My car has issues, and I don't know what to do about them. When my car is rolling in neutral it idles about 500rpm higher than when it is stoped, so that is about 2000rpm. When I am on the highway in 5th gear I am at about 4500 rpm doing 75 mph. Is this normal? I get terrible gas mileage and I was wondering if my high idling/reving engine wsa the blame.

 

do a maintence step like 15k service
you have an SI, its tranny is extremely close geared
the tach is off also...but its suppose to be in the ballpark.

 

4500 @ 75 seems about right. Remember B16's
were meant to rev.

 

ok the rolling-neutral idle thing can vary. So you're saying your car idles at 1500rpm when your car is parked-neutral? if so, that's too high. Try tightening the throttle adjustment screw on the throttlebody. It should be idling under 1000rpm, around 700-750rpm to be exact...

The 75mph@4500rpm is normal, thanks to the tiiite gear ratio a B16A tranny has.

 

u should be @ 80 in 5th gear @ 4500rpm...not 75mph.

 

Mine is 4800rpm? or so at 80mph in 5th. S1 tranny.