[415roushJAYR]

like a while back (3 weeks ago) i installed my new intake manifold with a bigger throttle body. anyways... when im taking off on first my car (exhaust sounds fluttering) flutters at the beginning. then switch to second and still hear it flutter a little bit. what is it? ok now im on the freeway knowing there something wrong with my baby. so i check all gears and dam...it feels like there no power.....then the power comes. weird. then in fifth gear the service engine soon light comes on blinking... im like "&*#$!!!!!!!" start slowing down to my exit and it goes away! what is this??? fuel problem? intake leak? please please dont let it be a rod knock!!!!!! thanks bros!!!

[tripleblack]

You might be leaking, no lie, re-visit the install and all the vacuum lines and such, EGR, etc. Spraying air or carb cleaner around the likely leaks will either show the leak or the idle will change, indicating a leak.

MAF could be oily or damaged (they are delicate - drop them and they can go squirrely, or die).

You might also be running lean. Are you getting detonation?

IAC could be dirty, and the new parts just a coincidence...

WHICH new intake did you buy? Are you talking about the upper intake plenum or a whole new intake?

[415roushJAYR]

bro i took it to my mechanics and they read the code. #4 was mis-firing. the coil pack was messed up. and my spark plugs were old. got them replaced and the coil pack and its all good now!!

was asking my mechanics if theres a better coild pack like garantelis and they said thats garbage! anyone ever heard of this coil pack? thanks bros!!

by the way my techs are in colma close to san francisco! the shop is called DITTOS MOTORS!!! best tuner shop!

[tripleblack]

Pulling codes is always step one with these kinds of problems. Keep an eye on your coil packs, once they reach a certain age and one goes, there's a good chance others will follow.

I agree about sticking with Ford coils - the Granatellis are not worth the money, and I've heard some problems about them.

Cudos to your shop. There are some good shops out there, though they are hard to find.

Originally Posted by 415roushJAYR

bro i took it to my mechanics and they read the code. #4 was mis-firing. the coil pack was messed up. and my spark plugs were old. got them replaced and the coil pack and its all good now!!

was asking my mechanics if theres a better coild pack like garantelis and they said thats garbage! anyone ever heard of this coil pack? thanks bros!!

by the way my techs are in colma close to san francisco! the shop is called DITTOS MOTORS!!! best tuner shop!