I bet you can't fix my bogging problem!
 

Alright so here's the deal, nobody at H-T knew how the hell to fix it, but you all are way more intelligent, right?

So what happens is, between 2000-3500 mostly, my car feels boggy and kinda jumpy while accelerating. It isn't just at WOT, could be partial throttle. Idle is 1000-1500 when engine's cold, 700-1000 when warmed, is consistent and seems fine.

I dealt with it for a few months until it got so bad that my car was jerking violently enough for it to be noticeable on the outside. The car doesn't jerk predictably either, it's really random. It was jerking too frequently. :8

I replaced the plugs and it for the most part fixed the problem :6 Well, temporarily... The problem started coming back maybe a week later. Damnit!

Car: 1997 Civic EX D16Y8 Stock 153k miles

What I've tried:
plugs
wires
dizzy cap/rotor
fuel/air filter
ignition coil (grr $80 waste of money)
friend's good tps/map
friend's dizzy (which ended up being ---- and didn't help anyway)
checked timing

What happens:
1000-2000rpm: seems normal...
2000-3500rpm: randomly bogs/jerks
3500+ rpm: seems to be normal, sometimes random misfire feeling, seems weak (maybe because it's a weak engine?)

Seems to be worse when the cars warmed up but does it cold too. Doesn't throw a CEL. Sometimes starts up very sluggishly, especially when warmed. Twice in the past year it's thrown CEL 71 and 72 (random misfire in cylinders 1 and 2) when starting the car.

Maybe running too rich and fouled plugs? Cat clogged? Why would it only misfire cylinders one and two both times? How are pop-tarts made? How would I check these things? Who's my father?

This didn't post correctly the first time, and it was way more detailed, but I hate retyping (?) myself so it's a little shorter.

Thanks for reading!

Re: I bet you can't fix my bogging problem!
 

the info you gave use is useless :1

Re: I bet you can't fix my bogging problem!
 

----, half of the thread disappeared, I'm at work on a shitty computer logged into a remote server, I'll retype in a few minutes...bleh

Re: I bet you can't fix my bogging problem!
 

how's the idle? smooth, proper RPM?

have you checked your ignition timing?

Re: I bet you can't fix my bogging problem!
 

Yes, idles stock (I think), usually 1000-1500 when cold, 700-1000 when warm, is consistent. Checked the timing with a timing gun, everything is right.

I'll add that to the main post.

Re: I bet you can't fix my bogging problem!
 

disconnect the o2 sensor and go for a drive. o2 might be spitting out false readings cause the car to dump and/or cut fuel. disonnecting will put it in a map only mode.

Re: I bet you can't fix my bogging problem!
 

Which one? Thanks

Re: I bet you can't fix my bogging problem!
 

first one (closest to the exhaust ports).

rear one is for Catalyst function i believe.

Re: I bet you can't fix my bogging problem!
 

I unplugged that one before and it sounded different (like it was deeper or ermmmm boggier?) so I didn't drive because didn't know if it was safe. Is that normal?

Re: I bet you can't fix my bogging problem!
 

ya cuz the ecu has no clue what to do w/ afr because thats what the o2 tells it.

Re: I bet you can't fix my bogging problem!
 

lol alright I'll try that out. One more question, how long is it alright to drive without it plugged in? Thanks.

Re: I bet you can't fix my bogging problem!
 

yeah get a different O2 sensor to test with. Also clean your throttle body and you might wanna have an injector cleaning done, or do an injector balance test.

Re: I bet you can't fix my bogging problem!
 

I see you replaced your coil, but did you replace your ignitor too? Maybe the ignitor's about to crap out...used to do that on my obd1 crx every once and a while. Also while you're at it, check your grounds on the water neck, chassis, and valve cover as well. Does it bog and jerk when you hit full throttle? Or part-throttle only? O2 would def. cause problems at part-throttle.

Re: I bet you can't fix my bogging problem!
 

Most noticeable at partial throttle but I think it also occurs at WOT.

Once I get my 450cc injectors and ecu I'm going to put those in, and plan on buying a wideband o2. Before I put the turbo in I was going to replace wires, plugs, rotor, cap, *possibly* ignitor, various engine seals, make a diy catch can, and clean the tb. Maybe after I do all that the problem will be fixed...

Re: I bet you can't fix my bogging problem!
 

I would say 75% of the problem I get through my shop are solved by a complete tune up, the rest have real drivability problems.

Re: I bet you can't fix my bogging problem!
 

And what does a "complete tune-up" consist of?

Re: I bet you can't fix my bogging problem!
 

replace plug(use stock plugs and gap your plug correctly), plug wires, rotor, cap, adjust ignition timing, oil/filter, fuel filter

how did the plugs look, what is your ignition timing. When did the problem start? was it after any repaiting done to the car?

or go to autozone rent a obdII scanner and see how everythign runs

Re: I bet you can't fix my bogging problem!
 

I did replace all those things :P

The plugs looked like normal used plugs. The timing is where it should be, checked with a timing light and jumped the service connector. The problem started soon after I got it. Nothing has been done to the car except driving.

If I rent the OBDII scanner would it tell me anything useful if I'm not throwing any CELs?

Re: I bet you can't fix my bogging problem!
 

I had a similar problem on my old z6 setup. when i put on the msd cap and external coil, the problem went away. I dont know why it happened to my car but once it got more spark it ran great. never had the problem again.

Re: I bet you can't fix my bogging problem!
 

you said it runs better when you put new plugs in it?? Well what do the old plugs look like when you take them out?.. Mine kinda bogged for a while .. was wayy rich.. WOT it would hessitate and bog or kinda missfire.

Re: I bet you can't fix my bogging problem!
 

no. Unless you get a real scan tool like a snap on modis, blue streak BDM, or equlivalent. Those can tell you amazing things

Re: I bet you can't fix my bogging problem!
 

No, it won't. OBD1+ sees it as a lean O2 and you get a stumble at cruise where the ECU tries to richen things up by throwing fuel at the "0 volts" it is getting from the O2.

Re: I bet you can't fix my bogging problem!
 

just wondering why repainting would affect it. not saying your wrongm i just wanna learn.

Re: I bet you can't fix my bogging problem!
 

Yeah taking out the o2 did definately richen things up, you could hear the difference. Didn't want to drive the car like that so plugged it back up. I'll probably wait and see how things go when I get the new injectors, ecu, cat, o2, etc installed, unless someone else has some ideas.

Re: I bet you can't fix my bogging problem!
 

LOL i meant repairing :-[ :P

Re: I bet you can't fix my bogging problem!
 

hahaha