I do not know what is up with my car! When i swapped it in it kind of studdered the first couple days but then went away. Ive put in a new fuel filter,wires,plugs,cleaned up the points and the rotor. And i was hoping it would all be fixed when i put in my new o2 sensor today, and it did....for 20 minutes, and then the studdering came back. What happens is, ill be driving around fine for a while(2-10min.) and then the car will not want to accelerate at all(it just studders and bogs down hard), unless im at full throttle, at which point it accelerates fine. WHAT COULD IT BE?!?! im getting angry with my car i dont have a clue what the problem could be. HELP!!!

 

You probably have a ghost inside your car. Did you buy it new???

 

Im new at mechanics but sounds like a fuel problem. Maybe a fuel pump? I don't know...someone please me for being an idiot.

 

oh, 92 vx with 94 b18b swap. WHAT COULD IT BE?!?!

 

Check the fuel pressure. That's a good start.

Shawn

 

ummm. how do i do that? and it doesnt happen all the time(intermittent), goes away after i turn the car off and on or if i coast for a while.

 

anyone else have any advice? im sure someone has had this problem. its bugging the crap out of me.

 

could be a short in the wiring ..does not show when the motor is cold but resurfaces when its hot

 

my car acted like that when we ghetto rigged my distributor coil to get it to start.

When I finally got a new coil and all the wire where connecting it worked fine. No saying its the coil but check the basic ignition stuff too.

Just something to help out


[Modified by civic@uofw, 1:18 PM 9/5/2002]

 

check your grounds and make sure they are all tightened down properly.

 

can you mention all the grounds and their locations? oh, and this might help too. it didnt have a problem for about 1 week after the symptoms disspeared, until it rained(i was delivering pizza in the rain). then my vss crapped out and the studdering started.

 

my car is doing the same as yours i have a 00 Si and i have replaced fuel filter, plugs, wires, cap and rotor, PCV valve and its still studdering. it has been doing this for a while now........ i have a air/fuel gauge as well and it is always running rich as always??

 

oh and its still throwing the o2 CEL after changing the o2 sensor out. its also throwing the vss CEL.


[Modified by blufke, 8:49 AM 9/6/2002]

 

You check the fuel pressure by attatching a pressure gauge between the filter and the engine.

The symptoms you are giving could be just about anything, though. But, you piddled around with the fuel system and the ignition before the problem came back, so I'd look through those systems first. Checking the fuel pressure would be a start, and then you can start with the grounds.

Shawn

 

Until you make these go away, the other things we can tell you might not help. Buy a manual, and figure out if it's REALLY the o2 sensor and VSS, or a wiring problem, or ECU problem.

Shawn

 

how much is a fp gauge? rent one? anyone else have any ideas?


[Modified by blufke, 8:48 PM 9/6/2002]

 

had the exact same shiit when I installed my headers. Turns out that one of the solders going to the relocated O2 sensor had come loose.. Do you have headers? Its definately electrical. with the rain causing it to flare up.

 

B&M Fuel pressure gauge is about $35 i saw in the best buy forum from http://www.titanmotorsports.com

 

Ah-ha! there's the problem! Don't you know cars hate it when you use them to deliver food items?

 

im just wondering what it could be. im thinking it has to be something electrical too. was running fine with no studdering etc until it rained. but i still have the o2 code and vss code. shouldnt have anything to do with the vss though. man. its sooo frustrating.

 

I have the same exact problem with my '90 Teg. Replaced the wires, plugs, fuel filter, pcv valve, and checked timing. Still studders when starting off.

It's funny that you mention "rain," because mine is even worse after it rains. To me, this is an electrical problem where water/condensation is shorting something. My best guess is that it is a sensor.

Unfortunately, I have no fuggin idea where to look next. It has been happening for so long that I have given up trying to figure it out.

 

someones gotta have some help. oh, and where are all the ground? ive counted from valve cover to chassis, and really low gauge wire from little bracket on top of the tranny to the chassis, any other ones?

what should i check since its still throwing the o2 code after changing the o2? its really hard to see much of anything under the intake mani.


[Modified by blufke, 3:27 AM 9/7/2002]

 

alright, tonight i just unplugged the o2 and the CEL now comes on right after i start the car and it hasnt studdered yet, as compared to with it plugged in and the CEL perhaps coming on and it always studdering. where should i go from here?

 

c'mon now. will all the info on the table, someone should be able to help.

 

umm... well maybe i am wrong, but now it sounds even more like a fuel problem, because, when your car thows a cel it goes in to SAFE MODE and then dumps more fuel in to be on the safe side, so it could be another sensor that is causing the problem maybe your maf? not sure, btw have you tried resetting the ECM??