OK that was wierd
Thread Starter
Heel & Toe
Joined: Jul 2016
Posts: 17
Likes: 0
OK that was wierd
While driving down the highway and stuck in the slow lane waiting behind a garbage truck, I was being patient and waiting for the on ramp just past the next exit to make my move. Ambient air temp was around 90 and I had been in 4th gear doing 50 or so for about 1.5 miles. All of a sudden I got the DIC alert to check gauges and noticed the Oil Pressure Gauge went down to zero, and then immediately went back to about 45/50 PSI as normal...and alarm went away just as fast. I'd call this an anomaly but with just 2600 miles on my pre-owned C5 coup (53600 miles) it took me by surprise.
Electrical gremlin? Car drove fine rest of the way to meet my wife for lunch, back to work, and back to home.
Oil Pressure sender was just replace less than 2K miles ago by the dealer I bought the car from...
Sound familiar?
Electrical gremlin? Car drove fine rest of the way to meet my wife for lunch, back to work, and back to home.
Oil Pressure sender was just replace less than 2K miles ago by the dealer I bought the car from...
Sound familiar?
Last edited by Wylie1; Aug 18, 2016 at 11:24 PM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Full moon? Sun Spots? Could be a number of issues.. Just keep an eye on it and see what plays out.
Is your PCM Tuned with an aftermarket tune? I had a corrupt tune up load once and had several IPC gages go hay wire. I have my own EFI Live and I had just up-loaded a new tune and had some weird gage readings. Up-loaded the tune again and all was GOOD!
All the IPC gages are not a direct reading from the engine. That oil pressure reading comes from the sensor, goes to the PCM and goes through the BCM as a serial data signal and then to the gage on the IPC. The sensor provides the PCM a sensor voltage and the BCM sends the IPC the info.
SO, you need to find out if the oil pressure is bad, the sensor is bad OR the of serial data transfer of the signal failed..
BC
BC
Is your PCM Tuned with an aftermarket tune? I had a corrupt tune up load once and had several IPC gages go hay wire. I have my own EFI Live and I had just up-loaded a new tune and had some weird gage readings. Up-loaded the tune again and all was GOOD!
All the IPC gages are not a direct reading from the engine. That oil pressure reading comes from the sensor, goes to the PCM and goes through the BCM as a serial data signal and then to the gage on the IPC. The sensor provides the PCM a sensor voltage and the BCM sends the IPC the info.
SO, you need to find out if the oil pressure is bad, the sensor is bad OR the of serial data transfer of the signal failed..
BC
BC
Last edited by Bill Curlee; Aug 19, 2016 at 12:12 PM.
