Cadillac STS The newest installation of the performance sedan from Cadillac, having replaced the Seville

New to forum

  #1  
Old 03-17-2007, 05:11 PM
Thread Starter
Join Date: Mar 2007
Posts: 2
Default New to forum

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?



 
  #2  
Old 03-17-2007, 05:34 PM
Stealth's Avatar
Super Moderator
Join Date: Feb 2007
Posts: 3,945
Default RE: New to forum

[sm=welcomesign.gif]

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 ...



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?



 
  #3  
Old 03-17-2007, 06:22 PM
Thread Starter
Join Date: Mar 2007
Posts: 2
Default RE: New to forum

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 .
 
  #4  
Old 03-17-2007, 08:09 PM
Stealth's Avatar
Super Moderator
Join Date: Feb 2007
Posts: 3,945
Default RE: New to forum

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:







[IMG]local://upfiles/2893/AEDA86E09DC64D65BEF37674241F0F4C.jpg[/IMG]
 
  #5  
Old 03-19-2007, 12:36 AM
Katzmans Caddy's Avatar
Super Moderator
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: New to forum

ORIGINAL: Stealth

[sm=welcomesign.gif]

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 ...



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.
 
  #6  
Old 03-19-2007, 01:19 AM
Stealth's Avatar
Super Moderator
Join Date: Feb 2007
Posts: 3,945
Default RE: New to forum


sure did .. best add coils to the list.

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








.

 
  #7  
Old 03-19-2007, 02:31 AM
Katzmans Caddy's Avatar
Super Moderator
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: New to forum

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........
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RiceH8TR
Member Introduction
5
03-24-2008 08:03 AM
92nsx
Member Introduction
4
03-17-2008 01:38 PM
samm
Member Introduction
1
12-06-2006 12:27 PM
ericraven2003
Member Introduction
1
03-16-2006 01:11 PM
STSnebraska
Member Introduction
1
12-12-2005 04:01 PM


Thread Tools
Search this Thread
Quick Reply: New to forum


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.