Go Back   LS1TECH > WELCOME TO LS1TECH > New LS1 Owners - Newbie Tech
Sign in using an external account
Register Forgot Password?
Search

New LS1 Owners - Newbie Tech
Basic Technical Questions & Advice
Sponsored by
Improved Racing

Idling Prob At Startup

Reply
 
Thread Tools Search this Thread
Old 04-27-2004, 07:05 PM   #1
On The Tree
 
TXLSS's Avatar
 
Trader Rating: 0
Join Date: Nov 2003
Posts: 121
Default Idling Prob At Startup

The last couple of days, my '01 SS acts funny when I first start. When I leave for work in the afternoon(working nights this week), I start it to warm it up before I leave. Yesterday and today, at startup, it idles down low (around 500 rpm) and almost dies before the pcm catches it, brings it up and then it drops down again. It will stay running, but I'm worried. This continued today even after I started driving. I stopped for gas, then started it up no prob. after that(normal rpm) w/ no issues. It's almost like the pcm is resetting/relearning everything when I start it? However, in the morning when I leave to head home, there's no problem. Bad gas? Change the fuel filter? I'm at a loss. Anybody who knows or has had similar experiences gimme some info. Thanks in advance.
__________________
2001 PEWTER SS M6 - CME, Lid, Cutout, Lots more to come...
TXLSS is offline   Reply With Quote
Old 04-27-2004, 07:21 PM   #2
TECH Enthusiast
 
ALPINE's Avatar
 
Trader Rating: 0
Join Date: Dec 2002
Location: College Staion, Texas
Posts: 546
Send a message via AIM to ALPINE
Default

Mine does that EVERY time I start it when it's cold. I blame it on the cam, MTI tuned it. I've asked them about it but they just blow me off. I just changed my fuel filter a week ago trying to fix this, so I don't think the problem is there.
__________________
2k Silver SS M6 #2444:
TR220, lid, fernco, LT hookers, Borla, free-mods, !CAGS, !EGR, !AIR, TB bypassed ported and polished, TR-55's, MSD 8.5mm Wires, Centerforce Dual Friction, Ripper, Diamond SFC's, 3.73's, N555DR's.
'07 Escalade AWD - Just stereo mods.
'03 Z06:
239/242, P/P LS6 heads, Varaam Intake, FLP Headers, Billy Boat Exhaust, Spec Stage 3 Clutch, NXL.
'86 Chev 1/2 ton
Pat Musi 572 c.i.d. too much to list.. 1100 HP
'07 MB E63 AMG
507 HP stock.
ALPINE is offline   Reply With Quote
Old 04-27-2004, 08:11 PM   #3
On The Tree
 
TXLSS's Avatar
 
Trader Rating: 0
Join Date: Nov 2003
Posts: 121
Default

Yeah, I considered the cold engine factor, but in the morning, when it's actually colder outside (than in the afternoon when prob occurs), the car starts up and idles fine. The only mod, besides a cutout, is a lid.(I put orig. programming from HPP3 back) Somebody has to have an idea what's up w/ my car.
__________________
2001 PEWTER SS M6 - CME, Lid, Cutout, Lots more to come...
TXLSS is offline   Reply With Quote
Old 04-27-2004, 09:18 PM   #4
TECH Enthusiast
 
ALPINE's Avatar
 
Trader Rating: 0
Join Date: Dec 2002
Location: College Staion, Texas
Posts: 546
Send a message via AIM to ALPINE
Default

Hmm, that's odd. I have the problem regardless of outside temp. Good luck finding the problem.
__________________
2k Silver SS M6 #2444:
TR220, lid, fernco, LT hookers, Borla, free-mods, !CAGS, !EGR, !AIR, TB bypassed ported and polished, TR-55's, MSD 8.5mm Wires, Centerforce Dual Friction, Ripper, Diamond SFC's, 3.73's, N555DR's.
'07 Escalade AWD - Just stereo mods.
'03 Z06:
239/242, P/P LS6 heads, Varaam Intake, FLP Headers, Billy Boat Exhaust, Spec Stage 3 Clutch, NXL.
'86 Chev 1/2 ton
Pat Musi 572 c.i.d. too much to list.. 1100 HP
'07 MB E63 AMG
507 HP stock.
ALPINE is offline   Reply With Quote
Old 04-29-2004, 01:41 AM   #5
TECH Fanatic
 
CaptUSA's Avatar
 
Trader Rating: 5
Join Date: Apr 2004
Location: San Diego
Posts: 1,213
Default

I have an identical problem!! Please PM me if you ever get an answer. For me, I've been thinking it's not so much outside temp (for same reason as you), but time turned off. Anything more than about 6 hours and I get the problem... anything less, and it's totally normal! Please advise when you get an answer. Thanks!!
... LMAO.... Wow, some help I was eh?? So much for a forum producing good info. LOL
__________________
Black '01 SS. Bone stock M6.
(For Now)

2002 SOM HARDTOP SS 373rwhp Sold
TR 224, Mac Mids w/ Catted Y, SLP lid w/ K&N
BMR SFC's and STB, Koni SA's lower perch & heater hose mod, American Thunder 3" catback.
CaptUSA is offline   Reply With Quote
Old 04-29-2004, 09:39 AM   #6
TECH Veteran
 
dhdenney's Avatar
 
Trader Rating: 53
Join Date: Feb 2004
Location: Monticello, Kentucky
Posts: 4,437
Send a message via AIM to dhdenney Send a message via MSN to dhdenney
Default

Even though I have an LT1, I had a similar problem with I got mine outta storage. I didn't use Stabil over the winter and it wouldn't idle at all with the bad gas. It would drop below the idle I had set and die. Do you LS1 guys run premium? I actually read in the manual once (a 2001 Formula manual) that regular 87 is fine! WTF! Since you guys are out west, you might be getting that shitty fuel I have read about. Environmentally friendly or something. Probably just 91 too??? The article was in Popular Hot Rodding almost a year ago and it said this gas was not very LS1 friendly. Maybe your situation, maybe not, but food for thought.
__________________
*2012 Audi A3 TDI, Premium Plus, DSG, Ibis white
*1994 Pontiac Firebird Formula, Gt47-80 turbo, 580 rwhp/700 rwtq
*2004 Jeep Liberty Sport 4X4
dhdenney is offline   Reply With Quote
Old 04-29-2004, 10:21 AM   #7
12 Second Club
 
Derek98z's Avatar
 
Trader Rating: 55
Join Date: Jul 2002
Location: Raymore, MO
Posts: 1,793
Default

so did you change the fuel filter? Maybe clean the IAC with some carb cleaner.
Derek98z is offline   Reply With Quote
Old 04-29-2004, 10:33 AM   #8
TECH Enthusiast
 
VoodooWS6's Avatar
 
Trader Rating: 0
Join Date: Feb 2004
Location: Naperville, IL
Posts: 553
Send a message via AIM to VoodooWS6 Send a message via MSN to VoodooWS6 Send a message via Yahoo to VoodooWS6
Default

I would also check your fuel injectors. There could be a bad pulse on just one injector, causing the car to idle funny. You might be starving for gas. Use a volt meter and check the resestence of each injector. I have had this problem twice!

I could also be a bad MAF..
__________________
2000 NBM WS6 A4--T-tops, MTI Clear Lid, Holly Powershot, Magnaflow Cat-back, Free mods...More comming soon! "All Show & All Go"
VoodooWS6 is offline   Reply With Quote
Old 04-30-2004, 01:22 AM   #9
On The Tree
 
TXLSS's Avatar
 
Trader Rating: 0
Join Date: Nov 2003
Posts: 121
Default

No, I haven't changed the filter yet, when I wake up today I'll do it. As for checking the injectors, I'll give that a shot, and clean the MAF. I heard rubbing alcohol or something for the MAF right? I remember reading something about putting the MAF in a plastic bag(submerged in alcohol) in the freezer over night-that can't be right can it? I dunno I'll do a search.
__________________
2001 PEWTER SS M6 - CME, Lid, Cutout, Lots more to come...
TXLSS is offline   Reply With Quote
Old 04-30-2004, 01:33 AM   #10
Staging Lane
 
two02camaro's Avatar
 
Trader Rating: 0
Join Date: Apr 2004
Posts: 62
Default

NO NO NO.....dont put it in the freezer!!!!!!!! I just had a dirty MAF and the only real good way to clean it is to spray it with carb cleaner! If you use alcohol like i did once, it wont clean it off real good, but with the carb cleaner it will burn off any dirt or oils and plus if it gets in your intake then it will just burn in your exhaust! so ya cant go wrong, i duno how much to spray, i would guess enough to just coat it! but dont bother wasting your time with the alcohol, it doesnt do the job as well as carb cleaner!
two02camaro is offline   Reply With Quote
Old 04-30-2004, 01:33 AM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply


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 On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 10:40 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details