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Kevin. I have a 2004 suburban 1500 4X4 with a 5.3l. my oil pressure gauge has been fluctuating a bit for a few weeks. yesterday it hit zero and stayed there in the driveway and the low pressure info message came on. The oil level is good and clean. The has been a knocking or lifter noise in the mornings but goes away during warm up. Now, I don't know if this is related, but last month I started loosing dexcool...I have been adding about a gallon during the course of 6 weeks. It does not seem to show up in the oil, but it isn't leaking anywhere I can see either. some water vapor out of the pipe, maybe more than normal but not sure. Is the oil pump bad? and could the other issue with coolant also be a factor or are they two separate issues?

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  • Chevrolet Master
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I would say the o-ring on the oil pump and you have a bad head gasket or intake gasket and that is where your coolant is going.

Posted on Mar 21, 2017

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6ya6ya
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Posted on Jan 02, 2017

emissionwiz
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SOURCE: flashig oil light

You either have a loose/worn engine bearing or a worn out oil pump, do not drive the car this way, you will cause serious damage to the whole engine. A oil switch is for a light, it turns on the light when oil pressure falls below about 10 PSI, a sending unit is for a guage that shows oil pressure with a scale, it may have numbers on the guage or just green and red, or high and low.

Posted on Oct 10, 2008

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SOURCE: heater blowing cold air

My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Posted on Oct 16, 2009

seanpwright
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SOURCE: 1990 GMC Sierra lifters knocking. Oil pressure

I doubt it....It could be a totally worn out engine.

Posted on Nov 13, 2009

  • 4088 Answers

SOURCE: 2000 Ford F-150. The oil temp warning light came

Make sure the oil level is correct. If the engine bearings are getting worn, the oil pump is worn or it's screen plugged, that can cause low-RPM weak oil pressure. Try running with 'high mileage' oil at your next oil change and always replace the filter. At some point, you may need to consider overhauling or replacing the engine. Good luck!

Posted on Jun 06, 2010

  • 3072 Answers

SOURCE: 2004 VW Bug leaking antifreeze. small puddles

the VW beetle has a plastic radiator, where the cap is if you look to the front of that it does a 90, it is cracked there. Here is the fun part, with a throx wrench ( I think it was a T-30) take apart the fenders and front bumper. At the auto parts store there is a plastic tank repair kit, the kit includes resign,fiber glass cloth, and a stick. You will need to rough up the crack as it is right where it angles and lay on the cloth and resign. Let it dry and it will not leak from there again. Good Luck Tim

Posted on Sep 23, 2010

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