replaced intake manifold.. problems!!!

jmmorgan82 · Sep 5, 2005

got the new manifold on.. no leaks so thats a good thing. now there is a hesitation when i give it gas, sort of a studder. what could be causing this?

kanye west · Sep 5, 2005

what kind of intake? pi?

jmmorgan82 · Sep 5, 2005

non pi

Kilgore Trout · Sep 5, 2005

Have you reset the PCM? Just disconnect the battery for about ten minutes.

kanye west · Sep 5, 2005

ya try disconnecting the battery like kilgore trout said and see what happens. if that doesnt work double check there are no leaks.

streetstang03 · Sep 5, 2005

check all your hoses and vaccum lines.

jmmorgan82 · Sep 5, 2005

reset the pcm, double checked all hoses and vaccum lines..still doing it. plugs only have about 1 or 2k on them, wires are fresh... confused

Kilgore Trout · Sep 5, 2005

It takes some time for the PCM to relearn. Why don't you drive it around a little and see if it gets better. Be sure to turn the a/c on and off both at speed and while idling.

deftsound · Sep 5, 2005

could that manifold be cracked? Did you use gasket sealer on the manifold gasket? Sounds like a vacuum leak of some kind. Im used to fox body mustangs, only had a modular for about 2 weeks so dont flame me if said something dumb, normally id say your distributor wasent hooked up right...

also btw, on the fox's there is a coolant line that runs into the throttle body to keep the throttle body cool. Well one time i didnt seal the throttle body back right when replacing the gasket and it was sucking coolant into the intake manifold and doing that same thing, it would sputter when i gave it gas. I dont know if the modulars have the same thing but make sure you replaced every gasket, never reuse a gasket...

GDawg · Sep 6, 2005

What's the rpms on your curb idle? Did you replace your EGR gasket when you disconnected your EGR? (It's not a bad idea) Check all your vacuum lines for leaks. I replaced my PCV when I did mine. And totally unrelated to a manifold swap but have you replaced your fuel filter lately?

Are you throwing any codes? Did you remove your plugs during the swap? Kept everything clean when your ports were exposed? Didn't use too much RTV when you sealed that leak did you. Definitely do the battery disconnect and run for a couple days to reset everything.

Just throwing everything out there that I can think of.

deftsound · Sep 6, 2005

yea make sure you check the computer for codes

Mike97gt · Sep 6, 2005

these guys covered it all. biggest thing is check for vac leaks. and check for coolant in the plug wells. the coolant likes too make it's way into the wells while you are doing the intake and cause a lot of misfiring and other driveability issues.

jmmorgan82 · Sep 6, 2005

thanks alot fellas! turned out that somehow when i finished putting it together at 2am or so, i didnt plug the cylinder #5 injector connecter or whatever its called all the way in and it wiggled itself loose... im kicking myself in my arse right about now!! runs like a dream now, seems like its better than before. thanks again!

deftsound · Sep 6, 2005

lol glad it runs good

jmmorgan82 · Sep 6, 2005

i probably should start a new thread for this, but what would be some good mods for me to start with?

deftsound · Sep 7, 2005

underdrive pulleys, 65 or 70mm throttle body...

Mike97gt · Sep 7, 2005

jmmorgan82 said:
thanks alot fellas! turned out that somehow when i finished putting it together at 2am or so, i didnt plug the cylinder #5 injector connecter or whatever its called all the way in and it wiggled itself loose... im kicking myself in my arse right about now!! runs like a dream now, seems like its better than before. thanks again!

that will do it. that stuff happens all the time when working on cars.. it really sucks when you forgot a part or forgot too connect something and it's buried and then you have too remove parts too get to it..

i had one where i was doing a tranny and wedged the wirring harness bracket between the engine and bellhousing... that was a lot of fun..

Kilgore Trout · Sep 7, 2005

jmmorgan82 said:
i probably should start a new thread for this, but what would be some good mods for me to start with?

Gears, different CAI. No underdrive pullies

deftsound · Sep 7, 2005

whats wrong with ud pulleys

jmmorgan82 · Sep 7, 2005

i was thinking about getting 3.73 gears, but i drive about 90 miles a day total just to get to work and back. i was thinking of a new upper intake plenum, 75mm tb, cat-back or weld-ins, and down the road gears, p.i. heads and after that i'm lost. why do you say a different CAI?

replaced intake manifold.. problems!!!

New Member

New Member

New Member

Fried or Broiled ?

New Member

unModerator

New Member

Fried or Broiled ?

Please ask me how much my supercharger cost

Please ask me how much my supercharger cost

it doe snot

New Member

Please ask me how much my supercharger cost

New Member

Please ask me how much my supercharger cost

it doe snot

Fried or Broiled ?

Please ask me how much my supercharger cost

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency