Yea when i start my car in the morning the idle pulses from 900-2000rpm until it is up to temp, does this have anything to do with the tps adjustment, because i just adjusted them perfectly.

 

Sounds like a vac leak.

 

i believe its your accelereated warm up system. tap the throttle and your idle should stop bouncing

 

na its not the warm up cycle. ive tryed that, it pulses until the temperature gauge is in the middle.

 

i dont think the temp gauge should be at the middle, doesnt it go up to like 3/4? from my experience halfway its running hot

 

the middle of the temp gauge is the correct running temp for all cars, or at least all the cars ive been in, 3/4 of the way is running hot because it is higher than 1/2.

 

ON rx7's half for Fc's is hot. Normal is about 1/4 to 1/3.

 

well my temp gauge reads half way always when the car is warmed up-even when its below freezing out. it never moves from halfway, what can i do to get it to not be halfway?

 

S4 cars: normal operating temperature on stock gauge is about 1/4 to 1/3 from "C"



S5 cars: normal operating temperature on stock gauge is about 1/2 from "C"



you have an 89, so 1/2 way is perfectly normal.



i have seen this "surging" during warmup on my car also. i have noticed that an improperly calibrated TPS and vacuum leaks will worsen this effect.



however it is not an indication of any serious problem, so i wouldn't worry about it too much.



- Aaron

 

yea i kinda figured that, I ran the codes also and there was 17, which is feedback system and it said something about the o2 sesor so i replaced the o2 sensor for 17$, got out my tps tester light's and adjusted them and theres no more pulsing. Car runs a little smoother too, 17$ is nothing, i must of had the original on there.