Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance loss of low end power

my SVT has lost alot of low end power.... it sounds alot like a old v-8 that needs to be choked. but after about 3 grand it pulls like mad. so i think its just running lean. i have done a few mods... 2.5inch truebendz exh. bat Y-pipe, underdrive pully, true rev intake... is this enought to make it run lean or should i be looking for a different problem? and oh yeah my clutch is bad... just another thing you should know about, but i don't think thats a factor

thanks
Kuz

I think it's your secondaries. Usually it's the other way around: no power on the high end. Somehow yours are stuck open.

http://www.contour.org/FAQ/FAQ.php?s=probs&displayid=27

If you haven't done it lately, you should clean the throttle body, do an intake manifold cleaning (using chemicals through the intake without removing the intake manifold), and add a bottle of high quality injector cleaner to the fuel tank.

I do the throttle body and injector clean at least every 15,000 miles and the intake manifold cleaning about every 30,000 miles. It ALWAYS makes a very noticable difference in how the car runs.

This might solve your problem and really should be done as maintenance anyway.

i had the lim uim off not more that 5000 miles ago and cleaned it.... my battery what unpluged the entire time i was installing my exhaust.... i havn't run any injector cleaner in a while i will try that... but anywho my clutch just let go so this is going on the back burner

Kuz