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Old 06-26-2012, 11:07 AM   #1
mikewire
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Default Hard starting SW2...

Hi all - this is my first post here, but I'm not new to cars, but maybe a bit green when it comes to Saturns. I used to have a '94 SL2 about 8 years ago (looking to pick up another SL2 or SC2) but now most of my work is on VW and Audi. So I know cars, wrench a lot, but need a little help here.

Anyway, I have my sister-in-laws 1998 SW2 automatic in for service in my garage after dealing with a no start issue. I got it to start by holding the pedal down and drove it to my house.

I found the plugs were way out of spec (at least .080) and oil needed changed, so I grabbed some NGK's, filter and oil and changed them out last night.

I got it to start (cold motor), but it stumbled at first, held the pedal and it fired up and then started to run properly. If I blipped the throttle, it would want to die, then it would recover and rev fine. I noted in P that the idle was a bit high, at around 1K RPM's, in D, it dropped to 800 or so.

After cleaning the filthy throttle body, it's better, but still doing the same thing.

So, doing bit of searching it seems like a sensor of some sort. What I don't know - is it IAT, EGR, or something else? I don't have a generic ODB2 scanner, so I don't have codes, but I can pick one up.

Thoughts? Anything else I can do?

Last edited by mikewire; 06-26-2012 at 11:13 AM..

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Old 06-26-2012, 11:58 AM   #2
hoseppi
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Default Re: Hard starting SW2...

The ECTS/connector would be a good place to start. That is the most problematic area on these cars. Normally, a defective one won't even trigger the SES light.

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Old 06-26-2012, 01:15 PM   #3
mikewire
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Default Re: Hard starting SW2...

Quote:
Originally Posted by hoseppi View Post
The ECTS/connector would be a good place to start. That is the most problematic area on these cars. Normally, a defective one won't even trigger the SES light.
Nice! Sounds like a great place to start looking. I'm assuming that's a coolant temp sensor? Not the sensor itself, but the connector? Can you point me in the direction of where it would be on the DOHC?

EDIT: NVM, I did some Googling and I found it.

Last edited by mikewire; 06-26-2012 at 01:23 PM..

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Old 06-26-2012, 01:45 PM   #4
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Default Re: Hard starting SW2...

after switching out the ects, i would check the fuel pressure and look for a vacuum leak by spraying around the intake with brake cleaner.

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Old 06-26-2012, 01:58 PM   #5
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Default Re: Hard starting SW2...

check ects. if its the resin tip kind replace if its metal go on oldnucs pictures and look up the ohms at what temp and see if its reading correctly with a multimeter. if thats good i would check iac and see if there is any trouble codes.

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Old 07-03-2012, 02:41 AM   #6
mikewire
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Default Re: Hard starting SW2...

Wanted to say thanks guys, I have it all fixed up. It was definitely the ECTS!

Purchased a new sensor at Napa today for $13.95 and installed in about 10 minutes and the car starts and runs perfectly now.


Now I have a puzzler on an SL2 I am looking at on CraigsList...onto post another thread with pictures.

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Old 07-03-2012, 01:07 PM   #7
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Default Re: Hard starting SW2...

Excellent. BTW: Its a myth that you need to drain the coolant to change the ECTS. You only loose about a teaspoon of fluid during the swap.

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