2005 SE - Engine Idle - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-29-2007, 11:41 AM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jun 2006
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
measlick is on a distinguished road
Default 2005 SE - Engine Idle

I am an on call fire fighter and we use our own vehicles to respond to scenes. Sometimes this means my 05 will idle for a long period of time. (lights running)

Something I have noticed lately is my car kind of shakes while it idles, not in a rhythm, it'* pretty random and almost "feels" like a jump, like it'* idle is to low.

I guess I will need to fix that if it is a problem but on another note is there something I should be doing to make my car happier about idling for long periods of time?

Thanks!
measlick is offline   Reply With Quote
Old 03-29-2007, 11:48 AM   #2
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

A suggestion that I noticed on my own car is I didn't care for where the fans kick on.

If the car is idling like you mention, it is merely sitting there generating heat until the fans come on, cooling, generating. The temps were 200-225ish. Personally higher than I'd like. You may want to consider having the fan temps lowered in the PCM. This will keep things cooler and happier.

As for your idle issues, please post in the 2000-2005 mechanical section and we'll help you out in a jiffy.
BillBoost37 is offline   Reply With Quote
Old 03-29-2007, 05:12 PM   #3
Senior Member
Posts like a Turbo
 
Join Date: Mar 2006
Location: Houston, Tx
Posts: 367
Thanks: 0
Thanked 0 Times in 0 Posts
BonnevillesSince62 is on a distinguished road
Default

If, by lights on you mean emergency lights and headlights, I'd look for a way to keep the idle up around 1200 rpms to keep the alternator putting out enough amps. The difference between 800rpm idle and 1200 as far as amp output can be a lot! I haven't examined the pedal setup, but I would think you could make some mechanical means to do this rather easily.

I'd also get the PCM programmed and use a 180 thermostat. In the meantime, leave the A/C ON, so that the fans run (they'll run with the A/C on, but wait for the 215 degree mark otherwise). In a case like yours where you ONLY want to run the fans during extended idle (and aren't looking for other improvements via programming), you might just do a manual switch to the fan relay(*).
BonnevillesSince62 is offline   Reply With Quote
Old 03-29-2007, 05:25 PM   #4
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jun 2006
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
measlick is on a distinguished road
Default

Thanks! I noticed on our rescue when you set the emergency break (pedal) the rescue runs in high idle. I haven't asked anyone how this was done, this may be a bit extreme in my case. I didn't know running AC runs the fans, that'* good to know although I thought having AC on in hot weather was a no/no while idling.

I will definitly check on getting the sensor changed, that I think would help.

Update: I should note my lights mostly consist of LEDs and are very low amperage. My OH does have 2 strobes and I do have wig/wags so at the most those two items would be the most draining.
measlick is offline   Reply With Quote
Old 03-29-2007, 05:47 PM   #5
Senior Member
Posts like a Turbo
 
Join Date: Mar 2006
Location: Houston, Tx
Posts: 367
Thanks: 0
Thanked 0 Times in 0 Posts
BonnevillesSince62 is on a distinguished road
Default

Quote:
Originally Posted by measlick
Thanks! I noticed on our rescue when you set the emergency break (pedal) the rescue runs in high idle. I haven't asked anyone how this was done, this may be a bit extreme in my case. I didn't know running AC runs the fans, that'* good to know although I thought having AC on in hot weather was a no/no while idling.

I will definitly check on getting the sensor changed, that I think would help.

Update: I should note my lights mostly consist of LEDs and are very low amperage. My OH does have 2 strobes and I do have wig/wags so at the most those two items would be the most draining.
Yeah, if you just let the car idle with the A/C off, the temp gets too high (for my taste) before the PCM commands the fans come on. That'* not good for the engine or trans, as the trans fluid is cooled by a cooler in the passenger side radiator tank. On this car with stock programming, I'd run the A/C at idle if the car was stock, as long as the outside temp was above freezing. The PCM must be reprogrammed to change the temp at which the fans come on otherwise.

I think I'd do the manual fan switch. You can buy one here:

http://www.zzperformance.com/grand_p...=194&catid=107

although it'* for a Grand Prix. A search in the 2000-2005 section shows that it was installed on a Bonneville successfully.

As far as amperage, if you have the headlights, wig-wags on the high beams, OH lights, etc AND both fans running as they should be, you're taxing the system pretty heavily at 800rpm idle. I do think the cooling is the bigger of your concerns, though.
BonnevillesSince62 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Engine Swap with an Idle Engine Buck Pontiac Bonneville 14 07-15-2013 11:43 AM
2005 sle low idle 03BlackSapphireSLE 2000-2005 4 01-09-2010 12:16 AM
Update - engine surges at idle when engine is warm billha 1992-1999 8 06-28-2005 12:55 PM
2005 Mercedes SLR vs. 2005 Merecedes AMG E55 SSsuperchargedEi Your Other Rides: Pics & Videos 12 10-21-2004 12:51 AM
Madden 2005 and Ncaa 2005 Kennginn Lounge 6 08-15-2004 03:43 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:23 AM.


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.