300m idles low and missing . no oil pressure or oil temp readings

SOURCE: Low Oil pressure light in idle at stop

Depending on the amount of miles, maintenance records, or how hard the car has been driven either by a previous owner, or by yourself. The engine's main crankshaft bearings or the connecting-rod bearings could be excessively worn.

Also, it could very well be a wiring problem to the sensor and/or computer causing the problem.

SOURCE: while i'm idling at a dead stop, the oil pressure

Have the oil pressure tested with an accurate mechanical gauge. often the sending unit goes bad, but without testing it could cost you an engine before you find the problem.
If the mechanical gauge shows same low readings, you have internal engine wear (likely worn crank/rod bearings) Then, it's your decision on whether to drive it till it expires, repair it or buy a new vehicle.

SOURCE: 2003 Chevy Silverado Instrument cluster missreads

replace instrument panel cluster

SOURCE: low oil pressure 93 GMC P/U w/350 motor w/205,000 miles gauge

While engine is running, open the cover where you add oil to engine and see if you see a good flow of oil, if good flow, could be as easy as replacing oil sending sensor. got to realize that if poor maintenance history your engine may not be building enough pressure at iddle to move your hydraulic operated valves, only when you rev it up it will pump enough to run smooth. if running engine too long, you may cause more damage to other engine components such as crankshaft and cam shaft bearings. if you can spare a few bucks, have a good mechanic check your oil pressure with a mechanical gauge. another cheap option is to replace oil pump. last resort if you love your truck as much as we do,replace engine or rebuild it. At 205,000 this is a normal symptom, other than timing chain problems, most engines don't make it that far. hope this helps!

Ned White

• 2100 Answers
• Posted on Mar 14, 2010

SOURCE: oil pressure low when idling. When running engine

That is normal, my truck , if it had a light , it would be on, the gauge goes to about 0 when idling and flies right back up when going, When it stops moving is when I'll get worried about it. You might try heavier oil this summer and see if that changes anything. Go with a 10w40. If you are already using this, try straight 40 one time. Hope this helps.

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