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#12
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Saturn 95 sc2, idle dies on me..
No. Use Throttle Body cleaner, a toothbrush, and a soft clean rag.
Throttle Body cleaner works much better than ordinary carb or fuel injector cleaner. Bob "JaY" > wrote in message ps.com... BläBlä wrote: > In article .com>, > says... > > > > BläBlä wrote: > > > In article . com>, > > > says... > > > > When i drive my sc2 the idle goes from 1000rpm down to dead stop, > > > > expecially when i give it more gas then usall and stoping at a > > > > light. I > > > > changed the idle control valve, but no luck. Any suggestions??>? > > > > > > > > > When cold or only after its warmed up? > > > > > > EGR or ECT sensor or Fuel pressure. Diagnosing beats replacing. > > > > when warmed up, is there anyway to check the egr valve..... i looked up > > EGR vavle may not be able to close. Clean out any carbon buildup. > > > the ect sensor but could not find one. anything else it might be called > > Engine Coolant Temp Sensor. 95 was a change over year, you may have 2. > > http://www.autoglossary.com/ Should i claen it with carb cleaner? |
#13
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Saturn 95 sc2, idle dies on me..
"wavy" > wrote in message ps.com... What you said about 95 being a changeover leaves me scratching my head... The only way to tell the engines in my 94 and 95 apart is the way the air intake routes into the air filter box and the difference in the EGR - in 95 the EGR became directly electronically controled rather than the vacuum diaphram actuator. They both have the same temperature sensors in the same places with the same wiring configuration. Did the 95 begin using two O2 sensors? (I havent been down there long enough under the 95 to notice if there was a downstream post-cat-converter O2 sensor). There were TWO coolant temperature sensors on Pre-1996 vehicles and only one in Post-1995 vehciles. One sensor went to the dashboard gauge, whiel the other went to the computer. Thus it was possible to have the gauge read accurately while the fuel misture was enriched for a cold engine, EVEN THOUGH IT WAS WARM. Hope this makes what was said more clear. Bob |
#14
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Saturn 95 sc2, idle dies on me..
You're telling me something I knew already, Bob. :-)
I'm the temperature sensor KING, yo! (I know more about the temperature sensors on 1994 Saturns than anything else - which I admit really aint that much) Blau Blau said 95 was a changeover year. Not being a mechanic I guess I misunderstood what a changeover year is. I would have thought *96* was the changeover year if they went to a single temperature sensor configuration in 1996. I discovered all by my little self what the function of each sensor was .. I even went as far as to build a connector so that I could hook up to a digital ohm meter and measure the resistance "live" while connected to the vehicle. Blau - Open Or High = infinate resistance or very high resistance in the range of Megohms. I've not seen one fail "shorted". If you were to short out the sensor, would the engine think its impossibly hot? Why not? The firmware apparently does not invalidate unlikely input! That is where I got the idea that it might be "shorted". The sensors I've seen go bad read such high resistance - leather would be a better conductor. And when the ECM sees 10 or 50 megohms resistance at the CTS does it think it's impossibly cold or does it consider the reading invalid? It apparently does the former. On a hot day the over-rich mixture doesnt kill the engine, it makes it idle fast. I dont understand exactly why, but it does. Mine did. Lets just say I'm completely wrong and you are correct. Mine are the only ones produced that do this. Out of a million Saturns, my two are the only ones that idle fast when the sensor is bad or high (or open - like when you DISCONNECT it) and everyone else's is different, I guess. ****, I missed the Twilight Zone... Bob Shuman wrote: > "wavy" > wrote in message > ps.com... > What you said about 95 being a changeover leaves me scratching my > head... The only way to tell the engines in my 94 and 95 apart is the > way the air intake routes into the air filter box and the difference in > the EGR - in 95 the EGR became directly electronically controled rather > than the vacuum diaphram actuator. They both have the same temperature > sensors in the same places with the same wiring configuration. Did the > 95 begin using two O2 sensors? (I havent been down there long enough > under the 95 to notice if there was a downstream post-cat-converter O2 > sensor). > > There were TWO coolant temperature sensors on Pre-1996 vehicles and only one > in Post-1995 vehciles. One sensor went to the dashboard gauge, whiel the > other went to the computer. Thus it was possible to have the gauge read > accurately while the fuel misture was enriched for a cold engine, EVEN > THOUGH IT WAS WARM. > > Hope this makes what was said more clear. > > Bob |
#15
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Saturn 95 sc2, idle dies on me..
BläBlä, sorry about the wrong spelling. I dont know how to make an
"a" with umglots... If it makes you happy I'll cut & past it. > BTW it is Bla or Blah, not Blau. > Oh - where is high or open? Its past the top of the page, WAY beyond 16,181 ohms... > 16,180ohms = 14deg > ???..snip > 3,520ohms = 68deg > ???..snip > 177ohms = 212deg > Where's high or open? > > |
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