revtime
08-03-2004, 01:01 AM
We just purchased a 95 firebird 3.4 and finally got it running today (had to have a locksmith fix the ignition lock cylinder) while driving the car if you give it throttle halfway decently it will stumble a bit and then smooth out. Ignition has been done and I am going to throw my scanner on it tomorrow, I think its the TPS but I have not messed with these cars just my 94 Z and was wondering if there is anything that might be wierd about the sixes I might be missing?
atl2001
08-03-2004, 01:25 AM
i know its time for a spark plug/wire change when i get a slight hessitation at 3K RPM..
revtime
08-03-2004, 01:48 AM
I need to check and be sure but the previous owner just installed new plugs and wires and swapped coil packs with another car to rule out those. It has a new fuel filter as well ( I saw it when checking the car over so I know its new) maybe just maybe the wires are bad or not totally on all the way, I will make sure tomorrow.
joed4640
08-03-2004, 11:46 AM
any reason in particular you got rid of your LT1 and got 3.4??
-just curious
oh BTW the TPS usually give the most trouble at idle in park or Nuetral- to diagnoise it w/o a voltometor (sp) simply unplug it and see what happens
camaros_4_lfe
08-03-2004, 12:41 PM
sounds like it may be the tps
or more or less a fuel or ignition prob but tps is easiest to check
revtime
08-03-2004, 06:28 PM
Still have the LT1. The firebird is for my girlfriend.
revtime
08-03-2004, 10:08 PM
Well I put my scanner on it and everything seems to be reading correct except it says quad driver 1 and 4 are bad. :confused: not sure what that means.
It also drives fine when cold but when it hits operating temp it starts stumbling and hesitating under load, you give it a good bit of gas and it will stumble a bit and then smooth out.
Maybe ICM? I will try to get that out next and check it.
revtime
08-04-2004, 12:16 AM
Ok, went back to the basics and I am sure this is the problem.
2 burnt wires.
I was assuming they were ok since they had been changed but I should have known better.
Putting new wires on tomorrow.
revtime
08-05-2004, 02:28 AM
:lol:
Yep, put new wires in and routed them away from the EGR valve (which is what was doing the damage) and it runs perfect.
Thanks for the help guys. :cool: