Maintenance & Repairs · 8 years ago. Check engine at idle, acceleration decrease? When im parked for 10 mins or more the check engine display comes on, then if i rev the engine, it goes away. Its done that a couple of times, probably would do it all the time if im idle for 10 mins or more, more often.We recently had the drivers side lock replaced however since getting it back we have noticed a ticking or tapping noise coming from the engine. We are both convinced this is a new noise. It only happens when the engine is idle (or its drowned out at higher revs ), I've had a listen and with the boot up it *seems* to be coming from the right ... Ticking This article supersedes TSB 06-4-7 to update the Service Procedure. ISSUE: Some vehicles equipped with a 4.6L 3-valve or 5.4L 3-valve engine may exhibit a ticking and / or knocking noise after reaching normal operating temperature, or a rattle upon starting. The noise may be described as ticks, taps, knocks, or thumps. engine tick at idle. Jump to Latest Follow. The ticking really is not normal, and I think Toyota has decided to do something about it. I'm tired of hearing from you about Tacomas since you don't own one.Ticking/tapping is your valves. A deeper, tuncking noise is your bearings. Bearings usually don't show up at idle but instead under load after warmed. Unless you not on top of your oil changes I doubt this is the problem. Are you using the right viscosity. 0/5W-20? Your about due for a timing belt change. 2007 HONDA PILOT Timing Belt Tensioner Yesterday, I went to the bank to withdraw money from the ATM. At my bank, you have to get out of the car and walk to it. With my car running (warm), I noticed a very clear ticking noise. Just wondered if everyone else (with 2012s, etc) noticed this with theirs. On an off note, the idle seems to be sporadic.