I have heard that quad 4-motors 2.3 L 16 valve - is a risk/danger motor
because it's oil pressure often are
going to oscillate and then fall to zero and the motor crash/died with big
damage. I have hear that the gear wheel on the oilpump is made oc plastic
material and thats cog are distroyed. Or are there any other ground to this.
What should be done for prevent this?
I had an '88 Grand Am with the 2.3l quad 4 in it. Although the motor was
still running at 250k miles, you should plan on replacing the head gasket
and/or cylinder head about every 60-80k miles. Other than that, no out of
the ordinary problems and no oil pump failure in 250k miles.
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I have a 1990 Pontiac Grand-Am with a 16 Valve High Output Quad 4 5 spd.
Although the car only has 100k miles, I have no complaints about it, but the
head gasket was once changed at 35k miles. I intend to drive my car for a
few more years.
90 Grand-Am SE Quad-4 HO
89 Corvette 5.7 Tuned Port Injection
I had a 95 Grand Am with the Quad 4. Excatly what you posted happened to
me. The oil pressure dropped all of a sudden and it seemed sluggish. By the
time I could get it back to a garage there was a loud knocking/grinding
noise, and that was it, the engine had to be rebuilt. Also those engines are
famous for overheating issues. Never let that engine get anywhere near the
red. All it takes is one overheat on those and you will be in for a lifetime
of problems. I will never go back to the quad ever again. Just my opinion.
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