[Tricksta]

They replaced the oil pump again, then had to replace a sensor. They say it is making pressure and ready for pickup this morning some time.

[Tricksta]

Got the car back yesterday. OVERALL it is looking good, but I am now hearing a noise sounding like rattling(Hoping it is just a pulley making noise), and the dealership put a gouge in my driver side skirt from their hoist.. Will be going back Monday to address both issues.

[L78toLT1]

[QUOTE=Revalot;10983582]

Originally Posted by Tricksta

They said the replacement pump was faulty, waiting on parts again, should all be in by tomorrow.

This statement here above is very disheartening , when there is a part failure on the engine, and the replacement part is bad also, it makes you wonder what GM is thinking by bidding on a part from a supplier that has low quality in workmanship.

A 30k-70k car should have a parts good enough for the automobile to be paid for before needing repairs.

I retired from the state of Texas, most states like automotive companies bid on parts/contracts, needless to say the lower price bidders get the job !

Me and my family drive mostly toyota's for every day routines, they cost more, but you can get 3 times the life out of one.

I don't know that the oil pump failures are a result of a quality issue. I suspect the design of the pump is the problem. All seem to fail when the outer race cracks at the pivot point. This point is obviously a stress riser. The area of the cross section in this region does not appear to be adequate.
I'm a mechanical engineer with nearly forty year's experience in aerospace. I have seen quality take the hit for countless design issues over the years.
A good automotive analogy is the Vega, by nearly all accounts a total p.o.s. People squealed about the poor quality. While quality may have played a role, a Vega assembled from parts that were all dead nuts to their respective engineering nominal configuration i.e. 'perfect' quality, would still be a piece of crap.
If quality were to blame for pump failures, gm would beat up on the supplier. Since they're continually rolling the part number, they are apparently tweaking the part design.

[GunMetalGrey]

Add me to the list of failed oil pumps!
I'm trying to get the dealership to convince me that all of the broken fragmented metal pieces from the oil pump are accounted for.

Ordered a new pump from Katech so it doesn’t fail while on the track.
https://shop.katechengines.com/produ...sump-oil-pump/

[ZX-10R]

Originally Posted by GunMetalGrey

I'm trying to get the dealership to convince me that all of the broken fragmented metal pieces from the oil pump are accounted for.

Haha

You're asking dumb people to play God. It doesn't work.

[GunMetalGrey]

Originally Posted by ZX-10R

Haha

You're asking dumb people to play God. It doesn't work.

So in order words I should be demanding a new engine.

[SSallday]

Originally Posted by Tricksta

Got the car back yesterday. OVERALL it is looking good, but I am now hearing a noise sounding like rattling(Hoping it is just a pulley making noise), and the dealership put a gouge in my driver side skirt from their hoist.. Will be going back Monday to address both issues.

Damn it never ends. If you call up GM and complain they might give you an accessory voucher. I received a $500 voucher after complaining about my supercharger. It’s the least they could do.

[pauly1119]

Originally Posted by GunMetalGrey

Add me to the list of failed oil pumps!
I'm trying to get the dealership to convince me that all of the broken fragmented metal pieces from the oil pump are accounted for.

Ordered a new pump from Katech so it doesn’t fail while on the track.
https://shop.katechengines.com/produ...sump-oil-pump/

Attachment 1064864

What’s your production date?

[GunMetalGrey]

Originally Posted by pauly1119

What’s your production date?

Not sure exactly, it's in the shop right now so can't find VIN, received the car May/June 2018

[Akura]

Originally Posted by GunMetalGrey

Not sure exactly, it's in the shop right now so can't find VIN, received the car May/June 2018

Symptons before the fail?

[collinms]

Originally Posted by Akura

Symptons before the fail?

Your oil pressure will drop to around 19 at hot idle. Mine was doing that for about a month before it happened. Some people say that they saw their oil pressure go full max on the guage at full throttle as well.

[GunMetalGrey]

Originally Posted by ZX-10R

Haha

You're asking dumb people to play God. It doesn't work.

The dealership told me that as soon as the pump fails there is no sucking or pushing and therefore no metal fragments should have left the pump... they also say there is a screen after the pump that prevents any significant sized metal pieces from making it by. They checked the oil pan for any signs of metal and found nothing.

[GunMetalGrey]

Originally Posted by Akura

Symptons before the fail?

Check engine light went off and it said "reduced power mode" then about 30 seconds later it said "low oil pressure shut off engine"

I did not check the oil pressure when the check engine light went off and it said "reduced power mode".

[SFV1LE]

Originally Posted by GunMetalGrey

So in order words I should be demanding a new engine.

The oil goes from the pump through the crank, and straight into your main and rod bearings. I hate to say it but I don't see how fragments like this don't do some damage, and other mfrs would have recalled all ZL1s from the defective pump period (there aren't that many) and replaced the pumps.

They owe all "non-failed pump" affected owners a preventative pump replacement, and all owners who had a failure a 1) new motor or at least 2) full top-to-bottom engine inspection, oil system flush, new oil cooler, lines, etc. and bearings replacement including cam bearings and, new crank or cam if needed.

Probably stuff I'm missing, I'm not an expert that's my .02