Lt1 huge problem when warmed up
TECH Regular
Joined: Aug 2007
Posts: 418
Likes: 0
From: Cypress, TX
OK first off this is a 1993 firebird formula the only mods are magnaflow catback and eBay CAI. the problem is when the car fully warms up at around 180ish the car will run like crap and sputter and surge. it never did this befor untill i instaled my CAI i just replaced the opti. new fuel pump new wires and plugs. on first cold start up the car will run fine. this only happens when it is warmed up can somone please help me out here
if it runs fine that way, then pay attention to ALL connections to the air intake and
be sure to use all of them. Do you have an IAT?
Staging Lane
Joined: Mar 2008
Posts: 62
Likes: 0
From: California
sorry to say you may have replaced the plugs and wires and opti but i would always check those again...my truck just did this...everyone was telling me oh you need o2 sensors MAP sensors...but honestly i replaced the plugs and bam problem went away...
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Thread Starter
On The Tree
Joined: May 2007
Posts: 126
Likes: 0
From: Canton Michigan
just replaced the IAT and the MAP and nothing changed still running horible the Rpms keep going up and down! i dunno what to do im stuck! come on theres gotta be somone on here who can help meee
Last edited by 93lt1n00b; Apr 10, 2008 at 02:30 PM.
Are you positive the firing order is correct? My car was running like some dog **** I did a bunch of **** to it and could'nt figure it out. Then I was like hmmm I am going to go over the firing order and I had two wires switched.
Thread Starter
On The Tree
Joined: May 2007
Posts: 126
Likes: 0
From: Canton Michigan
lmfao i guess im gonna try that tomorow i have so much free time on my hands everything im told to try i just go do it haha 2:51 i guess i could try it tonight any other sugestions?
Thread Starter
On The Tree
Joined: May 2007
Posts: 126
Likes: 0
From: Canton Michigan
so i put new wires on and it ran great for like a hour i went inside to wash up come back out take it for a test drive running like **** again??? wtf now the old wires were destroyed
im so confused im done for the night but any suggestions
im so confused im done for the night but any suggestions
