Question about 1993 GMC Suburban

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Sudden change in oil pressure gauge

Resently my oiul pressure guage start reading high I have a 1993 gmc suburban and the oil sending unit had been changed . what is the normal reading of the truck while driving. and do the gauge suppose to fluctuate while driving betweel 30 to 60. please help. what can cause this if it's a problem and how can i fix it.it use to stay readind 30 at all time now it read around 35 to 60 and 60 being the highest.

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It is normal on a Chevy for the oil pressure guage to fluctuate based on the rpm's of the engine. The faster the engine is turning, the higher the pressure. If it is fluctuating without a change of engine speed, then you may have a REAL Big problem such as low or no oil in engine or the oil pump itself is going bad. Could also be a blocked oil filter. You surely change your oil regularly....right?

Posted on Feb 02, 2009

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DIAL IN CAB COULD BE AT FAULT, NEED TO GET ANOTHER DAIL GUAGE AND CONNECT TO SENDER, IF SAME COULD BE SENDER, IF STILL THE SAME, PRESSURE VALVE IN BLOCK STICKING DUE TO DIRT OR U/S, OR AT WORSE !!! ENGINE WORN, THIS WILL BE CONSTANT IN MOST CASES, FAULT IN GUAGES ARE NORM INTERMITANT.
LOTUS

Posted on Feb 02, 2009

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