Question about 1996 Ford Mustang

1 Answer

4.6 sohc idles at 3000 and will not idle normal untill i unplug the tps then runs fine other then the slight dead spot cause the tps is not plugged in 96 gt 4.6 sohc stock maf cold air kit jegs h-pipe (with MILS) slp loud mouth II stock rear end no tunes PI intake stock heads and cams no headers

Posted by on

  • autry_bender Aug 26, 2010

    check engine light is on says the emmision syatem is bad and i checked the voltage of the tps and it reads normal but the tps is new just replace it before i drove the car to north carolina

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 118 Answers

Is the check engine light on? If so, what are the codes? Have you checked the TPS to find out if it is bad?

Posted on Aug 26, 2010

  • dlinkhart Aug 26, 2010

    As a starting point, you should repair whatever is causing the check engine to be on. If you tell me the code(s), I can point you in the right direction to do that. In the mean time, think about what might be causing a vacuum leak, because a vacuum leak can cause a high idle. There are also a number of other things that can cause a high idle. I can also step you through the process, but you have to fix your other problem(s) first. One of my own Fords had a similar idle problem, and it actually turned out to be a bad computer- water had leaked into it and ruined it. The MIL codes kept reporting random errors, and the idle was random as well. Another one of my own vehicles had a defective new TPS.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Eng. icon came on idle and runs rough no power


First, have codes read to narrow possible causes. clean Idle air control valve or replace. TPS failure or "dead spots" send wrong signals to ECM. A blocked cat., low fuel or pressure, O2 sensor bad, sparkplug and wires faulty are some of many reasons.

Mar 31, 2014 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Air regulator stuck open, idle air control valve problems 90 240sx SOHC


Yes, a defective IAC valve can cause an incorrect idle issue. The other reasons or possibilities are: kinked or damaged throttle linkage, improperly adjusted idle screw, defective, loose, or improperly adjusted TPS sensor, vacuum leak, leaking base gasket (carb.), or the timing is off (maybe the distributor has been adjusted or is loose). I hope these suggestions help. Please let me know how your repair goes of if you have other questions, good luck.

Mar 16, 2014 | Nissan 240SX Cars & Trucks

1 Answer

Engine running rich


Sounds like a dead coil pack and needs replaced cause you're getting no fire to those plugs and causing a rough idle. Another thing is, that catalytic converter will only turn red because it's plugged up and needs replaced. Have that checked out friend.

Jul 10, 2017 | Cars & Trucks

1 Answer

2004 chrysler sebring 3.0 stalls and will not idle. Engine lite came on and scanner said TPS low voltage on one side. I replaced TPS and it temporarily idled ok. Engine light is now off. Runs fine except...


This is where proper diagnosis comes in...as the TPS sensor voltage low because of a failed TPS sensor? Or was the TPS voltage low due to low battery voltage at the control module? Did you bother to check for the proper voltage at the TPS sensor connector before throwing parts at the problem? If the battery voltage goes low, it is NORMAL for the engine to not idle correctly. Low voltage at the control module can cause the computer to lose all of its "learned" data. It will have to "re-learn" how to idle the engine. This can sometimes take a few days. This is exactly WHY I keep telling people to not be disconnecting batteries in an attempt to "clear" computer fault codes.
If your battery has been going dead, you need to properly test and diagnose your battery and charging system. If this system is not working correctly, there is NO WAY your computer network can function correctly. - this MUST be diagnosed and repaired FIRST!

May 18, 2012 | 2004 Chrysler Sebring

1 Answer

1991 Saturn SL SOHC has two strange conditions that I can't figure out. First, the car seems to have a slight but constant acceleration at any speed under 30mph, and second, when you put the car into...


the idle air control valve can cause the symptoms your describing and it may not set a trouble code have it replaced and see if that repairs your issue

Jan 18, 2010 | 1991 Saturn SL

1 Answer

1996 Galant runs rough until gas pedal pressed about quarter way down,then runs fine.Car is running lean.Not sure how to check if fuel pump is working correct,or maybe MAS?


You should have your TPS and EGR looked at as those cause rough idles...Other causes are bad idle air control valve, bad plugs, bad distributor cap & rotor, a bad wire, bad O2 sensor, etc...

Aug 25, 2009 | 1996 Mitsubishi Galant

1 Answer

Idle high to low


try cheking your timing

Mar 02, 2009 | 1990 Chevrolet S 10 4WD

2 Answers

1997 ford ranger idol problems


MIGHT be the tps
The TPS is sensitive to heat, moisture and vibration leading to the failure of some units. The sensor is a sealed unit and cannot be repaired only replaced. A TPS may fail gradually leading to a number of symptoms which can include one or more of the following: -
  • Poor idle control: The TPS is used by the ECU to determine if the throttle is closed and the car should be using the Idle Air Control Valve exclusively for idle control. A fault TPS sensor can confuse the ECU causing the idle to be erratic or "hunting".
  • High Idle Speed: The TPS may report faulty values causing the engine idle speed to be increased above normal. This is normally found in conjunction with a slow engine return to idle speed symptom.
  • Slow engine return to idle: A failing TPS can report the minimum throttle position values incorrectly which can stop the engine entering idle mode when the throttle is closed. Normally when the throttle is closed the engine fuel injectors will be deactivated until a defined engine RPM speed is reached and the engine brought smoothly to idle speed. When failing a TPS will not report the throttle closed and fueling will continue causing the engine to return to idle very slowly.
  • Engine Hesitation on Throttle Application: The TPS is also used by the ECU to determine if the driver has applied the throttle quicker than the Manifold Air Pressure sensor can read. The fueling is adjusted acordingly to cope with the sudden increase in air volume, however a faulty sensor can cause the ECU to ignore this data and the engine will "hesitate" when applying the throttle. In extreme cases with the engine at idle, a sudden application of full throttle can stall the engine.
  • Engine Misfire: A fault TPS can report values outside the deined acceptable range causing the ECU to incorrectly fuel the engine. This is noticable as a slight misfire and can trigger the misfire detection software and/or Malfunction Indicator Lamp (MIL) light on the dashboard. Extreme cases can cause excessing misfires resulting in one or more cylinders being shut down to prevent engine and catalytic converter damage.
[edit] Manual recalibration In all cases a manual recalibration of the TPS may resolve the issues at least on a temporary basis. To recalibrate the TPS: -
  1. With the engine off, insert the key and turn the ignition to position 2 (On) without starting the engine.
  2. For MEMS-equipped cars (S1), quickly press and release the accelerator pedal several times (at least 5, but to be sure 8 or 9) using as much of the throttle travel as practicable. This will trigger the ECU into the closed-throttle reference learn algorithm, which has it looking for the lowest measured static throttle position (the closed position). The throttle position calibration is a fixed definition from this point.
  3. Turn the ignition off, remove the key and wait for the ECU to power down (about 30-40s).
  4. Start car as normal.

Feb 26, 2009 | 1996 Ford Explorer

1 Answer

1989 Grand Marquis 5.0 hesitation under load at 25, 40, 50 mph and slightly rough idle


What happens when you unplug and cap the vacuum line at the EGR valve? Does the problem go away? Before doing this does the car idle rough? If so perhaps the EGR is stuck open...

Jun 30, 2008 | 1989 Ford Crown Victoria

Not finding what you are looking for?
1996 Ford Mustang Logo

Related Topics:

162 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

75744 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

fordexpert

Level 3 Expert

5495 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...