93 flooding
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Joined: Mar 2009
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93 flooding
my daughters 1993 twin cam 4 door saturn is flooding so bad it fouls plugs when you crank it.The check engine light isn't on and theres no codes.It runs o.k. most the time but has some idleing problems,any ideas?thanks
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Joined: Jul 2008
Posts: 2,748
From: Riveria of America
Unusual occurrance -- flooding without a code being set, but oh well --
I would personally replace the Engine Coolant Temperature Sensor (ECTS) and it's associated electrical connector. About $40usd in parts (the connector is OEM). The sensor is a multi-wire sensor, located on the driver's side of the engine, just below where the water hose for the radiator is located.
When you buy the new sensor, make sure it has the brass enclosed tip. Use Teflon tape on the threads to get a good seal, and work only on a cold engine - thus avoiding burns and scalds. Do not over-torque the sensor.
I would personally replace the Engine Coolant Temperature Sensor (ECTS) and it's associated electrical connector. About $40usd in parts (the connector is OEM). The sensor is a multi-wire sensor, located on the driver's side of the engine, just below where the water hose for the radiator is located.
When you buy the new sensor, make sure it has the brass enclosed tip. Use Teflon tape on the threads to get a good seal, and work only on a cold engine - thus avoiding burns and scalds. Do not over-torque the sensor.
Banned
Joined: Jul 2009
Posts: 14
From: Niagara Falls, NY
I don't know if I totally agree with OceanArcher but I could be wrong. I personally would try to disconnect the Sensor first to see if the fan turns on. On a lot of vehicles when you disconnect the sensor (open) it automatically triggers the electric fan on the radiator to turn on, to safe guard against overheating. The sensors are either good or they are bad. But on the other hand the PCM does change the fuel map acording to the temp of the engine. I would lean more towards the IAT which tells the pcm the temp of the incomming air. As the incomming air gets cooler the PCM adds more fuel. Cooler air = denser air which = more fuel in the mixture which = bigger boom in the cylinders.
Banned
Joined: Jul 2008
Posts: 2,748
From: Riveria of America
TW -- a great explaination, but slightly off-base ...
SATURN in it's infinite(?) wisdom, utilizes a sensor that decreases in resistance as the temperature builds - assuming that a shorted wire or device will cause the fan to run all the time. From the description of the problem, however, I suspect the exact opposite has occurred here, and either the sensor has gone open, or the wiring to it has failed (hence my suggestion to replace the connector at the same time).
Since the system thinks the engine is cold, cold, the PCM is adding more fuel than necessary, resulting in poor performance and fouled plugs.....
SATURN in it's infinite(?) wisdom, utilizes a sensor that decreases in resistance as the temperature builds - assuming that a shorted wire or device will cause the fan to run all the time. From the description of the problem, however, I suspect the exact opposite has occurred here, and either the sensor has gone open, or the wiring to it has failed (hence my suggestion to replace the connector at the same time).
Since the system thinks the engine is cold, cold, the PCM is adding more fuel than necessary, resulting in poor performance and fouled plugs.....
Banned
Joined: Jul 2009
Posts: 14
From: Niagara Falls, NY
TW -- a great explaination, but slightly off-base ...
SATURN in it's infinite(?) wisdom, utilizes a sensor that decreases in resistance as the temperature builds - assuming that a shorted wire or device will cause the fan to run all the time. From the description of the problem, however, I suspect the exact opposite has occurred here, and either the sensor has gone open, or the wiring to it has failed (hence my suggestion to replace the connector at the same time).
Since the system thinks the engine is cold, cold, the PCM is adding more fuel than necessary, resulting in poor performance and fouled plugs.....
SATURN in it's infinite(?) wisdom, utilizes a sensor that decreases in resistance as the temperature builds - assuming that a shorted wire or device will cause the fan to run all the time. From the description of the problem, however, I suspect the exact opposite has occurred here, and either the sensor has gone open, or the wiring to it has failed (hence my suggestion to replace the connector at the same time).
Since the system thinks the engine is cold, cold, the PCM is adding more fuel than necessary, resulting in poor performance and fouled plugs.....
Didn't mean to step on any toes. I am trying to relate My (dodge) non OBDII cars to a different make (saturn) Non OBDII.
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We're all here to help each other; new points of view should always be considered--that's how we all learn something new....
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We're all here to help each other; new points of view should always be considered--that's how we all learn something new....
no harm no foul