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New to forum - 3/17/2007 3:11:32 PM

h4x0rz

Posts: 2
Joined: 3/17/2007
Status: offline

Hello, I'm new!

just here to ask a few questions. My dad baught a 99 cadillac STS. The engine does not turn over on the first try a lot of the times when the engine is Warm, and when it does, when the engine is idling, I can feel the engine shake (RPMS are approx 1000 RPM)

Now, other than the spark plugs and wires (I will replace these shortly), could there be any other issues that I may want to look at?

Post #: 1

RE: New to forum - 3/17/2007 3:34:58 PM

Stealth

Posts: 3060
Joined: 2/18/2007
Status: offline

some starters get hot from the heat off the manifolds and i seen fixes ranging from
replacing the starter to installing a heat shield. if yours turns over once it cools,
the issue is probably among these.

the engine idle .. plugs, wires, idle controller, carbon build up in intake throttle,
vacuum leaks, water in gas, timing, injectors, O2 sensors, etc ...

quote:

ORIGINAL: h4x0rz

Hello, I'm new!

just here to ask a few questions. My dad baught a 99 cadillac STS. The engine does not turn over on the first try a lot of the times when the engine is Warm, and when it does, when the engine is idling, I can feel the engine shake (RPMS are approx 1000 RPM)

Now, other than the spark plugs and wires (I will replace these shortly), could there be any other issues that I may want to look at?

< Message edited by Stealth -- 3/17/2007 3:42:29 PM >

(in reply to h4x0rz)

Post #: 2

RE: New to forum - 3/17/2007 4:22:45 PM

h4x0rz

Posts: 2
Joined: 3/17/2007
Status: offline

is there a screw that I can adjust the idle speed? I will also take a look at the throttle body, IAC valve for carbon buildup / garbage.

My own vehicle, the idle speed is controlled by the ECU and cannot be changed / altered w/o reporgramming.

Thanks for your help .

(in reply to Stealth)

Post #: 3

RE: New to forum - 3/17/2007 6:09:51 PM

Stealth

Posts: 3060
Joined: 2/18/2007
Status: offline

no screw. i believe that the idle is regulated by the air control valve
too detailed for me w/o a manual.

may look like this one:

Thumbnail Image

Attachment (1)

(in reply to h4x0rz)

Post #: 4

RE: New to forum - 3/18/2007 10:36:10 PM

Katzmans Caddy

Posts: 1314
Joined: 12/3/2006
Status: offline

quote:

ORIGINAL: Stealth

some starters get hot from the heat off the manifolds and i seen fixes ranging from
replacing the starter to installing a heat shield. if yours turns over once it cools,
the issue is probably among these.

the engine idle .. plugs, wires, idle controller, carbon build up in intake throttle,
vacuum leaks, water in gas, timing, injectors, O2 sensors, etc ...

quote:

ORIGINAL: h4x0rz

Hello, I'm new!

just here to ask a few questions. My dad baught a 99 cadillac STS. The engine does not turn over on the first try a lot of the times when the engine is Warm, and when it does, when the engine is idling, I can feel the engine shake (RPMS are approx 1000 RPM)

Now, other than the spark plugs and wires (I will replace these shortly), could there be any other issues that I may want to look at?

Stealth you forgot my favourite....the coils.

(in reply to Stealth)

Post #: 5

RE: New to forum - 3/18/2007 11:19:45 PM

Stealth

Posts: 3060
Joined: 2/18/2007
Status: offline

sure did .. best add coils to the list.

Katz ... i was wondering where you been.
you go fishing with Gary?

.

(in reply to Katzmans Caddy)

Post #: 6

RE: New to forum - 3/19/2007 12:31:56 AM

Katzmans Caddy

Posts: 1314
Joined: 12/3/2006
Status: offline

quote:

ORIGINAL: Stealth

Katz ... i was wondering where you been.
you go fishing with Gary?

The only fishing here is Ice Fishing, we got hit with another storm spent 3 hours cleaning up outside after that, windshield wipers in the GMC broke right in the middle of the sleet storm, tore the cowl apart to get them right, 2 more hours, then just add in busy life with wife and kids........

(in reply to Stealth)

Post #: 7