[QUOTE=Revalot;10983582]
Quote:
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.
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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.