Hesitation at 4k and over when warm

[andys320]

I had similar issue earlier this year when abroad, car would run and rev, but hesitated almost like a misfire at around 4000rpm.

Indie diagnosed as failing MAF and durametric showed a number of fuelling issues, new MAF all sorted.

Suggest codes read by someone knowledgeable, I had thought coils but he diagnosed over phone and was spot on!

Get codes read, don't really on my experience, mind you mines Ocean Blue Metallic too so it must be that (sic).

[Jojo]

So a bad or dirty MAF could work fine on a cold engine and give wrong readings when engine is warm? Resulting to the symptoms that I have and also what you have experienced??

[Topless]

On my 98 it was the MAF. When the engine is cold it runs on fixed fuel trims and once warm it switches over to sensor driven trims. Failed MAF sensor = poor performance