Ok so a few months back i bought a 1999 civic hx for my gf. Had the a car a week and the trans took a ****. somebody put atf in the cv trans that was in the car. I looked around for a new trans but could only find a standard 4-speed automatic trans so we installed that in the car.

The issue we have now: Cold start-up the car hesitates shifting into reverse, however it will shift normally through all the other gears. Once it warms up, the car feels doggish, doesnt shift properly, and the D4 light stays lit up no matter which gear you select. It kinda seems to only have 2nd and 4th when it warms up. any ideas?

 

any ideas?

 

try changing the old shift solenoids onto the new trans, or getting some at the junk yard. make sure u check the fluid level with the car OFF. and warm.

 

checked fluids last night while the car was warm and off and it was a bit low. topped it off til it got to the proper level but its still acting up. is there a way to test the shift solenoids?

 

not really. they just fail. they are easy to change. the way to test them is to ground them, and add power to the plug. but sometimes even if they click they still dont open.

 

so which ones usually go bad? isnt there two sets of them on the trans. ?

 

im not sure which one is for the reverse and first. but if i were you i would change both. or interchange them. see if it makes the car only work on first gears.

 

You can't run a regular 4 speed automatic in an HX, they're controlled completely differently than a regular automatic. engine and cabin harness is completely different. Either find another CVT tranny or a 5 speed manual.

 

hes 100 percent right. u need another tranny, or make it 5spd.

 

I changed out the harness for the harness that came out of the 4spd car.

 

Engine harness, cabin harness or both?

 

 

Another gold star first poster!