Last post on Jan 23, 2010 at 8:59 AM
You are in the Saturn S-Series
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Saturn S-Series, Engine, Sedan
#61 of 81 2000 Saturn SL2 hard to start
Nov 05, 2008 (10:46 am)
My daughters Saturn has all of a sudden become hard to start after is sits for a while. It turns over fine but will not start unless you press the gas pedal part way. It will then start, spit a little black smoke and be fine.
Plugs, wires and ECT sensor have been replaced. Did not replace ECT connector wire though.
Any ideas what I should check next?
Can anyone tell me what the fuel pressure should be on this 1.9l engine?
#62 of 81 Re: 2000 Saturn SL2 hard to start [thorton1]
Nov 05, 2008 (12:45 pm)
Is the problem at warm start after sitting a while or a cold start after sitting overnight? Once the car is started with help of pedal, the car is perfect after that, i.e. idles perfect and no drivability issues at all, etc?
#63 of 81 Re: 2000 Saturn SL2 hard to start [booboo6]
Nov 05, 2008 (1:08 pm)
Problem is after sitting for quite a while. Like at school all day or overnight. Once started all is fine, runs great and no issues. I did find some posts in the Saturn Forum that said i should try swapping the Fuel Pump Relay and the HVAC Blower Relay. There were actually a couple posts about that. Will try that tonight and see what happens. If you have any further suggestions they would be appreciated. Thanks.
#64 of 81 Re: 2000 Saturn SL2 hard to start [thorton1]
Nov 05, 2008 (2:22 pm)
I tend to not think it is the relay. If my memory serves me correctly, when ignition is put in "on" position before cranking, the buzzing of the operating fuel pump may be heard if you have someone at the back of the car. Opening up the fuel cap may help hear it better. If no cranking takes place in 5 seconds or so, the fuel pump stops and restarts when cranking. By then you know the relay is fine. If the problem is presistent until you use the gas pedal, I tend to think problem is elsewhere, especially after repeated cranking with no start. What I mention now is counter-intuitive, but the Saturn ECU is very sensitive to electrical noise. A bad alternator caused similar running problems for another car, but the closest other incident I could recall was on a Saturn in which the battery terminals were loose. Plenty of battery contact to crank and all, but the ECU had trouble from the loose connection anyway. Twist the two connectors and see if they are obviously loose, if not, we look elsewhere. I'm assuming no error codes to report. A really bad loose connection on battery, even though enough to crank, sometimes cough up U1300 code. For now, check the battery connection (also look for acid leak, GM-Delco battery prone to leak with side post battery).
#65 of 81 Re: 2000 Saturn SL2 hard to start [booboo6]
Nov 05, 2008 (4:29 pm)
No error codes. No battery leaks.
Fuel pump can be heard. I went ahead and checked the pressure. It stayed constant at 48 pounds. I had already switched the relays before seeing your reply.
The battery cables did not move when twisted. The ground cable was not loose but it was not as tight as it should have been. It took no effort at all to loosen the connection. The positive connection had some corrosion. Cleaned both battery contacts and cables and reinstalled.
Will see what happens in the morning. Your help is greatly appreciated. Will post and let you know what it does.
#66 of 81 Re: 2000 Saturn SL2 hard to start [thorton1]
Nov 05, 2008 (4:56 pm)
OK! You are thorough. I am retired and drive inter-state a lot and keep my '02 SL1 in perfect shape always. I attacked a few problems over the years on my car alone. What you are describing, with help of elimination process, sounds awfully like the start of the intake manifold gasket leak. The ills of a fully developed problem may not show up for half year or more depending on how many miles you drive. When engine is cold, the gasket leaks more and excessively dilutes the air-gas mix, but gasket seals up somewhat when head is hot. The leak initially is not enough to create a real problem after starting, but give it a few weeks and it may. Are you experiencing the following?:
1. Tiny trace of coolant smell coming from exhaust or very gradual loss of coolant?
2. Extra tough starting on the colder mornings.
3. Look at the engine at hot idle. Do you see a slight jitter as if one cylinder has a slight miss. Listen for corresponding pop on exhaust too (misfire).
#67 of 81 Re: 2000 Saturn SL2 hard to start [booboo6]
Nov 10, 2008 (5:30 am)
I have not noticed any of the items you listed for the intake gasket. Coolant has never been low and cannot notice any smell with the exhaust.
Good thing is since my last writing to you the car has started fine. The last things i did were to clean the ECT plug well and put some dialectric grease on it. Cleaned and tightened the battery terminals. Cleaned the throttle body (did not remove for thorough cleaning). So far so good, hope it stays this way.
Thanks for all the help
Sep 06, 2009 (10:20 am)
My saturn has a problem with idle speed.. It idles about 1100 rpm, sometimes this goes up and down.. Sometime when I come up to a red light or down shift it'll stall out... It was doing this most of the day yesterday, and this morning I went to start it up and it didn't want to start or stay running.. I finally got it started.. It stalled out at every light for about 30 min, and then it was fine except for it was ideling very high... I had a friend come over with a snap on scan tool, but there was no code... I don't have a clue what to do now...
#69 of 81 Re: 2001 sc1 [jdw122275]
Sep 06, 2009 (11:36 am)
It sounds like the usual intake manifold gasket leak. But there should have been a code registered. It sounds bad enough to stall the engine and should have registered something in the OBD-II. I take it there was no check engine soon light? If no Check engine soon light, then there is no code.
#70 of 81 Re: 2001 sc1 [booboo6]
Sep 06, 2009 (11:50 am)
there was no engine light on... No codes stored in the computer... I don't know what sensors would control the idle... It doesn't idle rough. This doesn't happen every time...