Late shift into first, high RPMs at start, and no one can figure it out... - Taurus Car Club of America : Ford Taurus Forum
 11Likes
Reply
 
LinkBack Thread Tools
post #1 of 31 (permalink) Old 06-07-2019, 01:02 PM Thread Starter
RJM
Junior Member
 
RJM's Avatar
 
Join Date: Jun 2019
Location: SoCal
Chapter: West Coast
Year: 1999
Model: Ford Taurus
Engine: 3.0L 12v Vulcan V6
Posts: 8
Rep Power: 0
 
Garage
Trader Score: 0 reviews
Unhappy Late shift into first, high RPMs at start, and no one can figure it out...

Hello, everyone, and thanks for the warm welcome!

Just like the introductory forum says, I have used this forum many a time. You folks are a magnificent wealth of knowledge, and I have researched many of your threads to determine what parts to replace, what shocks to use, why these cars do the weird little things they do, and so on.

This story will be a bit long, so I thank you in advance for reading it all!

To begin: I have a 1999 Ford Taurus 3.0L OHV Vulcan with 77,000 miles. It was kept in a carport for most of its life.

The car has high RPM at start. It used to rev up to the 3,000s+ as I'd just sit in a parking space. Replacing the IAC has helped. If I sit for a while, it calms down and slowly settles at about 1,000. It rarely goes much lower than 900, which is when I shift into gear.

Specifically, I have to let it warm up for a good five to ten minutes before shifting into Reverse or Overdrive/Drive. If I don't, it will "thunk" hard into gear. This used to be so violent that the engine would jerk backward and slam against the hood. It damaged the firewall and snapped the windshield washer fluid line (yeah, really).

Even if the car is warmed up and has been driven for a while, it will do this when shifting into first unless I accelerate veeeeeeeery slowly. And when I say "very slowly," I mean "enraging even to the oldest elderly person who might be following me" slowly. You could walk faster.

Problem Recap: Car has high RPMs at start and takes forever to settle; shifting from cold into R or OD/D is awful; accelerating from a stop into first is also awful

Things I've Replaced: EGR (didn't remember this; checked records, did it last year); PCV (generic), IAC (Motorcraft), motor mounts (heavy ones, and did it again after the engine tried to fly into the cabin), transmission fluid (didn't flush, just replaced), transmission filter (Motorcraft; kept original gasket), oxygen sensor, engine air filter

Things I've Taken It To Specialists For: Looking for vacuum leaks (none found), examining hoses (no issues found), figuring out why the transmission does what it does (more below...)

I've had four or five separate mobile mechanics see it, and they couldn't fix it. I took it to one specialist who diagnosed some of these issues, and I replaced the parts as best they could.

Finally fed up, I did my research, and took it to what is supposed to be the best transmission specialist shop within miles and miles of me. I fully expected to be charged an arm and a leg. I just wanted to be done. I'd do anything. ANYTHING!

... But they told me that there's a transmission cooler leak (is this... possible on the '99 Taurus? Does that little cooler thing leak? I thought maybe they meant a line but they were really adamant), and that the IAC is definitely the culprit. I explained that I already went through several IACs, and that the IAC is a dumb part, but that I'm 100% sure I have the right IAC, recommended by Ford and all.

They then said it must be a computer problem. I replied that the IAC doesn't have any electronics in it, and they said that's fine, sure, but then the car's computer is bad. I argued that it's a '99 and its computer is functionally simple and I really think it must be something else. They disagreed.

So... am I crazy? Am I doomed? Am I seriously just going to, as much as it pains me, accept that this car will always have these problems and just drive it into the dirt? I was willing to throw money at it and that didn't even work...

Thanks in advance for any help you can provide... I'm going to go cry in a corner for a while.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by RJM; 06-07-2019 at 03:30 PM. Reason: Added EGR and edited a little bit
RJM is offline  
Sponsored Links
Advertisement
 
post #2 of 31 (permalink) Old 06-07-2019, 02:23 PM
Senior Member
 
TollKeeper's Avatar
 
Join Date: Aug 2018
Location: Denver, Colorado
Chapter: Pacific Northwest
Year: 2005
Model: Mercury Montego
Engine: 3.0L 24v Duratec V6
Posts: 711
Rep Power: 3
 
Garage
Trader Score: 0 reviews
To me, its sounds like a vacuum leak. This could be a stuck EGR, or even something as simple as the throttle body plate isnt closing all the way.

Other than that, I would take a can of carb cleaner or starting fluid, and start spraying around those vacuum lines, and intake, and see if you get a blip on the RPM's.

Brian - Carpe Diem

2005 Mercury Montego 52k
2004 GMC Envoy XUV 182k
2001 Pontiac Aztek GT AWD 120K
TollKeeper is online now  
post #3 of 31 (permalink) Old 06-07-2019, 02:38 PM Thread Starter
RJM
Junior Member
 
RJM's Avatar
 
Join Date: Jun 2019
Location: SoCal
Chapter: West Coast
Year: 1999
Model: Ford Taurus
Engine: 3.0L 12v Vulcan V6
Posts: 8
Rep Power: 0
 
Garage
Trader Score: 0 reviews
Thank you for replying. I too suspected vacuum leaks, and I wanted to be absolutely sure it was checked correctly, so I'd taken it into a shop for that. They said they'd gone over it a couple of times, and that they could not find it. This doesn't mean I'm dismissing you, though; rather, I have a hard time trusting myself. The longer I've had the car, the less self-trust I've had about fixing it.

What is the relative safety of spraying around with carb cleaner while the engine is running? Fairly good, I hope?

As for the EGR, I'll look into that... I don't know if we have checked that at all!

EDIT: Alas... looks like the EGR was replaced too.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by RJM; 06-07-2019 at 03:31 PM. Reason: Checked records and saw that the EGR was replaced
RJM is offline  
 
post #4 of 31 (permalink) Old 06-07-2019, 02:46 PM Thread Starter
RJM
Junior Member
 
RJM's Avatar
 
Join Date: Jun 2019
Location: SoCal
Chapter: West Coast
Year: 1999
Model: Ford Taurus
Engine: 3.0L 12v Vulcan V6
Posts: 8
Rep Power: 0
 
Garage
Trader Score: 0 reviews
Oh, and the transmission cooler leak thing... am I being "that customer" by doubting the diagnostic? That and their strong feelings about the computer and IAC?

I hate being "that customer" to anyone in labor jobs, because I feel they're deeply disrespected as it is, but... I went through several friggin' different IACs! And it's a dumb part! And it's OEM! And... I'm not crazy, right?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
RJM is offline  
post #5 of 31 (permalink) Old 06-07-2019, 03:31 PM
Senior Member
 
TollKeeper's Avatar
 
Join Date: Aug 2018
Location: Denver, Colorado
Chapter: Pacific Northwest
Year: 2005
Model: Mercury Montego
Engine: 3.0L 24v Duratec V6
Posts: 711
Rep Power: 3
 
Garage
Trader Score: 0 reviews
The RPM's being so hard will make the engine jump a lot more than it should. Fix one thing at a time here, get the idle under control, and then move on to the next problem.
kekaye56 and RJM like this.

Brian - Carpe Diem

2005 Mercury Montego 52k
2004 GMC Envoy XUV 182k
2001 Pontiac Aztek GT AWD 120K
TollKeeper is online now  
post #6 of 31 (permalink) Old 06-07-2019, 03:45 PM
Senior Member
 
TollKeeper's Avatar
 
Join Date: Aug 2018
Location: Denver, Colorado
Chapter: Pacific Northwest
Year: 2005
Model: Mercury Montego
Engine: 3.0L 24v Duratec V6
Posts: 711
Rep Power: 3
 
Garage
Trader Score: 0 reviews
It looks like you were editing the comment about the EGR while I was replying. From my readings on the forum, there is a common problem with the EGR, and you can perform a suck test on it to check for function. Another problem is the Vacuum line to it is in a high heat soak area, so the line looks good, but its heat warped, and leaks.
RJM likes this.

Brian - Carpe Diem

2005 Mercury Montego 52k
2004 GMC Envoy XUV 182k
2001 Pontiac Aztek GT AWD 120K
TollKeeper is online now  
post #7 of 31 (permalink) Old 06-07-2019, 04:05 PM
Technical Advisor
 
Join Date: Feb 2007
Location: Milwaukee, WI
Chapter: Midwest
Year: 2005
Model: Ford Taurus
Engine: 3.0L 24v Duratec V6
Posts: 7,585
Rep Power: 87
     
Trader Score: 0 reviews
And the code or codes present are????? Get the code or codes stored in the PCM and report back.
RJM likes this.

05 Taurus SEL Duratec - my daily driver
04 Taurus SES Duratec - wifes car - TOTALED
06 Taurus SE Vulcan - wifes new ride
95 Taurus GL Vulcan winter car
Toy #1 - 86 Tbird 5.0 (original owner) - LOTS of mods
Toy #2 - 88 Tbird Turbo Coupe - LOTS of mods
67 Honda 450 Super Sport - completely customized
Jeff K is offline  
post #8 of 31 (permalink) Old 06-07-2019, 04:50 PM Thread Starter
RJM
Junior Member
 
RJM's Avatar
 
Join Date: Jun 2019
Location: SoCal
Chapter: West Coast
Year: 1999
Model: Ford Taurus
Engine: 3.0L 12v Vulcan V6
Posts: 8
Rep Power: 0
 
Garage
Trader Score: 0 reviews
I'll look up the EGR suck test, spray around with the carb cleaner (still have some!) and get the PCM codes from the specialist, and report back. Thanks!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by RJM; 06-07-2019 at 04:51 PM. Reason: derp
RJM is offline  
post #9 of 31 (permalink) Old 06-07-2019, 05:33 PM
Crazy Devoted Member
 
Join Date: Jan 2010
Location: North Canton, Ohio
Chapter: Midwest
Year: 2006
Model: Ford Taurus
Engine: 3.0L 12v Vulcan V6
Posts: 6,489
Rep Power: 64
    
Trader Score: 0 reviews
Is the IAC valve a Motorcraft brand, if not then you can check codes but you will eventually need to replace it again. I have been there trying to save a few bucks on IAC valves. Aftermarket valves mess up idle speeds and response.


If engine is moving that much you also have broken engine mounts or bolts fell out of the front engine mount. Also the top torque strut must be bad since it should limit engine movement.


Leaking trans cooler should show a drip in the driveway
TollKeeper likes this.
Automender12345 is offline  
post #10 of 31 (permalink) Old 06-07-2019, 05:37 PM
Senior Member
 
TollKeeper's Avatar
 
Join Date: Aug 2018
Location: Denver, Colorado
Chapter: Pacific Northwest
Year: 2005
Model: Mercury Montego
Engine: 3.0L 24v Duratec V6
Posts: 711
Rep Power: 3
 
Garage
Trader Score: 0 reviews
Quote:
Originally Posted by Automender12345 View Post
If engine is moving that much you also have broken engine mounts or bolts fell out of the front engine mount. Also the top torque strut must be bad since it should limit engine movement.
I completely forgot about that one.. Yea the engine should not have come anywhere near the firewall, even if the strut was bad. Is the Torque Strut even in the engine bay? Did it possibly rip off the strut tower? I cant imagine it would rip off the engine, thats some pretty high guage steel.
RJM likes this.

Brian - Carpe Diem

2005 Mercury Montego 52k
2004 GMC Envoy XUV 182k
2001 Pontiac Aztek GT AWD 120K
TollKeeper is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Taurus Car Club of America : Ford Taurus Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
2002 Vulcan intermittent no start and fuel pressure variations Tony G Maintenance and Repair 11 07-25-2015 09:15 PM
99 Sable Duratec crank, hard start Ezratobit Maintenance and Repair 52 04-16-2015 02:38 PM
High idle at cold start Opfor2 Maintenance and Repair 13 02-08-2014 05:28 PM
Battery Light And High RPMs Soon As I Start The Car TheBassMekanik Maintenance and Repair 2 10-25-2013 10:46 AM
Why won’t my car start? - Comprehensive No-Start Troubleshooting Guide behlinla Maintenance and Repair 1 01-05-2013 11:52 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome