:04 PM. |
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