corolla revs on starting

Sounds like normal cold start.

My son's 06 Corolla does not rev up when first started.

I think it's much higher revs than normal cold start. And it doesn't do it every time even when completely cold (I'm in Australian summer so it isn't that cold anyway).

Barry

Ray O wrote:

The best thing to do is to take it to the dealership for evaluation. FYI, in automotive terms, a "cold start" is one where the engine has not been run for four hours or so, regardless of the ambient air temperature.

I rang the dealership to book it in and was told by the guy I spoke to that revving was quite normal on cold start - up to 2500 is OK. He seemed quite genuine about it, so I'm just going to keep an eye on the tacho while starting - if it regularly goes above 2500 I'll get on to them again.

Thanks for the advice

Barry

An occasional blip is not a problem, as long as RPM comes back down.

ive seen my revs go as high as 1800rpm for the first 5-10 seconds while the engine stabilises. If the engine is cold (the 4hr+ hours off thing) then it?ll idle at 1300-1400 for about 5-6 minutes and then taper down to 1100 for a further minute before sitting happily on