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OT-car

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tlak

07-30-2004 10:31:50




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Got a 91 cutlass supreme 3.1 engine injected FWD. If you stomp on or kick into passing gear it leaves a black cloud of smoke behind it like running too rich. I checked the air system, clear and the trottle flap appears to open all the way and working proper. So any ideals?




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Tommy D6-8U

07-31-2004 13:11:40




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
TLAK,

Some may disagree but I suspect there is not much wrong with your sensors and stuff. Install a new thermostat to insure the engine is running at the correct temperature. This is a common item overlooked during troubleshooting ECM controlled vehicles. If the ECM sees low coolant temps, it will call for more fuel; your problem has low coolant temp written all over it from my experience. Get the engine temp right before you start troubleshooting.

Tommy

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Travis

07-30-2004 21:36:51




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
Check your Fuel Pressure regulator--it is located right under the upper intake manifold on the left(drivers)side of the engine. There will be a vacuum line going to it and while the car is running pull it off and see if any gas is coming out of it--there shouldn't be. If this is it it usually will start hard and run poorly, but may be just starting to go bad. Runs about $166 from your local GM dealer. Other than that I would guess the TP(throttle position) sensor or maybe an 02 sensor.

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redrock

07-30-2004 19:20:21




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
Could be the temp SENSOR not working properly and not letting the ECM go into closed loop. It is located just under the thermostat housing. If you do not have a check engine light on this may be the problem. Also check any fuses labeled ECM.



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RT

07-30-2004 19:16:34




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
tlak, Vern is right! I do belive there is a air/fuel mixture sensor that is part of that too. Its probably one of the two. If you have a good service manual there should be a section in there that tells the location and how to test the sensor. You`ll need a good ohm meter. Hope this helps out, RT



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Vern-MI

07-30-2004 18:57:40




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
The fuel injection system enrichment is controlled by the engine control module (ECM)Which recieves input from the engine coolant temperature sensor. Since it is obviously running a bit rich I would susprct that the engine temperature sensor is faulty and telling the ECM that the engine is cold and needs more fuel until it warms up even though it is already warmed up. There may be more than one sensor. It appears that it will cost about $9 at the local Autozone if you have one nearby. Hope this helps.

ENGINE TEMPERATURE SENSOR COOLANT TEMPERATURE SENSOR for a 1991 OLDSMOBILE CUTLASS SUPREME


Item Part
No. Warranty Core Value Unit
Price Availability Store Web WELLS SU109 3 MO $8.99 TO TEST->LOCATE TEST CHART "SU12" IN WELLS TEST MANUAL

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Ruthanne D. Gerbasi

07-30-2004 16:05:00




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 Ford 800 1956 tractor in reply to tlak, 07-30-2004 10:31:50  
Dear Sir,

I cannot find the website to search for this price. My friend wants to sell Ford 800 1956 tractor. it is good condition but it does not look like brand new. They had been using it on farm. I need to know the cost to sell? Could you help me to find out ?

Thank you, Ruthanne D. Gerbasi



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Jim.UT

07-31-2004 10:15:31




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 Re: Ford 800 1956 tractor in reply to Ruthanne D. Gerbasi, 07-30-2004 16:05:00  
Price will depend on which 800 it is. The 850 does not have live pto, the 860 does. Therefore a good running 860 is usually worth more than an 850 in the same condition. The link below will help you figure out which you have.

I bought my 850 in '99 (same description as yours...good running tractor that doesn't look like new) for $2500. If I had the money I'd be willing to pay $3500 for an 860 in similar condition.

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steveormary

07-31-2004 09:19:30




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 Re: Ford 800 1956 tractor in reply to Ruthanne D. Gerbasi, 07-30-2004 16:05:00  
Ruthanne;

Dont know what they would bring now. Sold one at a consignment auction some years back and it brought $2200+ It needed rings,valves and tires.



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RAB

07-30-2004 14:04:28




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
You are probably right, it is running too rich. What colour is the exhaust outlet after a good run?
Check plugs for a better diagnosis, or get it serviced.
Regards, RAB



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VADAVE

07-30-2004 12:11:52




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
If you don't stomp on it much what you can get is carbon that has built up.
One good thing it's not oil.



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tlak

07-30-2004 14:00:20




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 Re: OT-car in reply to VADAVE, 07-30-2004 12:11:52  
I thought of that and have put fuel cleaner and changed the oil regular since Ive had the car but we're only getting about 16 mpg which I figure should be more like 20 mpg for this type of car.



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O2

07-30-2004 19:21:19




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 Re: OT-car in reply to tlak, 07-30-2004 14:00:20  
Besides the coolant temp sensor you may need to check the Oxygen sensor too. When they start going bad you'll see a drop in MPG AND they don't always give a "Check Engine" light or code. I agree with the carbon buidup also. Depending on miles your cat. converter "may" be plugging up. It's always something!



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Vern-MI

07-31-2004 17:06:22




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 Re: OT-car in reply to O2, 07-30-2004 19:21:19  
Sensors operate in a typical 1 to 5 volt range. In order for the trouble light to come on a sensor has to "go out of voltage range" or in other words less than 1 volt or more than 5 volts. If they are stuck and don't go out of the voltge range the light won't come on.

I did like Tommy's suggestion of replacing the thermostat however.



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Indydirtfarmer

07-30-2004 10:40:30




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 Re: OT-car in reply to tlak, 07-30-2004 10:31:50  
Uh, don't stomp on it?



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