Where do I begin-codes? - Taurus Car Club of America : Ford Taurus Forum
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post #1 of 25 (permalink) Old 03-31-2019, 06:22 AM Thread Starter
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Join Date: Mar 2011
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Year: 2001
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Where do I begin-codes?

2001 SEL with Duratec, about 156,000 miles. Check engine light is on and the gas/fuel system light is on.



Two weeks ago I drove the car and it started fine, but moments later while stopped at an intersection the engine started shuddering as though it was about to stall. I shifted to neutral and revved the engine a little and it stayed running. This continued for about 10-15 minutes, then drove on the highway for about 20 minutes and all seemed fine. Drove the car around town yesterday and it ran perfectly in all respects.



Six codes read yesterday; (I see what they are, but don't know what to do about them.)

The EGR and EEC codes have been there for over a year. I was told initially to replace the gas cap, and have done so with a new Ford cap.



P1000


P1131 - lack of HO2 sensor, indicates lean
P1506 - idle air control overspeed error


P0401 - EGR flow insufficient
P0455 - evaporative emission control leak (gross leak)


P0303 - #3 cylinder misfire


I could sure use some constructive directions...
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post #2 of 25 (permalink) Old 03-31-2019, 07:57 AM
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Quote:
Originally Posted by 60DRB View Post
2001 SEL with Duratec, about 156,000 miles. Check engine light is on and the gas/fuel system light is on.



Two weeks ago I drove the car and it started fine, but moments later while stopped at an intersection the engine started shuddering as though it was about to stall. I shifted to neutral and revved the engine a little and it stayed running. This continued for about 10-15 minutes, then drove on the highway for about 20 minutes and all seemed fine. Drove the car around town yesterday and it ran perfectly in all respects.



Six codes read yesterday; (I see what they are, but don't know what to do about them.)

The EGR and EEC codes have been there for over a year. I was told initially to replace the gas cap, and have done so with a new Ford cap.



P1000


P1131 - lack of HO2 sensor, indicates lean
P1506 - idle air control overspeed error


P0401 - EGR flow insufficient
P0455 - evaporative emission control leak (gross leak)


P0303 - #3 cylinder misfire


I could sure use some constructive directions...
Suggest first things first. Misfire will make the cats at risk. Also makes for "false lean" code. I would replace the coil out of routine as they crack and then misfire. Check plugs and plug wires while at it. We could have a "Me Too" group here as this is a very common issue, likely by 100K you have risk with OE part. By 100K your OE plugs are nearing high gap.


-chart-
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post #3 of 25 (permalink) Old 03-31-2019, 08:36 AM
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You may have a decent vacuum leak coming from the evap system piping that is leaning out your mixture. This lean mixture may be causing the misfire but a bad coil, plug wires and plugs would also be a first area to look
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post #4 of 25 (permalink) Old 03-31-2019, 09:05 AM Thread Starter
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Join Date: Mar 2011
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I can certainly replace the coil. Plugs were replaced at 108K and the wires look OK.

This car has been "in the family" since we got it in 2011 with 75K miles. I have been the primary maintainer/records keeper, but not always co-located.

How do I go about tracking down the evap leak[s]? Just looking I don't see anything obvious like breaks or cracks.
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post #5 of 25 (permalink) Old 03-31-2019, 09:44 AM
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Quote:
Originally Posted by 60DRB View Post
I can certainly replace the coil. Plugs were replaced at 108K and the wires look OK.

This car has been "in the family" since we got it in 2011 with 75K miles. I have been the primary maintainer/records keeper, but not always co-located.

How do I go about tracking down the evap leak[s]? Just looking I don't see anything obvious like breaks or cracks.

Evap leaks are difficult to track down. I would read up on the system function by Googling it. A rusted gas filler tube gave me a minor leak and luckily I guessed right and the filler tube looked pretty bad. I had a EVAP code after I replaced a AC accumulator/dryer assembly because I must have jarred the hose coming off the EVAP purge solenoid valve. I figured I was working in that area and must have damaged something. There is piping and stuff on top of the gas tank that is also part of system which you can't see.



The right way to find leaks like this is a smoke test but you also have to cycle the system valves which are controlled by the PCM.
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post #6 of 25 (permalink) Old 03-31-2019, 09:53 AM
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For the p0401, probably need to replace the dpfe (egr pressure sensor). For the p1506, may clean/lube iac sensor and check its wiring/elec. conn.

Last edited by sheila; 03-31-2019 at 09:55 AM.
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post #7 of 25 (permalink) Old 03-31-2019, 10:01 AM Thread Starter
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Hmm. The fuel pump/sending unit was replaced a while before that code popped up. The A/C system was essentially rebuilt by a Ford dealership some time after. I may or may not be able to sort that issue out but I can try.
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post #8 of 25 (permalink) Old 03-31-2019, 10:35 AM Thread Starter
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I’m thinking I’ll replace the coil & wires, the egr sensor and valve, then re-check codes.
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post #9 of 25 (permalink) Old 03-31-2019, 10:42 AM
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^^+1
With Sheila on the DPFE

It's SHO time!


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post #10 of 25 (permalink) Old 03-31-2019, 12:37 PM
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Quote:
Originally Posted by 60DRB View Post
Iím thinking Iíll replace the coil & wires, the egr sensor and valve, then re-check codes.

Hold off on the EGR valve
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