High idle issue. (1300rpm)

[EvanH]

Just got my car up and running from replacing my head gaskets, and now I have a high idle.

No vac leaks, assuming the 17inHg is good seeing as its the same as I had before the job.

Things I replaced include:
IAC- from rock auto
TPS- adjusted by the maint manual
PTU
CAS- I adjusted it by eye against where the old one was positioned, measured the casing and marked it.
New knock sensor- reads correctly.

At a slight loss...

[EvanH]

Bump.....

[FeaRpb]

Try leaving the battery unplugged for the night. Hook it back up in the morning and see if that fixes it.

[DrGonzo]

Eyeballing the CAS will not work. It needs to be checked and set with a timing light. I tried marking the position before working on my engine. Always had to adjust it afterwards.

[EvanH]

But does the cas have to do with idle?

[DrGonzo]

Increase/decrease timing will lower/raise idle speed.

[EvanH]

Good to know. Thanks. Would an obd I reader be helpful? And would an autozone timing light be acceptable? The kind you can rent?

[DrGonzo]

You can't have anything plugged into the odb1 port when setting the timing or it will switch it over to set the base idle. I have an Autozone timing light and it works just fine.

Refer here to set it correctly: Stealth 316 - Ignition Timing - DOHC

[EvanH]

I mean in general though for the obd reader.

[DrGonzo]

I couldn't say as I have only ever used a logger and MMCD.