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06-02-2017
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#1 |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Secondaries issue...
Looking for some group input. Still a little rusty at this.
Power key on... nothing happens, no kick in pants. So far I've done the pink wire test and confirmed the activation works. The vacuum pump barely runs with the ignition on so i don't see a leak. Power key light comes on. Oil temp gauge reads about 120 to 180 under normal driving. Going to check the fuel pumps next. Interesting... getting 7amps and 49# at rest using Paul's sticky method, question is, is that enough to get nothing out of the secondaries? My guess is that the primary pump is good, she drives and idles nicely. The secondary pump must be close to dead. I think I'll pull the fp1 fuse and see what I get. Fp2 by itself (fp1 fuse pulled) does 3.3amps and 49#. Still not sure if that by itself would cause the secondary issue. Any thoughts? 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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06-02-2017
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#2 |
 Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,486
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Re: Secondaries issue...
Other than "kick in the pants" are you sure they aren't opening?
Somewhere safe, punch it. If it only revs to 5k or so, no secondaries. If it whips to 7 grand... |
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06-02-2017
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#3 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Secondaries issue...
So cheap why not replaced them....
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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06-02-2017
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#4 | |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Secondaries issue...
Quote:
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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06-02-2017
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#5 |
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Join Date: Jan 2017
Location: US
Posts: 233
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Re: Secondaries issue...
If the car races to 7000 it might be if you don't have a good history of car the secondaries may have been taken out or disabled at sometime.
Sent from my XT1585 using ZR-1 Net Registry mobile app |
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06-02-2017
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#6 |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Secondaries issue...
Trust me guys, this is my second Z, I know the difference between full power and normal power. On this car there is no difference between power key on or off. The test where 12 volts is applied to the pink wire on tHe control unit moves the actuators. I can see and hear them move. I may very well have to pull the plenum and test everything.
Just want to make sure I haven't missed anything obvious. Thanks 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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06-03-2017
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#7 | |
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Secondaries issue...
Quote:
AND, that said, are we sure the "accordion" air hose is NOT collapsing? That too can severely hamper the "seat of the pants" thrust of the secondaries opening. Jerry's Gaskets has the Samco type hose replacement, or Marc Haibeck provides some wire rib loops to reinforce the OE hose to keep it from crushing under hot, WOT periods. And, you may recall that I built an aluminum inner sleeve to not only reinforce the OE hose, but smooth the air flow to reduce drag and (theoretically) increase air flow. Just a thought.  .
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 06-03-2017 at 09:59 AM. |
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06-03-2017
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#8 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: Secondaries issue...
Hans,
U getting any codes when u go WOT?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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06-03-2017
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#9 |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Secondaries issue...
Paul, good point, the accordion piece looks very suspicious. Think I'll take it off and go for a drive. Had Haibeck pieces on the other car.
Dom, I should probably do that. I haven't checked for codes because there no lights on in the DIC. Funny, for me the best part is the challenge of working on these cars. 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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06-03-2017
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#10 | |
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Secondaries issue...
Quote:
 
__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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