00' expedition engine dies when braking
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Joined: Dec 2005
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00' expedition engine dies when braking
Hey ya'll, I got a question about my 2000 Expedition. I bought it new off the lot and have had no major problems with the car. However these past couple years its developed a nasty, but sporadic habit of dying when braking. There seems to be no cause for it, but a couple times a month ill be driving and when approaching a stoplight/sign it will rough idle for a brief second then die. Ive changed the fuel filter, this seemed to have helped, but it soon started up again. Other times it will suffer a drop in rpm's and then return to normal after a few seconds. It only happens when the speed is low, and your just about stopped, also this effect is worsend by how abrupt the braking is. The harder the stop the faster it will die. Any suggestions would be appreciated, Thanks.
Senior User
Joined: Mar 2005
Posts: 141
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From: Pullman Washington
I would run codes on it and see what you come up with. It could be a bad Torque Converter Control (TCC) solenoid. Not an uncommon problem on any vehicle.
Just a guess talored to your described scenario.
Brad
Just a guess talored to your described scenario.
Brad
Senior User
Joined: Nov 2003
Posts: 467
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From: Where the war is...
What about the IAC? Mine did the same thing until I changed it according to other posts I had seen. The original IAC was completely caked up with carbon. Its a pain to get to in back of the engine, on top of the intake. Worked for me.
Logistics Pro
Joined: Oct 2000
Posts: 3,960
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From: All over Texas
My '98 Merc Mountaineer did that from the very beginning but didn't ever throw a code. I took it back half a dozen times or so and the techs couldn't ever pinpoint the problem. I know this doesn't help much, but just a fyi that the problem can be elusive, especially if no codes are present.
Senior User
Joined: Oct 2002
Posts: 147
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From: Staten Island
I have the same problem, but it doesnt happen all the time, that happened to me like 4 times. I was told it is the torque converter locking up. This week I am draining the atf from the trans and torque converter and put mobile one in and see what happens.
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New User
Joined: Apr 2003
Posts: 17
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From: Baton Rouge, LA
Had same problemand changed IAC valve and problem solved. I also treated gas with B12 Chemtool in the tank and through the intake line connected to brake booster. This procedure smoothed it right out.
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Junior User
Joined: Jul 2002
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From: Newburgh, IN
Same problem here, almost exactly. Have replaced IAC. Still does it. Had a Ford mechanic tell me that it is probably the crankshaft position sensor. From what I have read about those acting up, the truck usually does not start, not a low idle, and dying problem. Is there a test for the CPS when the truck is running?
Fleet Owner
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From: 0,0,1
The baffles are like one-way valves (flaps). They allow fuel to flow towards the pump, but close when fuel tries to flow away from it.
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[QUOTE=vze2sgxa;4000872]What about the IAC? Mine did the same thing until I changed it according to other posts I had seen. The original IAC was completely caked up with carbon. Its a pain to get to in back of the engine, on top of the intake. Worked for
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Rex
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