11-20-2017 | #1 |
Join Date: Jun 2017
Location: AR
Posts: 73
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Secondaries not working
My friend just brought a 90 Z with 54k miles. There is no difference with the power key on or off. The car seems to run great uo until 5800 to 6000 and then it stopspulling and won't wind any further.
The vacuum pump runs and then shuts off like it should, and no check engine light. My thoughts after doing a search is check the fuel pumps. How do you do this? Is it just pulling the pump 2 fuse? I was also going to check the intake accordion hose. What else should I check? Thanks, Shawn Sent from my SM-G930V using ZR-1 Net Registry mobile app |
11-20-2017 | #2 | |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Secondaries not working
Quote:
Secondary Functional Test and Reconditioning the Secondary Actuators
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 11-20-2017 at 12:13 PM. |
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11-21-2017 | #3 |
Join Date: Aug 2014
Location: Kansas City, MO
Posts: 838
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Re: Secondaries not working
How is your Oil Temp? If the oil temp is too low or the sensor is bad it will not open the secondaries.
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Looking for a ZR-1 1985 Yamaha RZ350-NOT STOCK 1971 Yamaha AT1-Middle of a restoration |
11-21-2017 | #4 |
Join Date: Jun 2017
Location: AR
Posts: 73
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Re: Secondaries not working
He let it idle for 15 minutes and the oil temp gauge barely moved.
I am out of town, so I can't compare it to mine. It would be nice if that is the problem. Sent from my SM-G930V using ZR-1 Net Registry mobile app |
11-25-2017 | #5 | |
Join Date: Nov 2016
Location: Southlake, TX
Posts: 590
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Re: Secondaries not working
Quote:
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Bill Schroeder Texas Proud! 1991 Corvette ZR1 #1388 2015 Challenger Scat Pack Shaker |
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11-25-2017 | #6 | |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Secondaries not working
Quote:
Low oil flow at Idling (low engine rpm) is another factor and like Bill suggests....taking the ZR-1 for a ride at higher RPMs gets the oil flowing at much greater flow rates through the Heads where the oil prolly obtains more heat.
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 11-26-2017 at 07:06 AM. |
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11-25-2017 | #7 |
Join Date: Jun 2017
Location: AR
Posts: 73
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Re: Secondaries not working
We took it for a drive but at that time I did not know to look at the oil temp. I am going to try to go over there tomorrow.
He used a scanner and there were 8 stored codes. Je took them down so now we will clear the codes and take it for a drive. Something weird that happened is the car went dead in his garage. The negative cable was loose and when he went to tighten it, it fell off in his hand. We will correct that also. Thanks for all the help I hope to know more tomorrow. Sent from my SM-G930V using ZR-1 Net Registry mobile app |
11-27-2017 | #8 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Secondaries not working
Some here will try to convince you to remove the Secondaires I have removed secondaries on one 91' (Removed.....NOT wired open) and have restored the secondaries on a 95' and three 90's. Restoring the secondaries is relatively easy. And keeping the secondaires functional you maintain the most unique feature of the ZR-1 which is the FULL POWER Mode (Parts Left Out Change the Unique Features of the ZR-1)
You still have not confirmed the Secondary Functional Test. Maybe your FULL POWER Key is not functional as simple as that which can also be restored. TOP END RESTORATIONS SUMMARY Post 62 - 1990 (#2067) LT5 Top End Rebuild (C5 Z06./Wilwood Brakes, SW Headers, Aluminum Radiator) Post 76 - 1991 (#1427) LT5 Rebuild (C5 Z06/Wilwood Brakes, SW Headers, Ron Davis Radiator) Post 119 - 1990 (#3032) LT5 Top End Rebuild (Fluidyne Radiator) Post 133 - 1990 (#0072) LT5 Top End Rebuild (Ron Davis Radiator) Post 230 - 1995 (#0186) LT5 Specific Top End Rebuild (C5 Z06/Wilwood Brakes, Fluidyne Radiator) Post 261 - 90’ (#8550) Corvette (L98) Modifications (SW Headers, Ron Davis Radiator)
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 11-27-2017 at 06:41 AM. |
12-01-2017 | #9 | |
Join Date: Mar 2015
Location: New Zealand
Posts: 385
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Re: Secondaries not working
Quote:
Sent from my SM-G930F using ZR-1 Net Registry mobile app |
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12-01-2017 | #10 | |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Oil Temperature and Brake Conversion
Quote:
I used Wilwood Rotors so the adapter may be a bit different. Regarding Wilwood Rotors Adapter....ZR-1 (90' and 91') Wilwood Rotors and C4 to C5-Z06 Conversion
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 12-01-2017 at 02:43 PM. |
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