Strange sound after oil change

Got my oil changed last week now I get a random rattle or ticking sound coming from under the hood. Seems to only happen below 40mph when I speed up it goes away and doesn't come back for awhile. Any ideas on what it could be? It's hot where I live could it be the fan kicking on. I love how I have no problems until I take it for service. Any inputs would be appreciated.

 

It could be pinging. Check out this thread.

http://www.tacomaworld.com/forum/2n...14-feedback-engine-ecm-reprogram-pinging.html

The strange thing is that this has happened to several members (including me) right after an oil change. Does it sound like a mason jar full of marbles getting shook around? Does it only happen at low rpm's under light load? Usually when it's hot out and the AC is on....

 

Check to see if they left a drip can under the oil filter.

 

It does seem to be happening around 1500 RPM and it has been hot lately, first problem I have ever had with my taco aside from those weak ass leaf springs

 

Do what Lex said then look into the tsb if you don't find anything under your oil filter. I had the TSB done a week ago and am very happy with the results.

 

same thing happening to me...will play the waiting game..