Robinjo

So my engine has had a slight miss only between 70-75 mph in 5th gear. It's only been a little annoying until now that the idle seems rough.

Any ideas?
Plugs look good. Did a full tune-up in the last bit with no effect. Exhaust is sealing fine. O2 replaced in the last year. I'm starting to run out of things to wate money on...... Tune-up and O2 sensor were do anyways, so it's no big loss there.

Robinjo

I should also add this is a 1995 Integra GSR B18c1. No CEL. The miss doesn't happen at othere RPM's. No miss under full load. Only while cruising at 70-75 mph.

fcm

Because it is a common problem and an easy fix check the PGM-FI Main Relay... http://www.tegger.com/hondafaq/mainr...mainrelay.html

Robinjo

I will take a look at it....
Do you just resolder the points or replace the mai relay?

Robinjo

Main relay points all look wet. None of them look dry or cracked...

Any othere ideas?

fcm

I would resolder them anyway, heat them and add just a touch of solder, [60/40 resin core solder], it can't hurt. 94

koss1229

Ignition coil in the distributor overheating on higher rpm?

Robinjo

I cleaned th IAVC and FiTV. They were both really clean.
Still have the same problem...

Robinjo

Any other ideas?
This is miss getting pretty annoying now.....

fcm

Did you resolder the PGM-FI Main Relay connections, if for no other reason then to eliminate it as the problem?

When was the last time the fuel filter was changed?

Is this a problem only at 70-75 MPH in 5th gear or is it also a problem in any other gear, if not, I would check the TPS, maybe swap it out with a known good one. 94

Robinjo

I'm going to re-solder this weekend.
I'll see what I can do about the TPS.....
This is not a problem at any other speed or gear, I'll try at teh same RPM today in 4th on the way to work. It's only at cruising conditions....

MechEng

Check your cap and rotor, I had the same problem. New one solved the issue.

SleepyPanda