Occasional stalling on cold start - Subaru Forester Owners Forum
User Tag List

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 16 (permalink) Old 09-16-2007, 08:02 AM Thread Starter
The convert formely known as Lexusfreak
 
Subifreak's Avatar
 
Join Date: Jan 2006
Location: St. Thomas, Ontario
Posts: 4,261
Car Year: 2003
Car Model: XS
Exclamation Occasional stalling on cold start

The wife's 03 XS has occasionally stalled recently on cold start up's within about 5 - 8 seconds of idling (no check engine lights or anything on the dash). A major tune up will be done in the near future (NGK platinum plugs, air filter, fuel filter, PCV valve will be replaced & timing adjusted). New wires (NGK's) were installed less than 2 years ago so I know they are fine & there is a brand new battery in the car. Only quality gas is used in our vehicles (Sunoco or Shell).

The vehicle has 126,000 kms (78,000 miles) on the clock.

Is there anything else I should consider servicing? I am also thinking about having the throttle body cleaned (can anyone tell me a rough price I should pay for this?). Any other suggestions are appreciated.....thanks!

Bren

Proud owners of a 03 XS & 2005 Lexus ES330
Subifreak is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 09-16-2007, 08:43 AM
Super Moderator
Contributing Member
 
bbottomley's Avatar
 
Join Date: Jan 2006
Location: New London, NH
Posts: 13,018
Car Year: 2003
Car Model: XS Premium
Transmission: MT
Seafoam for the throttle body? About $6! Smooth engine--priceless!

How recently did you replace the battery? Brand new battery = ECU got reset. Sometimes it takes a few starts before the Forester is back to working OK. Mine was absolutely horrible for a short time once after a reset.

2003 XS Premium MT >200k miles! ● 2005 Impreza 2.5 RS MT ● Robin-Subaru Powered Generator

Last edited by bbottomley; 09-16-2007 at 09:25 AM.
bbottomley is online now  
post #3 of 16 (permalink) Old 09-16-2007, 10:11 AM Thread Starter
The convert formely known as Lexusfreak
 
Subifreak's Avatar
 
Join Date: Jan 2006
Location: St. Thomas, Ontario
Posts: 4,261
Car Year: 2003
Car Model: XS
Cool

Quote:
Originally Posted by bbottomley View Post
Seafoam for the throttle body? About $6! Smooth engine--priceless!

How recently did you replace the battery? Brand new battery = ECU got reset. Sometimes it takes a few starts before the Forester is back to working OK. Mine was absolutely horrible for a short time once after a reset.
Thanks bb.....where do I get the Seafoam.....any autoparts store or can I order it here from someone? (I have paypal now lol).

And the battery (Kirkland Signiture from Costco, group 35 - 640 CCA & 7 year warranty) was purchased in March of this year. I kept a close eye on things after it was installed & never had any issues.....so I don't think it's battery related.

Bren

Proud owners of a 03 XS & 2005 Lexus ES330
Subifreak is offline  
post #4 of 16 (permalink) Old 09-16-2007, 10:26 AM
Super Moderator
Contributing Member
 
bbottomley's Avatar
 
Join Date: Jan 2006
Location: New London, NH
Posts: 13,018
Car Year: 2003
Car Model: XS Premium
Transmission: MT
Quote:
Originally Posted by Subifreak View Post
Thanks bb.....where do I get the Seafoam.....any autoparts store or can I order it here from someone? (I have paypal now lol).

And the battery (Kirkland Signiture from Costco, group 35 - 640 CCA & 7 year warranty) was purchased in March of this year. I kept a close eye on things after it was installed & never had any issues.....so I don't think it's battery related.
Seafoam is a regular item at the autoparts store, and the subject of lots of discussion here--richly illustrated with pictures of its dramatic impact!

My pictures, one of which shows the location in the 2003 where you can inject it, are at Subaru upper engine cleaner. My cloud of smoke was not as dramatic as some of the others.

Nope, I guess itís not the ECU reset. I tried.

2003 XS Premium MT >200k miles! ● 2005 Impreza 2.5 RS MT ● Robin-Subaru Powered Generator
bbottomley is online now  
post #5 of 16 (permalink) Old 09-16-2007, 10:43 AM Thread Starter
The convert formely known as Lexusfreak
 
Subifreak's Avatar
 
Join Date: Jan 2006
Location: St. Thomas, Ontario
Posts: 4,261
Car Year: 2003
Car Model: XS
Cool

I appreciate the info bb.....thanks! In addition to what has been already mentioned (tune up & Seafoam)......any other possibilities I should consider?

Bren

Proud owners of a 03 XS & 2005 Lexus ES330
Subifreak is offline  
post #6 of 16 (permalink) Old 09-16-2007, 03:25 PM
Forum Member
 
tallazzPilipino's Avatar
 
Join Date: Dec 2006
Location: life without a fixed address
Posts: 5,548
Car Year: 05MY
Car Model: second SG6
Transmission: 4EAT > jdm 5MT
cold start-ups? how cold actually? i'm wondering if you have any sort of clogs (ie: PCV valve, IACV, do our engines have a FIT valve? -- i'm new to Subaru, catalytic converter -- must be hot to function properly).

on my dad's 79(?) Benz 230, it had problems staying on due to a clogged muffler. after sawing the exhaust piping, it stays on fine. running smooth is another story.

any vacuum leaks? this can make it difficult for the IACV (in relation to the ECM) to function correctly.

on a JDM B16A engine (in a 95 Civic Si) with a vacuum leak, my engine would slow die off. this was usually during the first starts of the day. when the IACV finally went bad, the car would buck (or have a real bad idle in neutral) and would quickly die.

if you do the sea foam stuff, make sure any internal gaskets (rubber-types) aren't too worn.

_taF

romidontplaythat!
- my second SG6
tallazzPilipino is offline  
post #7 of 16 (permalink) Old 09-20-2007, 02:58 AM Thread Starter
The convert formely known as Lexusfreak
 
Subifreak's Avatar
 
Join Date: Jan 2006
Location: St. Thomas, Ontario
Posts: 4,261
Car Year: 2003
Car Model: XS
Thumbs up

Quote:
Originally Posted by tallazzFilipino View Post
cold start-ups? how cold actually? i'm wondering if you have any sort of clogs (ie: PCV valve, IACV, do our engines have a FIT valve? -- i'm new to Subaru, catalytic converter -- must be hot to function properly).

on my dad's 79(?) Benz 230, it had problems staying on due to a clogged muffler. after sawing the exhaust piping, it stays on fine. running smooth is another story.

any vacuum leaks? this can make it difficult for the IACV (in relation to the ECM) to function correctly.

on a JDM B16A engine (in a 95 Civic Si) with a vacuum leak, my engine would slow die off. this was usually during the first starts of the day. when the IACV finally went bad, the car would buck (or have a real bad idle in neutral) and would quickly die.

if you do the sea foam stuff, make sure any internal gaskets (rubber-types) aren't too worn.

_taF
Temps are still fairly warm in these parts during the day......but it's starting to dip in the 40's at night.

No vacuum leak AFAIK.

I have a bunch of tune up parts on order......I will update after they are installed.

Bren

Proud owners of a 03 XS & 2005 Lexus ES330
Subifreak is offline  
post #8 of 16 (permalink) Old 09-20-2007, 09:05 AM
Forum Member
 
tallazzPilipino's Avatar
 
Join Date: Dec 2006
Location: life without a fixed address
Posts: 5,548
Car Year: 05MY
Car Model: second SG6
Transmission: 4EAT > jdm 5MT
^
yes, i'd like to know the outcome.

as far as i've had my MY01 (about 2 mo's), i've only noticed on first drive (after first cold start-up) that when i accelerate moderately, the engine has this sputter feeling like it's going to die. i let off the gas or accelerate ever so slowly and it's fine. after it's warmed up, it seems to be better.

always had assumption it might be the intake temperature while engine is still warming itself up. do our intake manifolds have a IAT sensor? also, which intake sensor do we have -- MAP or MAF?

thanks,

_taF

romidontplaythat!
- my second SG6
tallazzPilipino is offline  
post #9 of 16 (permalink) Old 09-20-2007, 04:28 PM Thread Starter
The convert formely known as Lexusfreak
 
Subifreak's Avatar
 
Join Date: Jan 2006
Location: St. Thomas, Ontario
Posts: 4,261
Car Year: 2003
Car Model: XS
Thumbs up

I'll keep you posted tall....perhaps someone can answer your question in your last thread....cause I am honestly not sure.

Bren

Proud owners of a 03 XS & 2005 Lexus ES330
Subifreak is offline  
post #10 of 16 (permalink) Old 09-20-2007, 04:38 PM
Forum Member
 
TECH MOD's Avatar
 
Join Date: May 2006
Location: Ontario,Canada
Posts: 1,055
Car Year: 01
Car Model: Forester Ltd
01 Is a map sensor, you can get Seafoam at Napa, My 01 chokes a bit when cold while accelerating , not always , i take it slow while it warms up and its find.

01 Silver LTD MT5/HI-FLO/ 98 S MT5
TECH MOD is offline  
post #11 of 16 (permalink) Old 09-20-2007, 04:39 PM
Contributing Member
 
ferret's Avatar
 
Join Date: Jan 2006
Location: Northern NJ
Posts: 3,356
Car Year: 2014
Car Model: Impreza Ltd
Transmission: CVT
All my EJ's have developed this behavior after the first few yrs of ownership. My 78, 82 or 85 didn't, but starting with MY90 Legacy 2.2 right thru to the current 04XS, cooler weather starts usually have a sputter or stall, then starts smoothly after that.

I never encountered a problem due to this behavior, just needing a 2nd start.

98S, 2014 Impreza 5 dr Ltd (9 Subaru's since 1978, 7 were 5 sp) ILuvSubaru's
ferret is offline  
post #12 of 16 (permalink) Old 09-21-2007, 04:31 AM
'03 XS MT PSM
Contributing Member
 
mikebike357's Avatar
 
Join Date: Jan 2006
Location: South Portland, ME
Posts: 2,434
Car Year: 2003
Car Model: Forester XS
We've had morning temps in the low 40's here in Maine a couple times already... My 03 XS foz stalled. I don't know why, but if I just tap the gas and give it a little rev it's fine. It only happens when it's been sitting outside overnight.

I've replaced the fuel filter, plugz, etc in the last 2k miles (60k maintenance). I have a set of plug wires I need to stick on too. PCV was replaced about a year ago and the air filter was cleaned this summer.

Even the new 08 Brokeback makes some funky noises on the cold mornings.... it doesn't stall but the RPM's and engine sound are pretty funky.

2003 Forester XS 5MT
2008 Outback 2.5i 5MT
mikebike357 is offline  
post #13 of 16 (permalink) Old 09-21-2007, 06:17 AM
Forum Member
 
problemcat13's Avatar
 
Join Date: Jul 2006
Location: Winston Salem, NC
Posts: 2,199
Car Year: 2011
Car Model: VW GTI
Transmission: 6 MT
Sorry I can't help; we've had a 95 outback (2.2L) and my current 99 Foz and have never had such an issue with either. We lived in Boone for a while and it would drop to 0, so that's a fairly cold start. Guess I just wanted to say it doesn't sound normal to me.

So many things it 'might' be, hard to say...

95 Legacy
99 Foz
04 Foz XT

11 VW GTI + 13 FJC
problemcat13 is offline  
post #14 of 16 (permalink) Old 09-21-2007, 10:21 AM
Registered User
 
porcupine73's Avatar
 
Join Date: Dec 2006
Location: Buffalo, NY
Posts: 153
Car Year: 2000
Car Model: Outback
Do you have any kind of reader that will tell you what the ECU thinks the engine coolant temp and intake air temp is?
porcupine73 is offline  
post #15 of 16 (permalink) Old 09-21-2007, 01:31 PM
'03 XS MT PSM
Contributing Member
 
mikebike357's Avatar
 
Join Date: Jan 2006
Location: South Portland, ME
Posts: 2,434
Car Year: 2003
Car Model: Forester XS
Mine typically does it only when it's cold AND when it's damp out...

2003 Forester XS 5MT
2008 Outback 2.5i 5MT
mikebike357 is offline  
Sponsored Links
Advertisement
 
Reply

  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Engine and Exhaust > EJ25 - 2.5L Non-Turbo (1998-2010)

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Subaru Forester Owners Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome