RPMs drop slowly

Reply Subscribe

Thread Tools

Search this Thread

05-10-2007

SouthernMudSlinger

Member

Thread Starter

Join Date: Aug 2006

Location: Demorest,Ga

Posts: 1,724

Likes: 0

Received 0 Likes on 0 Posts

RPMs drop slowly

Whenever I shift, specially the 1-2 shift, I have to wait like 2 seconds before I let the clutch out, so the rpms will drop so it wont jerk. (having a good bit of play in the drivetrain doesn't help at all). The higher the gear I go up, the faster the rpms drop to make a smooth shift. Also, the higher rpms I go, the faster the rpms drop as well, even if I make a 1-2 shift. Now, if I sit still, and rev it to say 2500rpms in neutral, the rpms drop pretty quickly. Is this normal? Its really annoying to have to pause for a couple seconds going into 2nd gear if I shift around 3k or below. I also still have the issue of the rpms dropping below normal idle speed while comming to a stop. Any ideas on this?

Reply Like

05-11-2007

ranger1998xlt

Member

Join Date: Jan 2007

Location: Iowa

Posts: 36

Likes: 0

Received 0 Likes on 0 Posts

Sounds to me like the IAC Valve. Mine did that and I replaced it, then it quit. They are $57 dollars at Napa.

Reply Like

05-11-2007

SouthernMudSlinger

Member

Thread Starter

Join Date: Aug 2006

Location: Demorest,Ga

Posts: 1,724

Likes: 0

Received 0 Likes on 0 Posts

what was yours doing?

Reply Like

05-16-2007

ranger1998xlt

Member

Join Date: Jan 2007

Location: Iowa

Posts: 36

Likes: 0

Received 0 Likes on 0 Posts

Mine RPM's would not go down in between shifts. They would stay about 2200 and I would have to force them down. Then it quit when I replaced it.!

Reply Like

05-16-2007

SouthernMudSlinger

Member

Thread Starter

Join Date: Aug 2006

Location: Demorest,Ga

Posts: 1,724

Likes: 0

Received 0 Likes on 0 Posts

do the rpms drop fast even at low rpms now that you've replaced it?

Reply Like

05-16-2007

Needforspeed3685

Member

Join Date: Aug 2005

Location: Lowell, AR

Posts: 1,836

Likes: 0

Received 10 Likes on 10 Posts

Sounds like a bad IAC valve to me. You can clean it with a strong brake parts cleaner. Pull it off and douse the inside of both holes with the aerosol.

Reply Like

05-16-2007

SouthernMudSlinger

Member

Thread Starter

Join Date: Aug 2006

Location: Demorest,Ga

Posts: 1,724

Likes: 0

Received 0 Likes on 0 Posts

Where is the IAC valve?

Reply Like

06-09-2007

T4EaterJonny

Member

Join Date: Nov 2006

Location: California

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

My 2006 ranger did that when my a/c was on. :-/

Reply Like

06-09-2007

Rockledge

Member

Join Date: Nov 2006

Location: Connecticut

Posts: 479

Likes: 0

Received 1 Like on 1 Post

Possibly related TSB:

Quote:

Article No. 00-3-5

HIGH IDLE - TAURUS WITH 3.4L SHO AND RANGER WITH 2.5L AND MANUAL TRANSMISSION

Publication Date: JANUARY 31, 2000

FORD: 1998-99 TAURUS SHO; 1998-2000 RANGER

ISSUE:
A high idle may occur on some vehicles. This may be caused by a poor electrical connection at the wire harness (-12B637-) to Throttle Position Sensor (TPS).

ACTION:
Splice into wire harness (-12B637-) just after the TPS with TPS Connector High Idle Service Kit. Refer to the following Service Procedure for details.

SERVICE PROCEDURE
Verify the concern vehicle exhibits a "high idle" condition when depressing the clutch or shifting between gears for the Ranger or when shifting between Park and/or Neutral for Taurus SHO. If high idle condition is not exhibited, proceed with other driveability diagnostic fix procedures. If condition is present, obtain a High Idle Service Kit (XF1Z-15K607-AA) and proceed by following the instructions found within the service kit.

PART NUMBER / PART NAME
XF1Z-15K607-AA / High Idle Service Kit

Reply Like