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Old 10-14-2019, 01:08 PM   #21
Waiex191
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1999 SL2
1998 SC2
Default Re: 99 Saturn SL2 engine hesitation, now wonít start

Does the harness look ok? On my 98 it was all corroded.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 10-14-2019, 01:12 PM   #22
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Default Re: 99 Saturn SL2 engine hesitation, now wonít start

Check this out:
http://www.saturnfans.com/forums/sho...&postcount=128

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Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 10-14-2019, 01:22 PM   #23
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Default Re: 99 Saturn SL2 engine hesitation, now wonít start

Quote:
Originally Posted by ForceEdge View Post
Popped it out and car still struggles hard. Car stalls a couple seconds after sitting in park. Have to give gas for it to stat started.

After pulling out service engine light came on
Quote:
Originally Posted by Waiex191 View Post


Okay weirdest thing just started the car again, ran it, drove it a few 100 feet. Car is running perfectly fine now...

I donít know what the heck is going on but car is purring fine and no hesitation.

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Old 10-14-2019, 01:27 PM   #24
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Default Re: 99 Saturn SL2 engine hesitation, now wonít start

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Okay weirdest thing just started the car again, ran it, drove it a few 100 feet. Car is running perfectly fine now...

I donít know what the heck is going on but car is purring fine and no hesitation.
Okay I noticed a lot of white smoke coming out of exhaust when I just pulled off to try and test it again. Cars running fine.

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Old 10-14-2019, 04:53 PM   #25
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Default Re: 99 Saturn SL2 engine hesitation, now wonít start

The white smoke, if it isn't a blown head gasket, would normally be first startup and humidity creating steam until the engine warms up. The steam is from overnight condensation settling in the exhaust system. After starting up, exhaust heat begins to heat up condensation and steam comes out the exhaust pipe. We see this during winter driving, less so in summer weather but under humid conditions exhaust steam will come out until the engine's fully warmed up and the exhaust system is too hot to touch. A blown head gasket will make coolant chocolate and motor oil milky with droplets on the dipstick.

How many miles on this engine? Plugs replaced recently? The video seems to show misfiring which can be from a list of things; worn plugs, corroded ignition coils intermittently sparking, plug wires worn to where arcing occurs (seen better at night), lost compression, fuel filter blocking fuel flow, worn out fuel pump, etc.

The check engine light may be from the disconnected intake air temperature sensor. Did you connect the coolant sensor connector to the intake air temperature sensor as suggested, leaving the sensor dangling for the startup test?

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