I am trying to figure out my brothers 88 Prelude Si that's having some issues when accelerating. Occasionally, the car will start to hesitate when driving normally. It feels like it loses some power for a quick second. There are no idle issues. No CEL. It drives perfectly otherwise.

This is what I've replaced/cleaned recently: Car has 206k original motor

1) Both o2 sensors (NGK)
2) Cap and rotor
3) Seafoamed car
4) Cleaned IACV
5) Cleaned throttle body
6) Changed oil
7) Spark plugs replaced 6 months ago

Anyone have any input on this? I would greatly appreciate it!

 

www.p r e l u d e p o w e r.com(no spaces)

You will get more responses and much more support there for the 88-91 ludes.

 

Check TPS and engine grounds on thermostat housing,

 

Thanks! There was alot of info for 3rd gens there. Now, the fun begins with the trial and error. :/

 

Will check these! Thanks