Oil pressure guage jumping around. - ZR-1 Net Registry Forums

Z51JEFF · 02-26-2018

This only happens at highway speeds,is this the sending unit going out and is it the sender on the oil filter housing?

Dynomite · 02-26-2018

I would change out the Dash Gauge Sensor......you did not say what the readings were?

Jerry's Oil Pressure Sensor Dash Gauge

Easy to remove and easier to install. I think Channel Locks as it is like 1/4 inch pipe thread.
27 mm Open End wrench will fit also

Z51JEFF · 02-26-2018

Thanks Cliff now where can I find the socket to remove it and where can I find the sender?

tccrab · 02-27-2018

Jerry's Gaskets for the Oil Pressure sender:
http://www.jerrysgaskets.com/search....sensor&x=0&y=0

randy ransome · 02-27-2018

My 95 use to jump around and it was the oil pressure switch. The plastic part had come loose from the Big nut it connects to. Changed switch and had proper readings.
Good Luck.

Dynomite · 02-27-2018

Quote:

Originally Posted by randy ransome

My 95 use to jump around and it was the oil pressure switch. The plastic part had come loose from the Big nut it connects to. Changed switch and had proper readings.
Good Luck.

Removing Oil Pressure Switch TIPS

Paul Workman removed the Oil Filter Adapter with great success to get at the Oil Pressure Switch

JFFerner · 02-27-2018

Be sure to buy from Jerry. I tried two different ones acquired locally from nationwide retailers and both were junk. In both cases they had been calibrated incorrectly or not calibrated at all. The one I bought from Jerry worked properly every time. Jim

randy ransome · 02-27-2018

Quote:

Originally Posted by JFFerner

Be sure to buy from Jerry. I tried two different ones acquired locally from nationwide retailers and both were junk. In both cases they had been calibrated incorrectly or not calibrated at all. The one I bought from Jerry worked properly every time. Jim

Yeah, I bought mine from Jerry, it works like a Champ.

GOLDCYLON · 02-27-2018

I think I have replaced three of these on the 91 in 12 years. The failure rate is high on these. I remember the one time the gauge dropped to zero and I shut the car off immediately. The last two failures were the waggity needle failure.

Z51JEFF · 03-02-2018

Thanks for the info everybody,I’ll have to get in touch with Jerry for the part and the socket.

02-26-2018	#1
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,077	Oil pressure guage jumping around. This only happens at highway speeds,is this the sending unit going out and is it the sender on the oil filter housing?

02-26-2018	#2
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,797	Re: Oil pressure guage jumping around. I would change out the Dash Gauge Sensor......you did not say what the readings were? Jerry's Oil Pressure Sensor Dash Gauge Easy to remove and easier to install. I think Channel Locks as it is like 1/4 inch pipe thread. 27 mm Open End wrench will fit also __________________ 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; 02-27-2018 at 12:47 AM.

02-26-2018	#3
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,077	Re: Oil pressure guage jumping around. Thanks Cliff now where can I find the socket to remove it and where can I find the sender?

02-27-2018	#4
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,654	Re: Oil pressure guage jumping around. Jerry's Gaskets for the Oil Pressure sender: http://www.jerrysgaskets.com/search....sensor&x=0&y=0 __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]

02-27-2018	#5
randy ransome Join Date: Mar 2006 Location: Olive Branch,MS Posts: 291	Re: Oil pressure guage jumping around. My 95 use to jump around and it was the oil pressure switch. The plastic part had come loose from the Big nut it connects to. Changed switch and had proper readings. Good Luck.

02-27-2018	#7
JFFerner Join Date: Jan 2012 Location: Dallastown, PA Posts: 189	Re: Oil pressure guage jumping around. Be sure to buy from Jerry. I tried two different ones acquired locally from nationwide retailers and both were junk. In both cases they had been calibrated incorrectly or not calibrated at all. The one I bought from Jerry worked properly every time. Jim

02-27-2018	#9
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: Oil pressure guage jumping around. I think I have replaced three of these on the 91 in 12 years. The failure rate is high on these. I remember the one time the gauge dropped to zero and I shut the car off immediately. The last two failures were the waggity needle failure. __________________ 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

03-02-2018	#10
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,077	Re: Oil pressure guage jumping around. Thanks for the info everybody,I’ll have to get in touch with Jerry for the part and the socket.