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P2646 - low oil, put oil in, but now sputters randomly as if running out of gas. Any ideas?
Country: United StatesMake: HondaModel: CR-VYear: 2005 Already Tried: I gunned the engine to get around a dump truck after a long X XXXXX XXXXX. The check engine light came on and an exclamation light too. The oil light did not come on. I pulled over and checked oil. It was basically empty. I put 2 quarts in and continued driving. Then it started jerking as if running out of gas. I am worried I damaged the engine running it on low fuel... thank you.
Hello welcome to just answer I'm Master Tech and will be able to assist you today.
does the engine have any abnormal noise right now ?
I thought I heard a metallic sound underneath the car but seemed to go away. The car generally doesn't run great in humid weather, just I have never experience the jerking that it is doing. I had been at the beach, filled it with 93 gas from being on empty, drove 170 miles, got behind a dump truck that was losing rocks, passed it quickly (high rpms), check engine light came on, so I pulled to a gas station, put 2 quarts of oil in it. The exclamation light went off but the check engine light stayed on. In the next 10 miles the car jerked twice... I laid off the gas pedal and got home. My research makes me think I should have the
solenoid, the solenoid filter, o-ring, the oil pressure switch, and vtec spool valve checked and maybe just replaced. The metallic sound was unnerving. the car has about 110 K miles on it. The other symptom is before this trip the rpm gauge would go way up like I was revving the car even though I was not revving the car.
ok
ok we see lots of issues with oil consumption and typically the motor will use around 1 qt in a 1000 miles
could low oil cause the jerking even after the levels are brought to normal?
the fact this is got some type of engine mis has me thinking this could have a timing chain issue
well if the timing chain timing changed then it can. but the stumble I would remove the spark plugs and see what they look like
they were replaced a year ago.
the last part of the motor to get oil is the cylinder head.
ok but thats after the issue today or this was replaced as a part of the problem ?
the car had the same oil filter for 5 years.
ok so this motor has very little service history
they replaced the plugs to be on the safe side
probably not the best
well I would do a compression test and also perform the trouble shooting flow chart for the engine code at hand.
no not at all.
what is a compression test?
engine compression I guess.
so this motor is for sure using motor oil and the end result is the timing chains will destroy them selfs and stretch
yes that is correct engine compression.
in addition I would also do a cylinder leak down.
what is the best order of things to be checked?
I see oil pressure switch everywhere.
yes the vtec pressure switch is a pretty common failure
timing belt is very expensive so I have heard.
not sure what the extent of your experience is but this is going to get pretty involved.
this motor does not have a timing belt it uses a timing chain
I guess I just need to get it to the dealer.
any ideas on the metallic sound.
well I would drain the oil and see if their is any particals in the oil
I have a bad feeling this has suffered some mechanical failure of some type.
honestly I think this motor might be in need of replacement. these do not run well on no oil or low oil. the materials used now days simply dont hold up to the abuse.
what is a lifter
I had it towed to a shop and he is going to check the lifter.
he thinks something more is going on too.
anyway....
I guess we could chat all day.
yes but the end result is this needs to be looked at and see what extent of the damage is.
this could be a simple vtec pressure switch or a timing chain or a complete motor.
what is the lifter?
that sounds bad
I can only give you some ideas to check.
lifters are part of the rocker arm assembly
why would he check that?
this is what controls part of the valve opening.
which
the first thing I personally would do is diagnose the engine code you have right now. and then proceed with the repairs as needed.
you mentioned you removed the screen and switch
this just happened yesterday.
so I just found some troubleshooting blogs on this site that mention to try those things
ok so if you have a volt ohm meter I can send you a trouble shooting flow chart that will help you diagnose this problem.
typically the vtec pressure switch is at fault for that code.
that is what I am hoping.
it sounds less expensive than the whole engine being fried.
I was trying to understand if that could cause the sputteringn.
yes the engine is not cheap.
so what would you like to do at this point ?
I guess my question was not clear.
sorry.
if the vtec pressure switch is messed up can it cause a car to sputter
that I have not seen yet but then again we dont see then run out of oil.
normally we see these come through the dealer with the code and the oil level is ok.
well... thanks for the information.
let me get the diagnoses info then you can check this out and it will tell for sure what the issue is.
do you want the testing info ?
sure, I mean... I am a girl.
not a mechanic
I could give it to the mechanic
ok give me a minute please I will load the info
then you can print it out
thats the info you need or your mechanic needs to diagnose this problem.
okay... thanks.
Have a good afternoon
I do ask that you please leave me some positive feedback after you accept
I don't see an accept button on my screen.
I am not sure why you feel my engine is fried.
I really strive to get all positive feedback from all my customers and do my best to provide the best info and repairs possible for not been able to actually look at the car first hand.
well not sure if it is but always the unknown until it's looked at.
let me switch the format.
you dont see the answer or accept button ?
can I rate later?
when I know more?
yes but the rating is based on my working with you and not the site.
most bad ratings have a lot to do with the site issue.
okay... you never said what would cause the metal sound.
the feedback is based on my info givien to you
well this is why i said it needs to be looked at the sound could have been a rod knock or lifter noise
so this is why I was saying to have is checked to see if their is metal particals in the oil pan.
okay... I guess I am upset that my car is messed up.
not your fault.
or was it just a sticking engine lifter due to lack of oil.
yes I think so also and the whole process and me telling you the worst case results just make it worse.
that is just simply out of my control.
okay...
Experience: 26 YEARS of real world experience .
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ok looks like the chat box is acting up again.
so I switched the format to a question and answer.