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03-27-2012
my engine started to knock after comming from work at first it was loosing power the rpms would go up and it would int advance at a stop the engine died I started and it kept knocking I check the oil because when I would press on the gas and on the dic it would read low oil pressure. I removed the belt and the knock its still there and the higher the rpm the louder it gets need help
03-27-2012
Motor is done for.
You most likely spun a rod bearing.
Time to find a used motor and swap it in.
03-27-2012
how can I find out I spun a bearing? how does is it look if I remove the oil pan?
03-27-2012
What year and model?
Louis
GM Customer Service
03-27-2012
bad.
You'll see which connecting rod spun the bearing and ground up the crankshaft.
Metal flakes will be in the oil. Like glitter.
03-27-2012
its a 2004 grand prix, I don't really se the oil like with metal flakes
03-27-2012
Yeah that may be.
But you had said, the motor was knocking, it shut off on you. You cranked it over and it was still knocking. Low oil pressure light came on, took the belt off and still knocking. The higher the RPM's the louder the knock is.
All that leads me to say the motor is toast and it spun a bearing or two.
Time to look for a new used one.
03-27-2012
thanks for your advise I guess I'm gonna start looking for new engine might as well look for a supercharged one
03-27-2012
would if it be cheaper if i only fix the bearings or is not worth it?
03-27-2012
I wouldnt.
Unless you have a way to tune everything. You'll need a computer and tuner to make the engine work with the transmssion.
Plus alot of other small thing.
Swap is not as simple as it sounds.
I'd just find another L26
03-27-2012
You would need a whole rebuild, new crank, rod bearings, motor work have to be completely gone over to make things work, more money that its worth.Originally Posted by crazybrownklick
03-27-2012
I had rod knock on mine as well...actually a broken connecting rod. A spun bearing will require machine work. Probably not worth it. Check car-part.com for a used engine. I just picked up a used 2006 engine with 103K for $350 from a local salvage business.
03-27-2012
It would cost more to fix it. But you would need the crank polished smooth, rod cap too. Oversized bearing. Then the engine majorly flushed to get any tiny flakes out.
My old car I spun a bearing (mazda3) dropped the pan replaced all rod bearings and drove it for thousands of miles until I let it get taken away. It still knocked so I couldnt go over 3k and I ran that lucas slick50 or w/e that thick slimy crap is.
03-27-2012
Louis, guess what?
Doesn't matter.
Anything from '95~ until 2009 works. Series II and III are virtually the same minus compression ratios.
This is the deal right here.
03-27-2012
is there anywhere I could get my computer tuned for the motor swap because they said they had here on a local junk yard a engine of a 2006 grand prix gt supercharged and they with 79k miles and 3 months of warranty would let it go for 450 I would only need the fuel rails. and I think it would be a big upgrade and yeah rebuilding my engine ain't worth it
03-27-2012
you need the engine wire harness, and the pcm from that donor car/engine.
03-27-2012
is there a thread about swapping engines that would really help or is it easier to just to swap and engine?
03-27-2012
top swap I meant
03-27-2012
Not worth the hassle.
Too much extra work to deal with.
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