Hey guys, so the ol d15b2 gave up in my 91 hatch


a friend gave me a d15b7 he had sitting around so i threw that in

i changed over the intake, driver eng mount etc etc

so it runs good but it has a hesitation at lower rpms

if you snap the throttle wide open from a idle it will bog slightly then take off

if your driving the car its a little underpowered at lower rpms, but once you get going its fine

Any suggestions?... the sparks plugs are a little worn out and the cap and rotor might be a little dirty but i wouldent think this would make it run like this

ive checked vaccum lines and nothing seems out of place

any help would be awesome, thanks.

 

try changing the fuel filter and running some fuel injector cleaner...!!!

 

check your ignition timing, also check the cam timing while you are at it

 

sounds just like what my car did, My tps wasnt calibrated properly. The same time we did that we got my check engine light to go away by fixing my intake air temperature sensor. But i dont think the sensor affected it. Im pretty sure it was the tps.

 

does it seem like it bogs under around 3k?