Hey all, sorry if this has already been a topic, i searched and i couldnt find anything too similar... heres my question.

On startup my 98 sedan runs at about 2000 or 2500(is that right??)rpms. Turn on the AC or heater and it goes down a bit, drive it and it goes down a bit as well. When im stopped at lights it shakes like a paint shaker until i hit the gas to get going again. Seems a little sluggish as of late too. Now im not mechanically inclined but i do know a thing or two about maintenance so i checked the following:

Radiator fluid:a bit low, but i fixed that.
Oil: totally fine (but about 100 miles away from oil change)
Air filter:kinda dusty, beat it out.
Visual test of hoses: looked good, no cracks

It hasnt had a check engine light so no codes for you all. Oh another thing, it seems to run better in cooler weather. I keep an eye on the dash heatometer(i know that not the right term lol) and it stays below the half mark but my town gets to be about 100 degrees for the summer so i want to catch it now while its still kinda cool outside

Now after i did the previous things it started to run slightly better after driving it around town a bit. Im due for a tune up but before i do that i wanted to get some input. Any ideas?

-Amberli

 

Probably Idle Air Control Valve. Search for "IACV" for a guide to clean it. They will gum up and not spring back properly, mine did. Always clean it first, as the replacement cost is around $220 or so.

 

Thank you! I will try that first Probably should still get that tune up though.