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1998 Mercury Sable WON'T START WITHOUT HITTING THE GAS

Tiny
PUDMUNKIN
  • MEMBER
  • 1998 MERCURY SABLE
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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Saturday, July 19th, 2008 AT 12:34 AM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
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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Sunday, July 20th, 2008 AT 1:12 AM
Tiny
PUDMUNKIN
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  • 3 POSTS
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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Wednesday, July 23rd, 2008 AT 11:10 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
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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Wednesday, July 30th, 2008 AT 6:40 AM
Tiny
PUDMUNKIN
  • MEMBER
  • 3 POSTS
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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Thursday, July 31st, 2008 AT 12:20 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi pudmunkin,

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

Try calibrating the TPS.
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Thursday, July 31st, 2008 AT 1:17 AM

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