Question about 2005 Chevrolet Tahoe
HOWDY all, I was driving my tahoe for about two hours and it statred to run rough at idle. then when I came to a complete stop it died on me one time. The oil pressuer guage was low prior to it shutting off. It seemed like it was running a little rough from then on. But it has not dropped the pressure again. It sits at about 20 PIS at Idle. I had a problem with the guage about a month back and I replaced the oil pressure sensor and it ran fine up till now. Any ideas??? Is it worth taking to the dealer?
Avoid dealers if u can-solo shops hav much bettr mechs--prbly hav a vacuum leak-listen for any hissing-car wil run normal at hiway spd--egr valves give hidden leaks and cause stallin specially at decel--throttl body cud hav issues too-along w the position sensor and idle air -may want to run a scan for a history of any codes even tho engine lite not on--thats really low miles -use synthetic oil and u get 300thou
Posted on Mar 25, 2014
Were there any engine noises such as a lifter tick? If it were mine I'd be installing a manual oil pressure gauge to verify what the oil pump is up to. There were issues with the oil pump pickup screen o-ring. Either way, it should be looked into.
Posted on Mar 24, 2014
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Posted on Jan 02, 2017
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.
Posted on May 16, 2008
SOURCE: Rough running and rough idle
Doesnt sound at all like an electrical control issue... more like a tune up...
How many miles? If its hard to start its typically due to spark plugs being worn down with age.. that engine has individual coils per cylinder so there are no "cap, rotor or wires" involved... just replace the plugs, they are platinum and they are about 8-9$$ each x8... but that is what you need
Posted on Nov 25, 2008
Sounds the EGR valve and EVP sen is bad even if you tested it. The EGR valve cntrols idle and if carbon up will make the car stall or idle high and low (rpms going up and down) This was common on all cars during that time. I would say replace the EGR valve and senosr. This should take care of the problem. One more thing have the fuel pressure check on the car.
Posted on Mar 20, 2009
SOURCE: oil pressure drops to 0 at idle
OOO not good sounds like some of the head gasket got stuck somewhere, or the gauge or sender is bad or got knocked around when repairing the head gasket. I would check that first. If that checks out will need to drop the pan to see if something got stuck in the pickup tube,might as well change the pump while you are there. Or worst case some thing wrong with gasket job impeading oil flow back to bottom of the engine. Was the oil and filter changed ?if so pull out filter and see if an chunks are stuck in it now. And change oil and filter again. Sorry that was out of order I had a long day
Posted on Apr 24, 2009
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