Low oil pressure under load

btwilson86 · 09-18-2014, 05:14 AM

Its not uncommon for the OEM guage to quit working; all it takes is one brief moment of the signal wire shorting out to kill it.

You say you have an aftermarket gauge installed now? Is this a mechanical gauge (oil filled line running directly to the gauge in your car) or an electric gauge (sending unit like OEM with wire running to the gauge)?

Electronic sending units fail, sometimes fairly often depending on quality of parts, and this can be the source of your strange readings.

I would first verify your oil level is correct, then temporarily hook up a mechanical oil pressure gauge to verify your SunPro gauge is reading accurately.

09-18-2014, 05:14 AM	#4
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Its not uncommon for the OEM guage to quit working; all it takes is one brief moment of the signal wire shorting out to kill it. You say you have an aftermarket gauge installed now? Is this a mechanical gauge (oil filled line running directly to the gauge in your car) or an electric gauge (sending unit like OEM with wire running to the gauge)? Electronic sending units fail, sometimes fairly often depending on quality of parts, and this can be the source of your strange readings. I would first verify your oil level is correct, then temporarily hook up a mechanical oil pressure gauge to verify your SunPro gauge is reading accurately. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels