i have 1990 crx dx. it has the dpfi. just recently ive been having a major problem with it stuttering and its annoying the hell out of me.

it stutters real bad from 0-25mph only. and it only does it when the engine is warmed up. it drives great with no stuttering at all when the car is first started and the engine is cold. im really stumped on this one. i just cant figure out what would do this only when the car is warmed up, especially since ive replaced many things on it.

this is what has been replaced recently:
-headgasket set
-fuel filter
-primary injector
-spark plugs
-dizzy cap
-coil and ignitor tested good
-spark plug wires tested good, they are the oem ones from my d15b7
-intake
-o2 sensor
-iat sensor
-fast idle thermo valve
-thermostat
-valve stem seals
-compression tested good

ill think of more later...

it also burns oil like crazy. it has since the day i got it, even after all that mentioned above. i think the only thing left that could be causing it to burn oil is the oil rings maybe? but it doesnt bother me to have to add oil every week, its this stuttering that has got me going crazy. thanks for any help!

 

ok timing got a little off so i reset it and it helped some but its still stuttering.

 

Having same problem a few topics down.I think its the coil or the ecu,replacing coil today will let you know if that helps

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blockhondab18c5 &raquo;</TD></TR><TR><TD CLASS="quote">Having same problem a few topics down.I think its the coil or the ecu,replacing coil today will let you know if that helps</TD></TR></TABLE>

i already tried that...maybe my timing belt skipped a tooth.. i know it was put on right i always triple check that ****.

if it skipped a tooth, that would explain why my timing was off.

i dont know though i had a car before that was off by one tooth and it hardly ran.

 

back from the dead and looking for some help.

checked timing belt it didnt skip any teeth. the ignition timing was off a little bit, i dont know how it got off but i fixed her up and it helped out some but it still stutters, just not as bad as before.

 

Timing doesn't make sense, since it only happens when it's warmed up. Maybe check your O2 sensor since it is bypassed when you start up until the engine reaches operating temp.

 

yeah check and replaace o2 sensor. And please keep us updated

 

if you have read the first post you will see that i have already replaced the o2 sensor.

 

Sorry my bad


Bad coil?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by badboyr66 &raquo;</TD></TR><TR><TD CLASS="quote">Sorry my bad


Bad coil? </TD></TR></TABLE>

if you have read the first post you will see that i have already checked the coil and ignitor.

 

Can I have a hug?

I am having the same problem with my converted dual piont. I myself am gonna swap to a entire multi point harness. But tthis does not apply to you since you are still dual. i am real intrested to see what is going on with yours

 

You ever get this sorted out? I am still at a loss. Mine does the exact same thing

 

I found these I am sure you did too
https://honda-tech.com/zerothread?id=1211307
https://honda-tech.com/zerothread?id=1061263


It is weird dthat there are so many threads son this under search, but all that are the same as min ehave never been fixed

 

i fixed mine. it was the timing and one of the spark plugs.

 

I will double check my timing when i get a chance

 

If your car is stuttering you should probably get it some time with a speech therapist.