SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn L-Series > L-Series Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 10-21-2006, 01:02 AM   #1
oscar5150
New Member
oscar5150 is on a distinguished road
 
Join Date: Oct 2006
Posts: 3
Default 2002 L 100 service engine light and rough idle

ok everybody need help here. I have a 2002 L100 4cyl. Just yesterday it started actingup. Let me try and explain.......

first had trouble starting then it is ideling very rough and the radiator fans turn on right away and stay on and the service engine light stays on, it also has trouble shifting and when it does it shifts hard. I have never received any recall notice is there a recall on these cars?

I took it to Autozone and they said the codes say it is either
1.in need of a tune up
2. needs new fuel injectors
3. has a vacuum leak.

Any suggestions????

Thanks
OR

REWARD EXCELLENCE!

Add to oscar5150's Reputation
Rate the quality of this post and help oscar5150 reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
oscar5150 is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 10-21-2006, 09:10 AM   #2
fdryer
Super Member
fdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant future
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 29,691
 

2003 L-Series 3.0L Sedan
Default Re: 2002 L 100 service engine light and rough idle

Welcome to the forums!

It was good that you went to AutoZone but next time, as everyone here states, get the codes and not the recommendations. If you don't have a list of diagnostic codes along with their explanations you would be prey to A-Z or anyone selling parts and services you may not need. Its in their interest, not yours, to suggest things to do but if they aren't over-the-counter certified automotive technicians one would have to think they may have an ulterior motive in supplying quick and easy answers. As you will find here or anywhere there is a list of trouble codes that will match what the code readers put out. Then someone here can help interpret the symptoms and quite possibly suggest the right solution.

As has been pointed out in these forums, one of the items covered by the 8-yr., 80k mile emissions warranty are the fuel injectors. $$$ for A-Z but not likely the solution. A tune-up would suggest parts replacement but before buying anything have you been keeping up with standard maintenance in regards to air filter, oil and filter changes? Vehicle mileage? A vacuum leak is possible and can be checked by visually inspecting all vacuum hoses and intake manifold by spraying suspected leaks with starting fluid, carb cleaner, or anything containing a combustible that will affect the idle. A leak drawing the spray into the engine will immediately alter the idle speed and point you in the direction of repair.

As you become familiar with this message board one method that may help is to scan down to the bottom of this post and some past threads with matching phrases may have been posted similar to yours. Click on those threads to read if similar problems exist or type some key words in the search box to find past threads. And then there is the Forum Jump box to pull down tabs pointing to specific vehicle models that matches yours and go from there. There is a wealth of information here, take your time and research around as you'll likely find an answer to your problem.

REWARD EXCELLENCE!

Add to fdryer's Reputation
Rate the quality of this post and help fdryer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
fdryer is offline   Reply With Quote
Old 10-21-2006, 09:46 AM   #3
oscar5150
New Member
oscar5150 is on a distinguished road
 
Join Date: Oct 2006
Posts: 3
Default Re: 2002 L 100 service engine light and rough idle

OK here is a bit more information. The car has 57.000 miles I have kept up with air and oil filter changes and have checked for vacuum leaks by spraying the vacuum lines but that did no good. My next option is to check the fuel pressure. any other suggestions?

REWARD EXCELLENCE!

Add to oscar5150's Reputation
Rate the quality of this post and help oscar5150 reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
oscar5150 is offline   Reply With Quote
Old 10-21-2006, 10:27 AM   #4
fdryer
Super Member
fdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant future
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 29,691
 

2003 L-Series 3.0L Sedan
Default Re: 2002 L 100 service engine light and rough idle

Your 1st post states the fan is on and stays on; if it does this all the time it suggests the engine coolant temperature sensor is faulty. There are excellent threads covering this, the resin tipped one that affects idling, rough running, overheating radiator due to the radiator fan not turning on, etc.. Your situation seems to be the opposite since the radiator fan is on instead of off until needed by the engine computer.

If it wasn't for the fan running all the time (relay stuck?) I would look at the EGR valve; it should remain closed at idle speed and gradually open allowing exhaust into the intake during part throttle operation for emission purposes. If the valve is partially open the exhaust will interfere with smooth idling causing a rough idle and/or stall the engine.

Last edited by fdryer; 10-21-2006 at 10:32 AM..

REWARD EXCELLENCE!

Add to fdryer's Reputation
Rate the quality of this post and help fdryer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
fdryer is offline   Reply With Quote
Old 10-21-2006, 04:44 PM   #5
ssicarman
Super Member
ssicarman is a name known to allssicarman is a name known to allssicarman is a name known to allssicarman is a name known to allssicarman is a name known to allssicarman is a name known to all
 
ssicarman's Avatar
 
Join Date: Oct 2000
Location: Western Canada
Posts: 10,236
 
Default Re: 2002 L 100 service engine light and rough idle

Have you had the ignition module campaign done on the car? It sounds like a couple of the cylinders are not firing which is typical of a bad module. I would not reccomend driving the car as you stand a chance of damaging the converter. Not to mention you will not have good power and you could be in trouble on the road.
If the SES light starts flashing definately do not drive it as that is the signal from the PCM that the converter is being murdered.

...
A lousy day in paradise is still a day in paradise.

REWARD EXCELLENCE!

Add to ssicarman's Reputation
Rate the quality of this post and help ssicarman reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
ssicarman is offline   Reply With Quote
Old 10-24-2006, 09:57 PM   #6
iroc90
New Member
iroc90 is on a distinguished road
 
Join Date: Oct 2006
Posts: 3
Default Re: Some what same problem on 2001 L200

I have a 2001 L200 with about 80k miles, the fan runs high all the time, it hesitates like a misfire in drive, seems ok in park, my car broke down one day, it all started with a damaged convertor and o2, so I have changed both of those, then i found this site talking about the coil issues, well i changed the coil and still same problem bad hesitation in drive, I used a scan tool to check for codes and got P0171A, cylinder 2,3,4 misfire, and the o2 # 1 reads .4v and o2 #2 reads .959, any suggestions??

Thanks
Andy

REWARD EXCELLENCE!

Add to iroc90's Reputation
Rate the quality of this post and help iroc90 reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
iroc90 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough IDLE/Low IDLE no check engine light savage21 Vue Tech 9 12-08-2010 12:27 AM
Rough Idle, Blinking Engine Light RySci Ion Tech 15 01-12-2009 11:17 PM
Service Engine Light - rough acceleration MattGahan Vue Tech 4 12-14-2008 01:46 PM
service engine soon light, idle a bit rough tdm850rider S-Series General 24 01-26-2006 04:14 PM
Ignition Module / Engine Coolant Sensor Prob? Service Engine Light, Rough Performins Brendo613 S-Series Tech 14 10-19-2005 06:12 AM


All times are GMT -5. The time now is 02:10 AM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.