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1998 Mercury Sable WON'T START WITHOUT HITTING THE GAS

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Posted at Fri Jul 18, 2008 9:34 pm
By pudmunkin, Have Donated
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Engine Mechanical problem
1998 Mercury Sable 6 cyl Front Wheel Drive Automatic
----------------------------------------------------------------
My car doesn't want to start and run without me sitting there holding the gas pedal down for a while until it warms. After the car is warmed up, it'll start and run fine the rest of the day, or at least until it has sat a few hours again. I changed the spark plugs and wires, but it didn't help.
 
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Posted at Fri Jul 18, 2008 9:34 pm
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Posted at Sat Jul 19, 2008 10:12 pm
By KHLow2008, Moderator
Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1 (259) Give Feedback | Votes: 12
   
Hi pudmunkin,

Thanks for the donation.

When you don't use the accelerator to start, does it start and stall or just won't start at all? If it starts and cannot idle, the cold start control system is fauty.

If you use the gas pedal, is it easy to start?
 
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Posted at Wed Jul 23, 2008 8:10 pm
By pudmunkin, Have Donated
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It won't start at all without hitting the gas and maintaining it. Starts easily as long as there is a pressure on the pedal.
 
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Posted at Wed Jul 30, 2008 3:40 am
By KHLow2008, Moderator
Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1 (259) Give Feedback | Votes: 12
   
Hi pudmunkin,

Sorry for the late reply.

Is the MIL ( Check Engine Light ) showing when engine is running?

I would recommend checking the Throttle Position and Mass Air Flow sensors.
 
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Posted at Wed Jul 30, 2008 9:20 pm
By pudmunkin, Have Donated
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Yes, the check engine light is on. Got a code check done at the shop, and was told it was the temp sensor. Changed that, but no improvement.
 
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Posted at Wed Jul 30, 2008 10:17 pm
By KHLow2008, Moderator
Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1Reputation: 259.1 (259) Give Feedback | Votes: 12
   
Hi pudmunkin,

After replacement of temp sensor, did the CEL still come on?

Try calibrating the TPS.
 
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