JJMarley

So i have a 1992 Honda Accord EX automatic. Everything was running fine until a couple days ago while i was driving on the freeway, I noticed a small jerk coming from the engine. All while driving at high speed anywhere from 60mph+.. I started to watch the RPM and noticed it kept jumping about half an RPM then coming back down. Feeling like its trying to shift into 4th gear but its not allowing itself to. Causing a small slippage. Everything in the car is running smoothly. No check engine light. When i drive on just D3 the theres no jerk from the tranny. What could it be? Spark plugs? Please help.Thanks in advance!!!

JJMarley

Anyone? I need help please

Mister R

i am having a few problems with my trans on my 1992 honda accord ex and i have a check engine light on and i m having trouble finding the two prong blue plug where it says its suppose to be i have removed the right side kick panel to find no blue plug so if any one can give me some insight to what im not doing right it would be very helpful

MAD_MIKE

What is 'half an rpm'?

JJMarley

For instance it would fluctuate from 3,000 RPM to roughly 3,400. Back and forth.

MAD_MIKE

It should be above the kick panel, pushed into the wire harness. Trace the wire harness, it should not be buried in the kick panel, but closer to the door jamb.
That is quite a difference. Do you actually feel the engine rev or is it just the tachometer jumping up and down.

JJMarley

Yes i can feel the engine rev. However there's no CEL or blinking D4 light. Other than the reving the car runs smooth. Just don't understand what it could be.

holmesnmanny

It could be the initial stages of the ignition control module starting to go. It relays the tach signal to the cluster.

MAD_MIKE

Pull the TCU and open the cover, look for any burned resistors/capacitors.

JJMarley

I'm going to check it out as soon as it stops raining. Watched a YouTube video and it looks real simple to check. I'm also going to check the ECU.

Hammer90

Could also be the shift control valve. I went the TCU route and it worked for a while then back to shift problems. Had some capacitors / resistors replaced on it. Also you can pull the radio and ECM fuses and put them back in. This may allow it to run smoothly for a while. They are in the engine compartment

Hammer90

btw - I had the same problem with not being able to find the blue plug in the kick panel area either.