# Please Help! Civic 1998 1.6L Dx Coupe Automatic Idle issue **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** civic, honda\ **Created:** [August 24, 2018, 3:19am UTC](https://community.cartalk.com/t/please-help-civic-1998-1-6l-dx-coupe-automatic-idle-issue/123561 "2018-08-24T03:19:07Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Morris\_Castillo](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@Morris\_Castillo](https://community.cartalk.com/u/Morris_Castillo)\ **Post date:** [August 24, 2018, 3:19am UTC](https://community.cartalk.com/t/please-help-civic-1998-1-6l-dx-coupe-automatic-idle-issue/123561/1 "2018-08-24T03:19:07Z")
So, I was messing with my car because it had idle issues. It idled fine in the night and idles low in the day. So I changed IACV and tps sensor. Check tps to be calibrated at .50 TB closed and 4.57 open. That’s what my car gave me. I also moved the idle screw to be opened only 2 complete turns. That’s all I did. Went for a test drive and ran the same low idle about 400 rpms to where the engine shakes, in the day. Funny thing was I turned on the ac or hot air at full blast during the day and then car would idle at 700 -800 which is normal rpms/Idle to where it should be. What can be the problem? I’ll appreciate any advice I’m really tired of my car not running well. I was also told by a friend it could be the oil being too thin. I have 5w-30 oil and said it should have 10w-40 or 30. ---
**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\ **Post date:** [August 24, 2018, 11:42am UTC](https://community.cartalk.com/t/please-help-civic-1998-1-6l-dx-coupe-automatic-idle-issue/123561/2 "2018-08-24T11:42:51Z")
@cdaquila, this is a duplicate post. OP has another thread open with responses to the same problem