Got Knock? '93 Park Avenue
#1
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Went out for a drive today out to the boonies <car is really dirty now btw. hope nobody writes wash me in it> and when i got there, i noticed that under acceleration, it sounds like the motor is pinging pretty bad. I was under the impression that these motors had knock sensors, but at any rate, when I got back, I cringed every time I got on the gas, it was pinging so bad. I am running 88 octane in it right now, but will prolly fill it up with shell v-power next time <and get it washed too>.
So i ask this:
Should this motor have knock sensors <N/A motor for the record>
What would cause such a commotion? I suspect the cat converter is in rough shape, but what else? I have already seafoamed the crap out of it about 2 weeks ago.
So i ask this:
Should this motor have knock sensors <N/A motor for the record>
What would cause such a commotion? I suspect the cat converter is in rough shape, but what else? I have already seafoamed the crap out of it about 2 weeks ago.
#2
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It'* an ultra, right? If so, you need to run 91+ in it to avoid the knock you're describing. Willwren just killed one of his engines last year by running lower octane in his car...![Wink](https://www.gmforum.com/gm/images/smilies/icon_wink.gif)
(wasn't his fault, but still...)
If you DON'T have an ultra, don't bother putting in anything but 87 (in your case 88 I guess), or else you're wasting your money...
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(wasn't his fault, but still...)
If you DON'T have an ultra, don't bother putting in anything but 87 (in your case 88 I guess), or else you're wasting your money...
#3
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no, its just a regular, and i know all about the regular vs premium in n/a 3.8 applications. i just heard that these seem to take well to the shell v-power.
#5
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havent checked for that, just trying to create a to do list of stuff the car needs. i will put checking for vacuum leaks on that list also. dry rot is new mexico'* rust
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#7
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Originally Posted by samueljackson
what kind of a knock is it? can you post a vid?
and yes it has a knock sensor.
and yes it has a knock sensor.
#9
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my cell phone can take vids, and the oil seemed fine. I understand your concerns, but let'* assume that it is in fact premature detonation for this remainder of the discussion
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