hey guys i got a 94 civic i just put in a 96 dx motor used my dx manifold and stuff and my 94 dx ecu when i punch it it hesitates real bad and then gets real choppy like but when i turn the car off it's stops until i punch it again, if i just ease the throttle its ok doens' t hesitate what do u think it could be ? let me know guys

 

noticed i'm leaning out when i floor it but what coudl cause that ?

 

if your using an OBD1 DX ecu, you should be having IACV problems...because the 96 DX (Y7) motor uses a 3-wire IACV...

You throwing any check engine lights?

 

oh i used my odb 1 ex manifold so the plugs match up

 

Check your tps and map sensor wires. Make sure they are not crossed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackccoupe &raquo;</TD></TR><TR><TD CLASS="quote">oh i used my odb 1 ex manifold so the plugs match up</TD></TR></TABLE>

hah, gee thanks for mentioning this in your original post chief!

check your ignition timing?

 

Im having a very similar problem with a obd0 b16a into an ef that I just built for a customer car.If I ease into the throttle than itll be ok,but if I stomp on the pedal it tries to do.Im thinking it may have something to do with the ignition timing,though the cam timing is dead on.Its not throwing any codes.

 

hmm also i noyiced my voltage drops to like 11 volts too what woudl cause that got an new alt didn't help ?

 

anyone

 

ok guys when i floor my car the a/f reading up all the way to 20 lol it leansout real bad what would cause this any suggestions welcome

 

anyone have any ideas really need to fix this could it be any sensors, i don't get any check engine lightst or nething