SaturnFans.com
saturnfans.com - classifieds - forums - webmail


Go Back   SaturnFans.com Forums > Models > Saturn L-Series > L-Series Tech

Reply
 
Thread Tools Display Modes
Old 03-30-2009, 08:14 AM   #1
trwolf
Junior Member
trwolf is on a distinguished road
 
Join Date: Oct 2002
Location: Central Texas
Posts: 17

2002 L-Series 3.0L Sedan
Wrench 2002 L300 - Unique starting problem

I have a problem with the car not wanting to start when the fuel tank gets below 1/2 or if the car is nose-up on a slope. It will crank just fine, but no fire. The engine temp - hot, cold, or otherwise - does not seem to matter. If I roll it down the slope to level or nose down, it will fire right up.

When it first began (40k ago), the dealer gave me some smoke and mirrors story about adjusting the angle of the tank to compensate. When the problem was only below 1/4 of a tank, the issue was tolerable (I could live with it). However, the problem has slowly gotten worse over time. Now I canít get much below 1/2 a tank.

That leads me to believe CPS is probably not the issue. I suspect fuel pump (pressure) or fuel filter (volume). Logically, if the tank has more fuel or the engine is lower than the tank (nose down), the pump doesnít have to push as hard to deliver the fuel. Filter seems less likely, since I have no symptoms any other time...

Anyone else had a similar issue? I plan to have some work done, and I want to give the mechanic some idea of the cause to cut down on his troubleshooting time.

Thanks in advance.
trwolf is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 03-30-2009, 08:41 AM   #2
Partymmudasti
Advanced Member
Partymmudasti is on a distinguished road
 
Partymmudasti's Avatar
 
Join Date: Jul 2003
Location: Michigan
Posts: 670

2003 VUE 3.0L
Default Re: 2002 L300 - Unique starting problem

Its a common problem with the L series.

Our 2000 LS did it, our 2005 L300 does it..

On both cars, under warranty- fuel tanks and pumps were replaced (twice on the 05 L300) trying to remedy the problem. Once they reprogrammed the PCM. It doesnt make a difference, its a design flaw.
I am concerned though that your L doesnt start under 1/2 tank on an incline... Ours was more problematic with 1/4 tank, for sure at 1/2 tank we had no problem.

Your mechanic is likely to look at it and replace the fuel pump. I firmly believe there are a lack of baffles in the gas tank or an baffle out of place.
Partymmudasti is offline   Reply With Quote
Old 03-30-2009, 07:40 PM   #3
Ex-GMtech
Advanced Member
Ex-GMtech has a spectacular aura aboutEx-GMtech has a spectacular aura aboutEx-GMtech has a spectacular aura about
 
Join Date: Jun 2007
Location: Akron, Ohio
Posts: 517

2000 L-Series 3.0L Wagon
Default Re: 2002 L300 - Unique starting problem

You may want to see if the fuel sending unit, not the fuel pump, is out of calibration. It could be reading high when it is nearer empty. My wife's 2000 LW2 has never had an issue starting even with it on E, in any postion. I wonder if poeple are looking at this frm the wrong perspective. I would rather have it read empty and still have some fuel in it.
...
OMG this car is easy to work on!

2000 LW2
2016 Impala
1986 GLHS
Ex-GMtech is offline   Reply With Quote
Old 03-31-2009, 07:15 PM   #4
trwolf
Junior Member
trwolf is on a distinguished road
 
Join Date: Oct 2002
Location: Central Texas
Posts: 17

2002 L-Series 3.0L Sedan
Default Re: 2002 L300 - Unique starting problem

I completely understand your threory Ex-GMtech, but the miles traveled and the gas that will go into the tank say the guage is right.
trwolf is offline   Reply With Quote
Old 03-31-2009, 08:19 PM   #5
fdryer
Super Member
fdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond repute
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 45,318
 

2003 L-Series 3.0L Sedan
Default Re: 2002 L300 - Unique starting problem

Well it was worth bringing it up to at least address the possibility of a faulty gas gauge sending unit.

Suspecting a fuel issue would require testing and the only way to remove all doubt of a fuel pump issue is to use a fuel pressure gauge attached to the fuel rail where the fuel test valve is located. Done correctly this can be used to monitor pressures at start, idling, driving (provision needed to have the gauge visible with the hood closed), and when you anticipate partial tank problems. Its either full pressure every time including at low fuel tank levels or not.

Be aware that attaching a fuel pressure gauge must be done with a known good reliable gauge, hose, and coupler to ensure that there won't be any possibility of gasoline leaking under pressure. Pressures can exceed 60psi and any leak can be considered dangerous near any source of ignition, low or high voltage. Normal fuel pressures with the engine running will be around 35psi, still hazardous if not familiar with fuel pressures and the inherent dangers associated with fuel pressure leaks.
...
VCX NANO

Last edited by fdryer; 03-31-2009 at 08:24 PM.
fdryer is offline   Reply With Quote
Reply

Bookmarks

Tags
1/4 tank, fuel pump, slope, starting problems, up hill


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
Unique 2002 S Series Promo models? manualman S-Series General 3 08-01-2009 08:19 PM
L300 Starting Problem Urbanrover L-Series Tech 2 04-15-2009 05:58 PM
2002 l300 problem- p0727 black300 L-Series Tech 1 03-22-2009 12:44 PM
2002 l300 problem jblckwd L-Series Tech 6 03-21-2009 10:15 AM
2002 L300 Not Starting muzikmann L-Series Tech 1 05-25-2008 10:46 PM


All times are GMT -4. The time now is 03:42 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
SaturnFans.com. The Saturn Enthusiasts Site.