2005 honda civic ex engine light and trans want swift to last ge

Greetings & salutations Robert Avila,

(First question on FIXYA... Welcome).

Your engine surging and what gear you
"DOWN-SHIFT" to ... ought have very little in
common save for one condition (I can think of)...

Your clutch RELEASE is MARGINAL..!!

Check your master/slave clutch cylinders to see
if there is any leakage (fluid might also be low)...

These are not EXPENSIVE and USUALLY fail
in pairs...

If the surging happens with the clutch released... that
is a WORN CLUTCH DISC (replacement time)...

Actuator (slave)
2005 HONDA CIVIC 2 0L L4 Clutch Slave Cylinder RockAuto

2006
http://www.rockauto.com/en/catalog/honda,2006,civic,2.0l+l4,1432766,transmission-manual,clutch+slave+cylinder,2044

Activator + reservoir (Master)
http://www.rockauto.com/en/catalog/honda,2006,civic,2.0l+l4,1432766,transmission-manual,clutch+master+cylinder,1996

Else (not-so-easy (certainly doable))... CLUTCH DISC
http://www.rockauto.com/en/catalog/honda,2006,civic,2.0l+l4,1432766,transmission-manual,clutch+friction+disc,10605

Standard Information...
STOCK (less than $35 (assuming only wear)):
More Information for PACT 99661D

Honda is almost a DELIGHT to work on...
Mechanics manual is a MUST.

MOST IMPORTANT tip of this entry...

NEVER EVER ever let the weight of the transmission
be SUPPORTED by the input shaft...

You will be proud.

Carnac the Magnificent

couple of things to try first , is the trans fluid at correct level ? when was the fluid last replaced ? have the OBD codes read as may tell you what the problem is , if you done all this i'd go to a repar shop for advice

The timing belt is wrapped around the crankshaft and camshaft sprockets in the engine assembly.

From the Owner's Manual: replace the timing belt @ "110k miles or 7 years whichever comes first". We have 73k on our Ex and have had no problems with the automatic ... in fact it is the smoothest shifting auto that I've ever driven. I did a fluid change (incomplete ... u can't drain the entire transaxle) at 60k which is the recommended interval for "severe" service.

syncro in the transmission is going out. do a trans fluid flush with a GM product called Synromesh FM (FM stands for friction moddified gotta have this one) you can get it at GM dealership. worked great on my 95 civic ex

That's because you don't understand how a Honda trans works. Think of it as an automatic manual trans, that is Honda's trans are the only one's where all the gears are constantly meshed. When a Honda trans shifts, it engages that specific gear. All the gears are meshed, a Honda trans engages a clutch pack which gives power through that specific meshed gear, just as you would if you were shifting a manual trans. Now since all the gears are constanly meshed, they are inmersed in trans fluid, If you check it while it is running, It will show less, plus the fact on some Honda models the gears are right next to the dip stick and if your not careful, the dip stick can get pulled into the gears and destroy the trans.

could be trans filter i would have it flused

My 2006 Verona is doing this too. there is a hold button by the gear shift and evidently I had pushed it in and caused it.

1. where is the transmission control module located..............
2. and where is the shift solenoid located....................

blown fuse man..check all fuses even the ones in the engine bay.hope this helps