pornstar68

no matter what gear i am in if i try to speed up while it is lower rpms my engine seems to have a knock and it seems to have lost a little power
got any ideas 2002 trans am ws6 conv. 11k

Gloveperson

iTrader: (9)

Check your fuel filter. Check your ignition componets as well, although with only 11k miles, my bet is on a dirty fuel or air fitler.

You are using the right fuel as well and there is no check engine light on either, correct?

You could always scan for codes as well anyway though.

Martingale

Sounds like detonation...it's common with LS1's. I've found that the most common cause is oil contamination from the PCV system. The LS1's PCV allows way too much oil to slip past the PCV valve and be spit into the intake. It can foul out the plugs, cause carbon buildup, and contaminate the fuel mixture. I'd bet if you pulled your lid (airbox if it's stock) off right now and looked past your throttle body it would be all oily. I'd suggest getting a catch can....AMW makes a great piece for $88. I consider it to be a must have on any LS1. That will literally "catch" any oil that comes through the PCV system. After that I'd change the plugs and it should be good to go. I doubt you have excessive carbon buildup after 11k miles. Other causes of detonation can be a clogged fuel filter, clogged fuel lines, clogged injectors, bad fuel pump or any other malfunction of the fuel delivery system that would cause the car to run lean under load. It can also be from bad gas. You can try going to a different gas station. There's an Exxon around here that makes every car ping that I have ever taken there and that has been about 4 different cars. But I'd bet it's from oil contamination though the PCV...LS1's are horrible with that.

dreammmatt

BP gas has some crap in it for the winter that polymerizes into a sludge and completely f*s the injectors. My mom had been using it and the car developed a knock and loss of power - after switching to another brand gas there were no such problems.

pornstar68

i actually was running unleaded in it but i should be running premium i found outbut would that acount for my loss of power

jaberwaki

never heard of a 2002 needing a catch can...
98 maybe... but not 02...

jaberwaki

you mean you were running 87 in it?

please read your owners manuals people... thats why they make them....

yes 87 is bad for you... run a tank or 2 of the right fuel in it and your trouble should just go away....
and go out and buy your car a nice wax job to say your sorry for feeding her cowpiss....

koolkoreanked

LMAO