Strange Revving This Morning

[Andyn]

Hey all,

I noticed the car was revving higher than morning this morning. I started the car and it idled at 1800revs, which is higher than normal. Then i drove on the highway doing 100 (normally i am in 5th gear revving about 3000revs) and this morning I was in gear 5 doing 100 and it was revving at 4.5k revs. When i put my foot on the gas the revs jumped up quicker than normal.

Something funny is happening. I cleaned out the aac valve and the afm but it still does it.

This happens now and then. THe last time this happened it corrected itself suddenly as i was driving (then from that moment it revved normally). The only thing i can point it to is the mines tuned ecu I have. Any ideas guys?

[Andyn]

Just a thought - could it be the clutch slipping?

[skylinegtts]

yeah sounds like the clutch may be on its way out.

[Andyn]

wonder how this relates to it fixing itself after driving on the highway for a bit?

Hotter = more grip possibly?

[Dobz]

so is the car actually idling at 1800 or does the tacho just read 1800?

it's not physically possible for the engine rpm to go from 3000 to 4500 in the same gear at the same speed thats just crazyness.

it is probably the tacho signal output from the ecu or maybe the tacho itself i'm not exactly sure but it wouldn't be a slipping clutch if the problem happens when the car is idling out of gear aswell.

i'm a bit eyed but it'll do

[Andyn]

actually it may not be the clutch after all, as u said dobz.

I turned her on in the morning, and it was back idling and running normal.

Come to think of it when it was idling at 1.8k, it sounded the same but just said on the tacho 1.8k. Possibly some faulty electronic?