Hard to start, acts like it's flooded. Also high engine idle--3,000 to 4,000 rpm

zylicz
30

Asked by zylicz Mar 12, 2013 at 01:35 AM about the 2000 Saturn L-Series 4 Dr LS Sedan

Question type: Maintenance & Repair

Have trouble starting half the time. When this occurs I have to hold accelerator down all the way as when an engine is flooded. When I come to a stop in gear it idles at very high rpm

17 Answers

judge_roy
Not Active

your check engine light tells us what? Bad O2 sensor?

1 out of 1 people think this is helpful.
DavidH25
Not Active

Your 2.2L I4 DOHC 16V FI Engine is designed to start by just turning key without you foot on gas petal.The ECM knows what to do. Same even of you have the higher end LSX with the 3.0L. That may be the problem right there, do not press the petal. If you must for it to start there is a fault in the ECM possibly, that could also explain the high idle, but that is one of many many possibilities, the O2 sensor just as Bob said, the list is too long to go through here

tenspeed
53,305

The O2 sensor is not a possibility. Engines start using the open loop which is a rich fuel mixture. After ten - thirty seconds, the O2 sensors come in when the ECU switches to closed loop operation. I would look for a vacuum leak which would lean out the starting mixture and cause high idle RPM. As David said, it could be many other things. It wouldn't hurt to get the engine codes read at the parts store.

2 out of 2 people think this is helpful.
John Saffrahn
16,165

Engine doesn't go into closed loop until both the engine hits an operating temp of about 160 and the O2 sensors have warmed up. Tenspeed is correct its not the O2 sensors.

3 out of 3 people think this is helpful.
John Saffrahn
16,165

Sounds like a vacuum leak. Flooded engine will idle rough not high.

3 out of 3 people think this is helpful.
tenspeed
53,305

Thanks John. Good to see you again.

DavidH25
Not Active

Really..welcome back

1 out of 1 people think this is helpful.
John Saffrahn
16,165

Been working

zylicz
30

Thanks everyone for all of your suggestions. Had my mechanic diagnose both the hard to start and racing idle problems yesterday and the solutiion was replacement of the engine coolant temp sensor. Works fine now. zylicz

3 out of 3 people think this is helpful.
j_abby
0

I know the OP's problem has been solved, but I'll add a couple clarifications for the benefit of others who, like I've just done, stumble upon this thread after the fact: 1) A vacuum leak often DOES yield a high idle: in these cases, the leak prevents operation at normal idle speed, so the ECU compensates by increasing idle speed to whatever point is capable of maintaining a sufficiently smooth and sustainable A/F mix. 2) On many vehicles, the ECM will remember a bad 02 sensor reading such that the reading DOES effect engine operation right upon the very next ignition attempt -- not several seconds or more afterwards.

judge_roy
Not Active

sounds like OBD-II you're describin' there~

1 out of 1 people think this is helpful.
robj7480
0

I have a 2001 Saturn SL1 and it is very hard to start. When it is cold it starts right up but after the engine is warm it takes forever. Once it is running it seems to be running OK. I have changed the Fuel Filter, the Plugs, Plug wires and PVC Valve.

John Saffrahn
16,165

Any other symptoms like check engine light, engine running rough, etc?

robj7480
0

the service engine soon light come on momentarily. Also, when it starts it runs rough at first, the smoothe. I read another post that said the problem could be the ECTS... what do you think?

robj7480
0

John, obviously I meant the service light comes on momentarily, (right after the engine starts) Sorry

John Saffrahn
16,165

Coolant temp sensor trends to make a warn engine idle rough all the time, it keeps the ecm in open loop using more fuel and causing the engine to idle rough on the rich mixture. It's a possibility that yours is bad. It also sounds like you may have a slow leaking injector. Child be a handful of things, get the codes scanned and see what comes up if anything.

1 out of 1 people think this is helpful.
robj7480
0

Will do John, thank you.

Your Answer

Add photo

Related Questions

  • What would cause the RPM to run high in my 2001 Saturn L200? 1 answer

    When I press on the gas to go the RPM go up but the car boggles down?

    2001 Saturn L-Series 4 Dr L200 Sedan

    -

    Maintenance & Repair

  • engine rpm to high 3 answers

    i have a saturn 2001 dual overhead cams .when motoring down the road i pull foot off of gas car continues to pull it self down the road, when i get to stop light i put trans. in nuetral engine goes to...

    2001 Saturn L-Series

    -

    Maintenance & Repair

  • top speed 1 answer

    ok i have a 2000 Saturn lw200. when in park/neutral the rev is limited to 4000 rpm. I do not want this. How do i remove the rev limiter, or is this done by the computer. Also how do i remove my re-str...

    2000 Saturn L-Series 4 Dr LW2 Wagon

    -

    Car Customization

  • RPM too high,please help 1 answer

    I have request before earlier in the year about the car running so high on my 99 Saturn with a 5 speed manul transmission .,, When the car first starts up , the RPM idles up to around 18,000 , which t...

    1999 Saturn S-Series 3 Dr SC1 Coupe

    -

    Maintenance & Repair

  • what would a bad map sensor do to a 02 saturn sl five speed 3 answers

    my car wont go over 4,000 rpm

    2002 Saturn S-Series 4 Dr SL Sedan

    -

    Maintenance & Repair

L-Series
Looking for a Used L-Series in your area?
CarGurus has 826 nationwide L-Series listings starting at $1,000.
ZIP:

Search Saturn L-Series Questions

Saturn L-Series Experts

#1 Ephram Rubin
Ephram Rubin
Reputation 650
#2 Tom Demyan
Tom Demyan
Reputation 210
#3 John Saffrahn
John Saffrahn
Reputation 110
View All

Related Models For Sale

Used Saturn S-Series"
4 Great Deals out of 1,255 listings starting at $950
Used Honda Civic"
808 Great Deals out of 56,238 listings starting at $995
Used Toyota Camry"
1,546 Great Deals out of 69,565 listings starting at $1,395
Used Honda Accord"
1,213 Great Deals out of 64,489 listings starting at $1,089.41
Used Ford Focus"
1,724 Great Deals out of 62,526 listings starting at $1,400
Used Pontiac Grand Am"
56 Great Deals out of 2,453 listings starting at $1,200
Used Pontiac Sunfire"
12 Great Deals out of 739 listings starting at $1,995
Used Chevrolet Impala"
1,629 Great Deals out of 57,675 listings starting at $990
Used Nissan Altima"
1,513 Great Deals out of 79,443 listings starting at $1,495
Used Toyota Corolla"
1,146 Great Deals out of 53,640 listings starting at $995

Used Cars For Sale