Odd because I don't know exactly what it is...

Here's the scenario... The car at times stumbles at take-off, has been doing it for a while but seems to be getting worse. Well now it's stumbling a little off and on in other gears while driving. Nothing consistent, happens every so often.

Car is a 94 with some mild bolt-on's, new plugs, new wires, new coil, original opti, I believe. I picked the car up with 70k, now has 112k, so I am not sure if the opti was changed before that, but didn't appear to have been. I am thinking either the opti taking a dump, bad injector(s), or fuel filter? What's weird is it's not consistent, and when it stutters I give it more throttle and it smooths out.

Does anyone have a how-to for changing the fuel filter? I am going to start with that tomorrow.

 

filter is easy couple wrenches unscrew the lines
put arrow on filter pointing to front of car
the miss could be any of those you listed probly opti

 

Thats exactly how mine was. Right before the opti died.

 

A faulty EGR valve and/or EGR solenoid could exhibit that. Or a vacuum leak of any sort.

I have had to replace my EGR Valve once already and I don't think it's uncommon for them to go on our cars. I think my 96 had 40K on it when I replaced it.

 

Wouldn't this throw an SES?

 

That happened to mine...changed EVERYTHING that it COULD have been and finally just had it diagnosed and it was my opti. I am in the process of fixing it, and converting it to a vented opti too....

 

Not always and even less likely on an OBD-I car like your 1994.

 

Not always and even less likely on an OBD-I car like your 1994.