What's a "throttle line"??

 

The line that links the throttle body to the pedal. I think evo's are fly-by-wire so you don't have to worry about it.

 

OH, the "Thottle cable" did that fix your problem?

 

If that throttle cable is laying on the valve cover routed incorrectly) it will get melty and hang up.

 

Haven't had the problem at all, just gotta deal with the stupid reflash they did.

 

bump

 

so what happend

 

I'm having the same problem. Mines been acting up for almost 2 weeks now. I'll start it up and it will jump to 2k for about 3 to 4 min then go down to 1k or so. I only drive like 4 miles a day normally and most of the time its at 2k at idle. I have check everything but the spark plugs, which I"m sure need replaced, and have now clue of what the problem is.

 

The RPM jump at start up is completely normal, the car is trying to warm up the cats since they don't work properly when they're cold.

 

Update. I just put in a new set of ngk spark plugs and reset the ecu. I was having the idle jump on cold morning and hot days. It only does it during the cold mornings now. I think I've fixed my problem I was having. The spark plugs where not in bad shape when I took them out, but the electrodes did look somewhat worn and the gap looked to be off. Runs great now and the idle in the mornings goes down after about a min, not 3 or 4 like it did to start with.

 

Sorry for reviving the old thread, but though of open a new thread for discussion and found this symptom which is exactly what i'm having now.

Cold start, car idle high and drop to normal, is normal as i know.
But, engine has warmed, and for example if i'm cruising on around 10mph, and put it to neutral gear, by right the rpm is supposed to drop back to normal idle rpm which is 1k, but mine just stayed at 2k rpm for like 10secs, and slowly comes down to normal. And sometimes while waiting for traffic, it will go up again to 1.5k/2k for 5-10sec and drop down again. It happened even when the AC is on or off, is still the same.

When on a straight position of steering, i turn slightly left/right, the rpm will increase, which i think is normal for an evos, but then i turn it back to straight, the rpm will stay for like 10 sec and goes back down again. Last time it used to be just like 1-3 sec and go back down, now is even longer.

And it also happen when, on a downhill, i just release the foot brake (handbrake is not engaged), without pressing clutch or throttle pedal, no gear engaged, the rpm tend to increase itself, and come back down to normal after sometimes. Last time is like 1-3 sec to normal idle, now it will takes more than 10 sec.


I've read through so many post, and components that is possible for causing this:

1. Throttle body
2. Throttle cable
3. IACV
4. Clutch slipped?
5. Spark plug??
6. o2 sensor
7. CEL? (sorry but what is this?) edited: ok I got it is check engine light lol
8. ISC

 

take your air cleaner off the throttle body and clean the throttle body real good where the butterfly is. it might be your iac valve(idle air control). you can adjust the throttle cable if its too tight at the throttle lever it needs to have a little play not much but it dont need to be tight.

 

Thanks for the reply...I will see what I can do tomorrow. Will definately clean the throttle body, maf, check on the iac..my symptom is something like when the steering is turn and the idle will increase. But even if the steering is untouched, it wil increase itself too. FYI, my power steering is having problem with sound now. Might be air inside and will bleed it tomorrow as well. Hope can solve, god bless

 

do all that and see what happens cant hurt, if you need a power steering pump i got one i can sell but not sure what the cost of shipping would be to malaysia.

 

I little jump in rpms is normal for most any car with power steering if your just turning the wheel sitting still. The power steering pump will put a load on the engine while turning so the ecu compensates by bumping to rpms up a little. It should drop right away though.