here's the problem. when i drive my blazer for a long while i see my oil pressure start to drop but it only does that when i'm easing my foot off the accelerator. but its normal when the engine is cool. i've checked my oil to make sure it's not leaking out but its perfectly fine. people are telling me it might be my cat converter. i don't know. i don't think it is. help me out.
2007-02-28 13:44:42 · 10 answers · asked by dustborn05 2 in Cars & Transportation ➔ Maintenance & Repairs
Details. How low is low?
If you are dropping below 10 psi at idle hot, you have a problem. You can cover it up with Viscosity index improvers like you find in STP oil treatment and Lucas oil treatment. You will not fix it this way. What you have is either low pump output or, more likely excessive bearing clearence. When this happens it is usually all of the bearings and the crank journals. I can tell you to try the sending unit or some other baloney, but you will just be wasting time and money. If you have worn crank and bearings you just gotta belly up.
If you are staying above 20 you are fine, between 10 and 20....ehhh!
2007-02-28 15:00:58 · answer #1 · answered by Anonymous · 0⤊ 0⤋
how low does the pressure go. its normal for the oil pressure to drop any time you let of the gas, because the pump is not turning as fast, but if it is dropping an insane amount, like from 60 to 10 you probably got a bad pump
2007-02-28 13:51:41 · answer #2 · answered by slowc10 1 · 0⤊ 0⤋
Faulty gage, or sludge in the oil pan. When the engine is cool, clogged oil pump pick-up will suck harder on heavy, viscus oil, and the Gage will show high pressure. Run some crank case cleaner then replace the oil and filter. Luck to you.
2007-02-28 13:54:22 · answer #3 · answered by Boof 3 · 0⤊ 0⤋
i own a repair shop,and it can also be a bad oil sending unit on it,when they get hot they will make the pressure drop like this also,actually the truck oil pressure may be fine the unit may be going out,and that may be causing this to happen,and a bad cat will make it run hot and over heat ,and hesitate a lot,try the sensor,that should help, good luck with it i hope this help,s.
2007-02-28 13:54:31 · answer #4 · answered by dodge man 7 · 1⤊ 1⤋
Make sure that you are using the correct weight oil. Maybe a heavier oil is needed.
2007-02-28 13:52:40 · answer #5 · answered by Rach23 3 · 1⤊ 0⤋
It is not a convertor problem.
Chances are you may have a bad oil pressure sending unit.
2007-02-28 13:59:49 · answer #6 · answered by TonynNC 5 · 1⤊ 0⤋
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2016-12-05 02:12:17 · answer #7 · answered by Anonymous · 0⤊ 0⤋
could be dirty oil filter or oil pump going out
2007-02-28 13:52:39 · answer #8 · answered by Anonymous · 0⤊ 0⤋
maybe your pcv is clogged, if not then check your oil pressure switch, usually located above the oil filter, hope this helps.
2007-02-28 14:54:35 · answer #9 · answered by shefixescars 4 · 0⤊ 2⤋
did you check the sending unit?it could be bad,or you got a bad bearing.
2007-02-28 14:38:39 · answer #10 · answered by Anonymous · 1⤊ 0⤋