Question about Chrysler 300C

4 Answers

Hi there my car is chrysler c300 5.7 hemi engine 2005 oil pressure in my car when it first start in the morning is 364 kpa or 48-52 psi then its drop to 165-184 kpa or 20to26 psi is it normal and what is the avarege oil pressure becuse I notes many cars my freinds cars higher than these many thanks

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  • sqwer1111 Sep 09, 2010

    and also there is clicking sound I think valves sleevs cleacking but this sound I hear it in many of my friends cars .

    regarding the oil pressure from 165-184 kpa the engine idel but when I drive it in the road for example 140 km the pressure back to 364

  • sqwer1111 Sep 09, 2010

    first I want to thank alicantecoli for his answer but as he montioned my car C300 (he said-but i cannot help you here because i have never seen this vehicle here in spain so i have no product knowledge of it)
    so, I want a spcialist Mechanic in the chrysler c300 hemi engines please and the Experts should please match my oil pump reading with the chrysler standerd

    thanks

  • sqwer1111 Sep 09, 2010

    thank you very much Mr alicantecoli but as you said you don't have experience in this spceific car the chrysler c300 2005 becuse it is not famuos in spain and with all respect you are talking in general you raised the possibility of the oil pump reading failur but what about the oil pump light failur any way I appreciat your answer but I want a chrysler Expert that mach my oil pump reading with the chrysler standerd

  • sqwer1111 Sep 09, 2010

    so, what shold I do change the oil pump ?

    where is the pressure goes ?

    my engine temp. 95-104

    and oil 5w30

  • sqwer1111 Sep 09, 2010

    if I change the oil pump is it soluation ?



    and what you mean is my oil pump RPM



    if you mean when the RPM goes higher the pressure goes more >>yes



    but as you said my problem when the engine running Idle the valves sleeve sound comes out ...



    and if I raise the RPM in idle a little for prement then I will have hard shifting in the gear

  • sqwer1111 Sep 10, 2010

    first I want to thank you but not only one 2 of my friends the got 5.7 engine



    first one his oil pressure in idle from 37-40 psi

    the second 33-39



    both of them the 2005 and the same oil of mine

  • sqwer1111 Sep 11, 2010

    I have this car since 3 years ago I bouht it used from US and my friends also they got it used import from US the odmeter reading around 80000 mile

  • sqwer1111 Sep 11, 2010

    thank you but what a if I get new oil pump ?

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4 Answers

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  • Master
  • 2,926 Answers

How long have you owned this vehicle? How many miles are on this vehicle? The clicking sound you hear is a normal characteristic of the Hemi engine. Your actually hearing the camshaft/valve train assembly, due to the high lift. No worry's here. As for the oil pressure on start up, 48-52 psi is ok on this vehicle as well as other vehicles, the oil is cold and will create higher pressure. 20-26 psi after wards is normal, this is due to the oil heating up and is not as thick when the engine is first started. There is nothing wrong with your oil pressure.

Posted on Sep 11, 2010

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  • Chrysler Master
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WELL YOUR FRIENDS HAS 3.5 OR 2.7 V6 ENGINES OIL PRESSURE IS 45 - 105 PSI @ 3000 RPM THE 5.7 ENGINE OIL PRESSURE 25 - 110 PSI @3000. YOUR ENGINE IDLE HIGHER IN THE MORNING GET OPERATING TEMPERATURE FASTER THEN IDLES DOWN OIL PRESSURE DROP TO 25 - 30 PSI THAT NORMAL.YOUR FRIENDS HAS V6 ENGINE WHY OIL PRESSURE HIGHER THAN YOURS.

Posted on Sep 10, 2010

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  • Chrysler Master
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Check this previous comments:
I notice the oil pressure when fully warmed up and sitting at an idle reads between 16 to 20lbs. Is that normal presure for the car at idle?

When at highway speed the oil pressure goes up to 45 to 50lbs.

Also the temp. gauge reads 210 degrees at normal highway speeds

Then, 210 is normal with stock thermostat. Few test get 52 psi oil pressure at 70 mph. Not sure about oil pressure at idle as I haven't specifically looked at it, but 16-20 psi sounds normal as well.

All reported numbers are nominal. 200-225 is a normal coolant range. 10-60 is a normal oil pressure range.

All vehicles are subtly different, as well as operated differently under differing conditions. So the numbers var significantly.

Finally, your oil pressure is completely normal too; you only need 6 or 7 psi at idle to keep everything lubricated. As the engine RPM increases, so does the oil pump RPM - so you get more pressure when the engine is running faster, which is when you need it.

Hope helps.

Posted on Sep 09, 2010

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  • Chrysler Master
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Do not worry about it as long as its higher than around 15lbs ,it could be a sender unit reading wrong ,if your worried then put a manual gauge on and check it but the main cause could be just a worn engine and by the time you buy a new oil pump and have the crank reground then it might be cheaper to buy a new motor .Best advice i can give if oil pressure is low is to not to over rev the engine by racing a jag or a porsche ,change the oil every 6000 miles with a oil filter every third oil change ,and stick a tin of STP or wynns in as well ,now on some engines in the oil pump or the filter housing is a oil pressure relief valve and sometimes the spring goes weak ,but i cannot help you here because i have never seen this vehicle here in spain so i have no product knowledge of it .But i think that if you change the oil regular then you will not have a problem ,When i worked in fords many moons ago when the new engines reached the test bed for a quick run they could read anything within the spec and this spec was well ----- so long as the oil light didnt come on it was good enough

Posted on Sep 09, 2010

  • Colin Stickland
    Colin Stickland Sep 10, 2010

    we couldnt afford the road tax or the petrol here for 5.7 litre ,anyway hope you find an answer

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