[Mk2] [Turbo] Oil pressure light but had new pump fitted recently

[pandb2]

Hoping someone can give me some advise please

Got a rev2 turbo and the engine has been fine was said to have had the water pump oil pump and cambelt changed before I bought it...everything was going fine got new exhaust fitted plugs filters fluids and then after fitting thermostat as it didn't have one in it
All temp gauge was fine at half way

Running well then on a longish drive at operating temp for a good 20 mins rather than my usual shorter trips on weekends the oil pressure light started flickering luckily already nearly home and then checked it this morning and once started the light stays on so shut it off and here I am

My question is is there anything which can cause low oil pressure or things to check as the pumps ment to have been replaced so hoping it's not that and the other forum posts I've read no one knows of a failed pump ever happening... :/

Could it be the oil filter even though it's genuine toyota or maybe the turbo return line as I fitted a different one as the one on car had touched the downpipe and didn't want to risk it causing a leak etc but the piping is the same diameter and would this cause a pressure issue anyway?

Any pipes which are prone to getting blocked maybe?

Before I got home just after the light flickered on last night the engine top end was tapping abit so hoping it's not caused damage but if that helps anyone advise me as obv no oil pressure getting to the top end I'm guessing?

Any advise or things to try more than welcome!

The turbo has an aftermarket hardline oil intake and return line
If this was blocked or not free flowing the return line I mean would this cause this problem?

Thank you in advance feeling like giving up as proper disheartening as just started getting it running better after having loads of things not being how they should when buying it and getting it home and now this

[pandb2]

Oil level fine but checked oil cap and not sure if it's paint bits from where cam cover was painted into the threaded part of oil cap or if it's metal fragments inside the head😭

[Grazzy]

check for fault codes,

drop your oil if that's your concern. you will know where you stand right away then.

[pandb2]

check for fault codes,

drop your oil if that's your concern. you will know where you stand right away then.

Thanks Grazzy for the post and I will check for codes now

No fault codes showing

[pandb2]

Sensor working as tried another one which I know it good and same thing
Thought at first the other sensor had sorted the light but then it came on again

Think it's eaten something inside but god knows what or why

[Grazzy]

I would drop the oil and swap the filter. see if there is anything in either of them.

[tiff_lee]

How long before you bought the car was the oil pump allegedly changed? how many miles on that pump? was it a pattern or genuine pump?

Not sure how common it is with 3S-GTE's but perhaps oil pressure relief valve stuck open? Would need someone with more experience on these engines to chime in.

[pandb2]

I would drop the oil and swap the filter. see if there is anything in either of them.

Okay mate will do that tomorrow...probs a rebuild but god knows what went wrong
Seller said had no problems for years....

[pandb2]

How long before you bought the car was the oil pump allegedly changed? how many miles on that pump? was it a pattern or genuine pump?

Not sure how common it is with 3S-GTE's but perhaps oil pressure relief valve stuck open? Would need someone with more experience on these engines to chime in.

Said few months before so around 5 or 6 months at most so not many miles
Not sure if pattern or genuine mate sad to say

I read something about this relief valve...where is it and how do I check/change it?

It's the what looks like metal filings which is really worrying but dropping the oil and pan will answer that one😣

[Grazzy]

How long before you bought the car was the oil pump allegedly changed? how many miles on that pump? was it a pattern or genuine pump?

Not sure how common it is with 3S-GTE's but perhaps oil pressure relief valve stuck open? Would need someone with more experience on these engines to chime in.

Almost all of my issues on my mr2's have been on the engine related. not saying this makes me an expert by any means.

if someone thinks they have gotten paint in the engine from painting the rocker cover, how do you be 100% certain without draining the oil and checking the filter?

[tiff_lee]

I read something about this relief valve...where is it and how do I check/change it?

It's the what looks like metal filings which is really worrying but dropping the oil and pan will answer that one😣

Wait what, you have found metal filings somewhere? I just re-read your OP but don't see any mention of that?

I'm not too well versed on these engines but its a small plunger and spring assembly incorporated into the oil pump housing.
I had one jam on a C20LET after a head gasket change, I pressure washed the head after machining went for a quick test drive up the road and back then oil light randomly came on and wouldn't go out. Stripped pump assembly and a piece of swarf had jammed the relief valve, I also removed all the bearing/end caps to check for damage but fortunately there wasn't any.

@Grazzy that seems a bit of a random question is that related to this?
Has the rocker cover been painted on the underside? Well i'm going to assume that it has for now so without dropping the oil and replacing filter erm, remove rocker cover and take a look? remove oil filter cap and have a look see if there is anything suspicious or try and get a rag/finger in there and rub the underside of the cover for any loose paint?

[pandb2]

The paint comment is my wishful thinking it deffo small metal filings

Mayne it was the relief valve but I guess it's not an easy job to just check the valve or is it a cambelt off jobby etc?

Wish had a specialist nearer to me as I'd literally just say fix it please and pay the bill as it's really disheartened me guys spesh with how much I spent

What could have eaten itself to cause the metal though!?

[tiff_lee]

Well the metal filings could be a result of a loss in oil pressure but then what caused the loss in oil pressure....

Either way looks like you'll need to drop the oil and go from there unfortunately.

Don't take my word for it that it's the relief valve i'm just speculating on what we know so far and yea it would be cam belt & crank pulley off.

[pandb2]

Well the metal filings could be a result of a loss in oil pressure but then what caused the loss in oil pressure....

Either way looks like you'll need to drop the oil and go from there unfortunately.

Don't take my word for it that it's the relief valve i'm just speculating on what we know so far and yea it would be cam belt & crank pulley off.

I'll do that tomorrow the oil etx and thanks atleast I know it's not a small job

I'm not sure what to do as don't wanna chuck money at a potentially now slightly or majorly harmed engine yano

Super fml right now

[pandb2]

Update

Pulled pan and strainer bolts that secure to where it pulls the oil up to the oil pump the seller obv didn't tightened these up and overtightened the other
One was snapped and in the pan ffs and the other not tight hence wasn't sealing and lost oil pressure
Metal in bottom of pan
From what part of the engine I don't know
Fuming is an understatement

[tiff_lee]

Crap wtf, so the oil pick pickup pipe/strainer wasn't tight?

Any pictures?

[pandb2]

Crap wtf, so the oil pick pickup pipe/strainer wasn't tight?

Any pictures?

No pics but yes one stud broken and the other wasn't even tight so naturally engine vibration since the work was done has loosened the one which wasn't tight and the other I'm guessing he snapped and left in oil pan!!!!!

[tiff_lee]

Sounds random, don't think i've ever heard of a pickup pipe bolt shearing from vibration even if it were loose but then it's pretty unthinkable that someone would shear it while tightening and then just leave the bolt in the pan for you to find.

So yeah if the pickup has come loose you've sucked in a load of air hence the loss of oil pressure.

Not sure what your options are really, go back to the seller which is easier said then done. At very least if there is metal filings you will want to inspect all the shell bearings and then get that oil pump sheared bolt removed. I can't imagine how someone managed to shear a bolt in a brand new pump they must of been swinging off it.

[pandb2]

Sounds random, don't think i've ever heard of a pickup pipe bolt shearing from vibration even if it were loose but then it's pretty unthinkable that someone would shear it while tightening and then just leave the bolt in the pan for you to find.

So yeah if the pickup has come loose you've sucked in a load of air hence the loss of oil pressure.

Not sure what your options are really, go back to the seller which is easier said then done. At very least if there is metal filings you will want to inspect all the shell bearings and then get that oil pump sheared bolt removed. I can't imagine how someone managed to shear a bolt in a brand new pump they must of been swinging off it.

The sheared bolt is the stud on the pickup not the pump
So gutted as something obv been damaged somewhere

[tiff_lee]

Ah right my mistake, i've not actually had a 3sgte oil pump in my head before i'm just thinking of a vauxhall one with 2 bolts through pickup flange into the oil pump.

If you get some pics showing the filings some of the guys on here may be able to speculate but at the end of the day only way to know for sure is to look.