92 Accord Engine High Speed Hesitation Problem

Looking for some advice on a small problem I'm having with a 92 Accord,
automatic transmission with 156K miles. Everything on the engine is
original except for the distributor. Excluding plugs and filters of
course.

When driving on the freeway anywhere between 65 and 75 miles an hour and
at a constant speed, when depressing the accelerator slightly the engine
will start to buck or accelerate roughly. Sorry, it's hard to explain.
If I accelerate faster it doesn't seem to do it. This doesn't happen
all the time either. It doesn't happen at slower speeds or when
accelerating from a stop no matter how hard. Otherwise the car runs
fine. Not burning any oil and my gas mileage is pretty much the same as
the day I got the car.

Any thoughts on what the problem might be?

Thanks

 

Could it be one of your wires grounding out?

 

I am not sure that this will solve your problem but it's worth a try.
Adjust the timing. In addition, add a bottle of fuel system cleaner to a
full tank of gasoline. I'm guessing that the timing or a clogged or
partially clogged injector might be part of the problem. Even if I am
wrong, these two suggestions are not expensive.

 

Thanks for the suggestions. I'll check the timing. I've never done it
on this car but I've done it hundreds of times on others. Come to think
of it the last car I did was a 73 Olds Cutlass. I thought that the
timing was adjusted automatically by the computer.

As for the fuel system cleaner I just put some in right before this
started. It was Techron.

 

I would think it's possible. I take the car in for all of its scheduled
service and when I remember I as ask about the plug wires and they keep
telling me that they don't need replaced unless there is a problem. You
would think there would be a replacement interval on them.

 

Be sure the throttle body is clean. There are also some passage ways in
the air intake area just before the injectors that can be cleaned out.
They are plugged at the factory after casting the part, but the plugs
can be drilled out, and the holes can be taped and small bolts installed
after cleaning.
I doubt the wires are the trouble. They generally show trouble at full
load, like accelerating up hill. bob

 

The EGR plugs are available over the counter at the dealer, for cheap. A
slide hammer works quite well for removal.

 

Did you try to download any codes out of the ECU? What kind of plugs are
you running? I would check them even if they are fairly new.

 

can you describe this process for me? i'm looking at doing this for my
civic and want to know from someone that's done it before.

 

Drill a wee hole almost through the plug, screw in the hammer, bang them
out.
Clean out everything you can see with carb cleaner and small picks/drill
bits, and tap in the new plugs. I used drill bits as a drift to set the new
plugs.

 

This is for CB7 Accords, but yours should be similar.
http://home.comcast.net/~em-engineering/T2T013.pdf

 

wow! totally awesome pdf. don't think that'll work for the civic -
different porting/valve assembly from what i can see, but i'll check
again. thanks steve!

 

Regardless of what they told you--they should be replaced at least after
100,000 miles. Some mechanics replace them after 50,000 miles even if they
appear to be in perfect shape. I have about 62,000 miles on my Accord and
plan to replace them the next time that a tune-up is done.

 

I had the exact same symptoms on an 86 CRX. I always thought it was in the
injection system, since it happened at part throttle, but I could not get
anyone to take it seriously. Never did solve it- finally traded it in on a
94 Acura Integra.

 

Bob,

This is why I brought it up here. I fear that if I take it to the dealer
and try to explain to them what it's doing they'll say ok, keep the car
all day and then say it didn't do it or that they can't find anything
wrong with it.

 

Not yet. I don't have a code scanner if in fact you need one
or know how to get the codes. In fact I don't even know if the dealer
checks for codes while the car is in for scheduled maintenance.

The car has stock plugs in it. NGK. They were replaced at 150K.

 

I wonder what a new set costs. My guess is around $100.

 

Bob, no problems when accelerating up hill. I've been trying to pay
more attention to what's going, looking for patterns I mean. It might be
occurring more when it's warmer out.

 

I know this is OLD, but I was wondering if you ever found out what the
problem was? I am having the same issue with mine. Thanks for your
help/