Idle question (CAS)

[RocCitySlayer]

A few months back I was trying to adjust my idle. I got the car to idle at a steady 1000rpms but the CAS was as far clockwise as it could go. My wideband reads a steady 14.2-14.9 when fully warmed up and starts up strong everytime. Now im just wondering what could cause the CAS to be adjusted so far all with the car idling so good? Can it be normal or is it a sign that something is really off?

 

[spyderdrifter]

My thought is since the CAS offers adjustable ignition timing, perhaps the engine timing is slightly off and the CAS is compensating. Now I don't mean like off a tooth or something wrong like that, but if the timing belt is a little "seasoned", and has stretched a little like they all will, or the gap between the hydraulic tensioner and the tensioner pulley arm has increased due to age, the CAS would adjust to compensate.

 

[RocCitySlayer]

My thought is since the CAS offers adjustable ignition timing, perhaps the engine timing is slightly off and the CAS is compensating. Now I don't mean like off a tooth or something wrong like that, but if the timing belt is a little "seasoned", and has stretched a little like they all will, or the gap between the hydraulic tensioner and the tensioner pulley arm has increased due to age, the CAS would adjust to compensate.

Correct me if I'm wrong but I thought the 2gs had set timing (unadjustable)?

 

[1G Eclipse94928]

Correct me if I'm wrong but I thought the 2gs had set timing (unadjustable)?

The belt can stretch still.
Maybe the cas is in 180Degrees off? I have heard thats a problem for some people.
Set timing? your timing table adjusts from -X to 35 depending on load, and rpm. In dsmlink you can change the whole table.

 

[RocCitySlayer]

The belt can stretch still.
Maybe the cas is in 180Degrees off? I have heard thats a problem for some people.
Set timing? your timing table adjusts from -X to 35 depending on load, and rpm. In dsmlink you can change the whole table.

Oh ok and sorry I meant set base timing

 

[spyderdrifter]

Yes a 2G has non-adjustable timing. Unless you have a 6 bolt swap such as myself, then it would require the CAS from a 1G to have the ignition timing, fuel timing, and spark timing work properly together. Which engine is in your car? That knowledge will help out.

 

[RocCitySlayer]

Yes a 2G has non-adjustable timing. Unless you have a 6 bolt swap such as myself, then it would require the CAS from a 1G to have the ignition timing, fuel timing, and spark timing work properly together. Which engine is in your car? That knowledge will help out.

Its the 7bolt with 1g head, 1g trottlebody, 1g intake manifold 272 cams. Other mods in profile

 

[spyderdrifter]

Since you have a 1G head, do you have a 1G CAS too, or did you adapt the '95 cam sensor to the 1G head?

 

[RocCitySlayer]

Since you have a 1G head, do you have a 1G CAS too, or did you adapt the '95 cam sensor to the 1G head?

I think so but Im not really sure, Iv had the car running good back in '12 but after some issues with the turbo everything just started going wrong.

 

[spyderdrifter]

Could you post up a picture of your engine? Will be able to tell from that.

 

[RocCitySlayer]

hopefully you can see it enough to tell

http://www.dsmtuners.com/gallery/showimage.php?i=124718&catid=member&imageuser=133439

 

[spyderdrifter]

Yep, 6 out got a 1G CAS. It's the round piece on the left rear corner of your engine behind the radiator cap/water neck.


Also, where is your BOV vac line hooked into?

 

[RocCitySlayer]

Yep, 6 out got a 1G CAS. It's the round piece on the left rear corner of your engine behind the radiator cap/water neck.

Yea I know where it is
I know how to adjust it and everything. I just wasn't sure why It would be adjusted so far and the car still idle steady
The bov vac is t-fitted to the MBC-Turbo

 

[spyderdrifter]

Have you had a timing belt change since owning the car?

 

[RocCitySlayer]

Have you had a timing belt change since owning the car?

I haven't no. Im not sure how old it is but I no longer have a place to replace it so I haven't done it

 

[spyderdrifter]

I'm willing to bet it's stretched enough then to have the CAS adjust that far. When you do get around to it, just be sure to replace the tensioner along with it Save yourself the headache of not replacing them together.

 

[RocCitySlayer]

I'm willing to bet it's stretched enough then to have the CAS adjust that far. When you do get around to it, just be sure to replace the tensioner along with it Save yourself the headache of not replacing them together.

Ok cool. Thanks for the help bro

 

[spyderdrifter]

No problem. Let us know if you need more

 

[RocCitySlayer]

So I ran my car yesterday and I took a short idle log. Did touch anything mechanical. My Wideband read 14.2-14.9 on this log. The car idled and sounded really good. The cas is still turned all the way clockwise thought. Heres the log, Also I realize the Isc its logging 0. My Tps is .61 I do know it should be .63. My rear o2 sensor volts seem pretty high, that also where I put the wideband as. Does this look Bad, good or needs messing with? Also What is the ideal voltage the altenator should produce at idle? Fresh 93octane, Fpr at 43psi or so,No boost leaks, still haven't compession tested, no CEL