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Two main causes for this on a SL's SW's or SC's are
1) a leaking PCV hose from the valve cover to the intake
2) a faulty coolant sensor ( yellow and black wires) by upper coolant hose
Other possible causes are a leaking intake gasket or throttle body gasket.
Hope this helps-
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∙ 14y ago
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Will Vacuum leak cause high idle on 1992 Saturn SL1 sohc and how do you fix it?
yes. use brake cleaner to find the leak. However replace your ects and clean your throttle body. This is normally the reason for a high idle. ----------------------------------------------------------- THANKS SO MUCH FOR YOUR ANSWER!
What is the difference of 1999 Saturn 1.9l and 1998?
nothing. only if it is a dohc or a sohc.
What causes a 2002 Saturn SL-1 SOHC fast idle in park after driving?
Two of the most common causes are throttle position sensor and idle control valve problems.
Where is the Idle Air Control valve located on a 1998 Ford Explorer 6-Cylinder 4.0L SOHC?
On most models, the Idle Air Control (IAC) valve is located on the throttle body.
How do you place the spark plug wires on a 1998 Saturn so that it fires properly?
in order for that question to be answerd i would need a model # and if it is DOHC or SOHC
Will a 1991 sohc Saturn engine work in a 1994 sohc?
If 8th VIN digit match, then yes
Will a dohc head fit a sohc Saturn motor?
Yes
How do you replace the hydraulic lifters on a 96 Saturn SL?
how to replace lifter saturn 2002 1.9l sohc
How and where do you change the idle speed on a 1993 Mitsubishi Galant SOHC?
The idle speed is factory pre-set, and no adjustment is available. If the idle is too high, or too low, you will be having other problems that will affect the idle. In cooler temperatures, it will take the engine longer to come out of fast idle, as the engine warms up to operating temp. If the idle is too high/stays at a higher than normal idle, then take the thing to get it repaired. Running a car in gear(automatic transmission) with a higher than normal idle, can damage the transmission.
Will a 99 Saturn head fit a 98 Saturn block?
is it DOHC or SOHC 2 overhead cams or 1 if they are the same DOHC or SOHC then yes most years will fit and 99 and 98 will absolutely fit
Will a 1993 saturn 1.9 sohc fit in a 1994 saturn with a dohc?
You would have to change the computer wiring harness etc
What is the emission code P0301 for a 2001 Saturn SL1?
P0301 = miss fire on Cylinder #1 2001 SOHC with a P0301 ---> Bad intake manifold gasket. Spray brake cleaner around the intake manifold gasket during idle. Listen for any changes in the idle. If so, you've found your problem. SOHC in the 3rd gen s-series are notorious for this. rockauto.com has new gaskets for 15 bucks. See saturnspot.com for a how-to
