I have a daily driver 97 civic dx which has the d16y7 non vtec engine. In the past month i have put in new plugs, wires, cap, rotor, pcv valve, fuel filter, both o2 sensors, coolant flush/thermostat and air filter. When i drive at low speeds such as city driving i am not having any problems. When i get on the interstate or drive at highway speeds, the car losses power(almost a complete loss). When the engine does this it will keep acting like this in every gear even if i go to lower speeds or city driving. If i let the car sit for a while, when i start it back up it acts normal until about 10 minutes after driving as described. The car is not throwing a code or anything so i cannot figure it out. Please give me your input!

 

Any suggestions?

 

Please somebody help me with this!

 

Check voltage going before and after coil, theres a full page on this in the factory manual, I hjad a similar thing and it turned out to be the ICM

ignition contorl module.

 

Thanks ill check that out tomorrow!

 

Is it possible that the pcv valve could cause this problem?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hittnthebz &raquo;</TD></TR><TR><TD CLASS="quote">Is it possible that the pcv valve could cause this problem?</TD></TR></TABLE>

No, a PCV valve will not cause a great power loss issue. A cloggled PCV valve usually causes unstable idle and oil blowing out the main seal. Seems like you have a timing issue. When was the last time you checked your timing, changed out timing belt, and tensioner? A loose tensioner will cause the belt to slip and retard/advance timing significantly.