2001 Ford Taurus (Rough Idle, Surge) - Taurus Car Club of America : Ford Taurus Forum

DaveMerl04 · 04-03-2011, 12:03 AM

2001 3.0 V6 Taurus. Problem is when I first start the car up in the morning, or anytime the engine has completely cooled down, and I shift into gear whether it be drive or reverse it surges without touching the accelerator pedal. Once the engine warms up the surge disappears. It also has a rough idle while stopped in drive. Other than that the car performs flawlessly on the highway at highway speed. Acceleration is not affected. I was thinking maybe a Differential Pressure Feedback EGR, or and EGR valve or IAC Valve. Any possible solutions?

Bull Geek · 04-03-2011, 08:45 AM

Any check engine lights on?

Blake24j.gorden · 04-03-2011, 09:36 AM

i had the same problem my egr valve was bad if you can take it off and have it checked at your local auto parts store and also put a new gasket on it

DaveMerl04 · 04-03-2011, 10:07 AM

I replaced the Differential Pressure feedback Sensor, the one right next to the EGR Valve and that seems to have taken away the rough idle when its hot and in drive. Currently letting the car cool down so I can see if the surge is still there.

DaveMerl04 · 04-03-2011, 10:08 AM

And there are no check engine lights

sheila · 04-03-2011, 01:28 PM

Sounds like a sticking (dirty) iac and/or vacuum leak(s). Next time the idle surges, tap the iac with the handle end of a screwdriver and see if it normalizes. If so, might remove it and try cleaning it up with throttle body or brake cleaner spray before purchasing a new one. If rough idle returns, i would start searching for vacuum leaks.

DaveMerl04 · 04-03-2011, 09:26 PM

It does not surge when idling, only after I put it into gear, it will be like that for a few minutes until the engine warms up. And the rough idle is back after I put the DPFE sensor in. Not as bad, but here and there I will notice it. So maybe it was a part of the problem but not the whole thing. So maybe an EGR valve? I am leaning away from it being an IAC, I looked up some symptoms and really only one of them matches. I have the EGR valve for it, just debating putting it in

sheila · 04-03-2011, 10:58 PM

You can test the egr valve by removing its vacuum line at idle and replacing it with a piece of scrap sampling hose. Suck on sampling hose opening valve and egr flow to the manifold. Engine should stumble or stall verifying valve is operating properly. Remember, there should be no egr flow at idle or wot (wide open throttle). Why did you change out the dpfe sensor? Were you getting a po401 code? A faulty one should not affect idle or cause the surge youre describing.

claybank01 · 04-04-2011, 07:03 AM

I would put the IAC valve on.....its easy not a lot of money and it will do strange things with the idle if its not working right. Ford did have a lot of issues with these on the taurus and other vehicles

DaveMerl04 · 04-05-2011, 08:03 PM

New IAC valve, runs great

Thanks everyone

04-03-2011, 12:03 AM	#1 (permalink)
DaveMerl04 Junior Member Member Number: 35473 Join Date: Apr 2011 Chapter: Northeast Drives: 2001 Ford Taurus OHV Vin (U) 3.0 V6 Visit: My Garage Posts: 11 Trader Score: 0 reviews Rep Power: 0	2001 Ford Taurus (Rough Idle, Surge) 2001 3.0 V6 Taurus. Problem is when I first start the car up in the morning, or anytime the engine has completely cooled down, and I shift into gear whether it be drive or reverse it surges without touching the accelerator pedal. Once the engine warms up the surge disappears. It also has a rough idle while stopped in drive. Other than that the car performs flawlessly on the highway at highway speed. Acceleration is not affected. I was thinking maybe a Differential Pressure Feedback EGR, or and EGR valve or IAC Valve. Any possible solutions?

04-03-2011, 08:45 AM	#2 (permalink)
Bull Geek Technical Advisor Member Number: 1771 Join Date: Oct 2003 Location: Blythewood, SC 29016 Chapter: Southeast Drives: 87 GL Wagon, 97 SHO Sedan, 00 SEL Sedan Visit: My Garage Posts: 15,591 Trader Score: 6 reviews Rep Power: 10	Any check engine lights on? __________________ --Nick M. \| Blythewood, SC \| AAP/Atlanta Built Bulls --Silver MC 2000 Ford Taurus SEL \| DOHC/AX4N \| 184K --Toreador Red MC 1997 Ford Taurus SHO \| DOHC/AX4N \| 149K --Wood paneled 1991 Mercury Grand Marquis LS Colony Park wagon \| OHV/AOD \| 180K ish? Sold.... --Driftwood MC 1987 Ford Taurus GL Wagon \| OHV/AXOD \| 254K Scrapped... --Sand Beige 1987 Ford Taurus GL \|197K \| OHV/AXOD

04-03-2011, 01:28 PM	#6 (permalink)
sheila Crazy Devoted Member Member Number: 10865 Join Date: Dec 2006 Visit: My Garage Posts: 8,816 Trader Score: 1 reviews Rep Power: 21	Sounds like a sticking (dirty) iac and/or vacuum leak(s). Next time the idle surges, tap the iac with the handle end of a screwdriver and see if it normalizes. If so, might remove it and try cleaning it up with throttle body or brake cleaner spray before purchasing a new one. If rough idle returns, i would start searching for vacuum leaks. Last edited by sheila; 04-03-2011 at 01:34 PM.

04-03-2011, 09:26 PM	#7 (permalink)
DaveMerl04 Junior Member Member Number: 35473 Join Date: Apr 2011 Chapter: Northeast Drives: 2001 Ford Taurus OHV Vin (U) 3.0 V6 Visit: My Garage Posts: 11 Trader Score: 0 reviews Rep Power: 0	It does not surge when idling, only after I put it into gear, it will be like that for a few minutes until the engine warms up. And the rough idle is back after I put the DPFE sensor in. Not as bad, but here and there I will notice it. So maybe it was a part of the problem but not the whole thing. So maybe an EGR valve? I am leaning away from it being an IAC, I looked up some symptoms and really only one of them matches. I have the EGR valve for it, just debating putting it in Last edited by DaveMerl04; 04-03-2011 at 09:29 PM.

04-03-2011, 09:36 AM	#3 (permalink)
Blake24j.gorden Junior Member Member Number: 35477 Join Date: Apr 2011 Location: Ohio Chapter: Northeast Drives: 2002 taurus ses 3.0L OHV Visit: My Garage Posts: 10 Trader Score: 0 reviews Rep Power: 0	i had the same problem my egr valve was bad if you can take it off and have it checked at your local auto parts store and also put a new gasket on it

04-03-2011, 10:07 AM	#4 (permalink)
DaveMerl04 Junior Member Member Number: 35473 Join Date: Apr 2011 Chapter: Northeast Drives: 2001 Ford Taurus OHV Vin (U) 3.0 V6 Visit: My Garage Posts: 11 Trader Score: 0 reviews Rep Power: 0	I replaced the Differential Pressure feedback Sensor, the one right next to the EGR Valve and that seems to have taken away the rough idle when its hot and in drive. Currently letting the car cool down so I can see if the surge is still there.

04-03-2011, 10:08 AM	#5 (permalink)
DaveMerl04 Junior Member Member Number: 35473 Join Date: Apr 2011 Chapter: Northeast Drives: 2001 Ford Taurus OHV Vin (U) 3.0 V6 Visit: My Garage Posts: 11 Trader Score: 0 reviews Rep Power: 0	And there are no check engine lights

04-03-2011, 10:58 PM	#8 (permalink)
sheila Crazy Devoted Member Member Number: 10865 Join Date: Dec 2006 Visit: My Garage Posts: 8,816 Trader Score: 1 reviews Rep Power: 21	You can test the egr valve by removing its vacuum line at idle and replacing it with a piece of scrap sampling hose. Suck on sampling hose opening valve and egr flow to the manifold. Engine should stumble or stall verifying valve is operating properly. Remember, there should be no egr flow at idle or wot (wide open throttle). Why did you change out the dpfe sensor? Were you getting a po401 code? A faulty one should not affect idle or cause the surge youre describing.

04-04-2011, 07:03 AM	#9 (permalink)
claybank01 Junior Member Member Number: 35320 Join Date: Mar 2011 Chapter: Northeast Drives: 2003 Taurus Ses 3.0 OHV Visit: My Garage Posts: 14 Trader Score: 0 reviews Rep Power: 0	I would put the IAC valve on.....its easy not a lot of money and it will do strange things with the idle if its not working right. Ford did have a lot of issues with these on the taurus and other vehicles

04-05-2011, 08:03 PM	#10 (permalink)
DaveMerl04 Junior Member Member Number: 35473 Join Date: Apr 2011 Chapter: Northeast Drives: 2001 Ford Taurus OHV Vin (U) 3.0 V6 Visit: My Garage Posts: 11 Trader Score: 0 reviews Rep Power: 0	New IAC valve, runs great Thanks everyone

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