Aug 192016
 

2001 Ford TaurusMY 2001 FORD TAURUS 24 VALVE DOHC IDLE ROUGH WHEN STOPPING AND ON THE BRAKE WITH CAR IN DRIVE IT WILL STALL. BUT WILL CRANK BACK UP. WHAT COULD BE THE PROBLEMS?


RESPONSE

Start with pulling any check engine light codes and then post them below in the comments for further information. Could be a failing engine sensor or ignition component accompanied with a sticking IAC valve. These will cause the engine to idle rough.

Aug 172016
 

2004 Ford EscapeMy battery light was coming on. My alternator went bad alright so I replaced it. I bought a new battery. When I was changing it I messed up the voltage regulator and didn’t know it. Eventually I took it and had it rebuilt, the alternator that is and put a new plug on it. It still wouldn’t run right so I took the battery to get checked because I jumped it quite a few times when alternator was still messed up and now the battery is bad. These model cars have chronic electrical issues and I noticed that my ignition is a little loose. When I pull the key out it makes noise like the keys in it. I know once I get this new battery it’s still not going to charge probably. I took alternator off myself under the computer and vacuum hoses and pulled it out the top what you’re not supposed to do but it worked. I’m wondering if I damaged a wire in the wiring harness. How do I check that? I know how to do the voltmeter but where my harness goes into the ECM, can that be taken apart to test? This is the real question I need, can my ignition switch or coil packs keep my charging system from charging? Because I’m almost positive I need new coil packs because of the missing and how crappy the car runs. And could the battery not charging make it miss and run crappie like it would if the coil packs are out? I can’t afford to take it to the mechanic and I have to get it running. Sorry this isn’t written better. If you can make sense of it, if not just say so and I will revise and write better thank you.


RESPONSE

  1. Can my ignition switch or coil packs keep my charging system from charging?

No. The ignition switch nor the coil pack have anything to do with the charging system.

2. Could the battery not charging make it miss and run crappie like it would if the coil packs are out?

Yes. A weak battery and a failed alternator can cause the engine to function improperly due to a lack of proper voltage to the PCM.

Make sure to check your fuses after replacing the battery and alternator.

2004 Ford Escape Charging System Wiring Diagram

2004-ford-escape-charging-circuit-1-of-1
Aug 112016
 

2000 Ford RangerWhen I accelerate to driving speed and take my foot off the accelerator the engine will not idle down. And when the engine does idle down it smells like gas.


RESPONSE

In most cases when an engine idles high it is caused by a vacuum leak. This would also cause the engine to add  more fuel. The engine adds more fuel to try and compensate for the extra air it is taking in. Most common place for a vacuum leak is on the PCV hose. You may need to remove the left front inner fenderwell splash shield to gain access.

PCV 2000 Ford Ranger

Engine Emission Control

CAUTION: Do not remove any part of the engine emission control system. Operating the engine without the engine emission control system intact will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life.

The engine emission control system consists of the:
•positive crankcase ventilation (PCV) system.
•exhaust gas recirculation (EGR) system (2.3L and 4.0L engines only).

Exhaust Gas Recirculation

The EGR system returns a small amount of exhaust gas into the intake manifold. This reduces the overall combustion temperature. Cooler combustion temperatures provide a significant reduction of the oxides of nitrogen (NOx) in the exhaust emissions.

2.3L Engine

The 2.3L engine incorporates a stepper motor-controlled EGR valve which receives its signal from the PCM. Engine coolant is used to cool the EGR valve. The EGR valve and stepper motor are serviced as an assembly.

4.0L Engine

The powertrain control module (PCM) controls the EGR vacuum regulator solenoid. The EGR vacuum regulator solenoid controls the vacuum to the EGR valve. When the EGR valve opens, exhaust gas flows to the intake manifold to be returned to the combustion cycle. The differential pressure feedback EGR system monitors the flow and returns a signal to the powertrain control module (PCM).

The amount of recirculated exhaust gas depends upon:
•engine rpm.
•intake manifold vacuum.
•exhaust backpressure.
•engine coolant temperature.
•throttle position.

Exhaust Emission Control System

The vehicle emission control information (VECI) decal is located on the upper radiator support and shows:
•components of the emission control system.
•the correct vacuum hose routing.
•the color stripe of the vacuum hoses.

Positive Crankcase Ventilation (PCV) System

The PCV system uses intake manifold vacuum to ventilate blow-by fumes from the crankcase and return the fumes to the intake manifold for combustion. The 2.3L engine does this through a water-heated fitting. The PCV valve varies the amount of blow-by gasses returned to the intake manifold based on available engine vacuum. The PCV valve also prevents the entry of combustion backfiring into the crankcase.

 

Aug 102016
 

1993 Ford Explorer SportDoes it need shims for starter ? If so , what size shim ??


RESPONSE

NO. There are no shims needed or used during a starter replacement on a 1993 ford explorer sport.

Starter Replacement 1993 Ford Explorer

Removal:

1.Disconnect the negative battery cable.
2.Raise the front of the vehicle and install jack stands beneath the frame. Firmly apply the parking brake and place blocks in back of the rear wheels. Disconnect all wires connected to the starter, including this ground wire on the starter mounting bolt stud
3.Tag and disconnect the wiring harness at the starter.
WARNING
When detaching the hard shell connector at the S-terminal, grasp the plastic shell to pull it off. Do not pull on the wire itself. Ensure to pull the connector straight off to prevent damage to the connector and S-terminal. If any part of the connector is damaged, replace the damaged component.
Remove the starter motor (arrow) mounting bolts . . .
starter replacement
4.Remove the starter mounting bolts and remove the starter. . . . then remove the starter — be careful, the starter motor can be quite heavy

Starter Replacement 1993 Ford Explorer

To install:

5.Position the starter motor against the engine and install the mounting bolts. Tighten the mounting bolts to 15–19 ft. lbs. (21–27 Nm).
6.Install the starter solenoid connector by pushing it straight on. Ensure that the connector locks in position with a notable click.
Install the starter cable nut to the starter solenoid B-terminal. Tighten the nut to 80–123 inch lbs. (9–14 Nm).

7.Connect any remaining wiring to the starter motor.
8.Lower the front of the vehicle and remove the wheel blocks.
9.Connect the negative battery cable.

Aug 102016
 

2003 Ford TarusWhere are the fusible links located on this vehicle.


RESPONSE

Fusible Links are generally located along the battery cables. The cables that connect between the battery and the alternator are widely used on many vehicles. When the links fail the entire section needs to be replaced. The 2003 Ford Taurus does not have any. Instead it utilizes a large 174 amp fuse that is located in the Battery Junction Box.

fusible links

 

Fusible Links – Power Distribution 2003 Ford Taurus

2003-ford-taurus-power-distribution-1-of-3

What is a Fusible Link?

A fusible link is a short piece of insulated low-voltage cable within an automotive wiring harness. It is there to protect the harness where a fuse is unsuitable. In an extreme current overload situation, the conductor within the link is melted while the excessive heat is contained within the link’s insulation.

Aug 082016
 

1997 Ford EscortI have a 1997 ford escort and was hearing a noise that the mechanic said was the spring or bearings inside one of the pulleys. I’m not sure which was the issue, the spring or bearings.  So I replaced the whole setup pulleys and tensioner. Before I could get to the carport I smelled hot melting rubber. After letting it cool down I could see smoke coming from the belt and it was hot. After getting it put back together, I started it and sounded good for couple minutes then the belt broke. Any idea what made it hot and break the belt?


RESPONSE

Most likely reason would be a locked up pulley or accessory. The accessories being the power steering pump, air conditioning compressor or alternator. The Air conditioning compressor or alternator would be the most common. With the belt broke already I would check these accessories before installing a new serpentine belt.

Try to spin them by hand. If they are locked up, the issue is found. Some of the pulleys may sounds off if an internal bearing is going out. These may need to be replaced but unless really worn out would not cause the belt to break. Only a locked up pulley or accessory would cause the belt to break. What happens when the belt slides over the locked up accessory component, it creates friction/heat and burns the belt in two.

Belt Broke – 1997 Ford Escort Serpentine Belt Replacement

Removal

belt broke - serpentine belt routing diagram 1997 Ford Escort

Relieve the drive belt tension.

  • Use a (A) ratchet or breaker bar inserted in the square hole in the drive belt tensioner flange.
  • Rotate the (B) drive belt tensioner in a clockwise motion to release belt tension.
  • Remove the drive belt from the accessory drive belt routing pulley (6C348) and slip it off the remaining accessory pulleys.

Installation

  1. Position the drive belt over the accessory pulleys. Raise and support the vehicle, if necessary.
    • Use a (A) ratchet or breaker bar inserted in the square hole in the drive belt tensioner flange.
    • Rotate the (B) drive belt tensioner in a clockwise motion.
  2. Slip the drive belt under the accessory drive belt routing pulley and release the tool. Remove the tool from the drive belt tensioner.
  3. Ensure that the (A) drive belt V-grooves are correctly seated in the (B) accessory pulley V-grooves.

Serpentine belt pulley groove

Aug 042016
 

2005 Ford EscapeGetting no fire to the spark plugs. I have changed two coil packs and spark plugs along with the crankshaft position sensor. What else could cause this issue?


RESPONSE

  • PCM Fuse
  • PCM
  • Ignition Transformer Capacitor
  • Wiring Harness
  • Camshaft Position Sensor

Engine Ignition – No Fire

The electronic ignition (EI) system is a coil-on-plug ignition system. The coil-on-plug ignition system consists of the following components:

  • Coil-on-plugs
  • Spark plugs
  • Crankshaft position (CKP) sensor
  • Camshaft position (CMP) sensor

The coil-on-plugs:

  • change low voltage signals from the powertrain control module (PCM) to high voltage pulses.
  • supply the high voltage pulses to the spark plugs.
  • are connected directly to each spark plug.

The spark plugs:

  • change high voltage pulses into a spark which ignites the fuel and air mixture.

The CKP sensor:

  • is a variable reluctance sensor.
  • is triggered by a 36-minus-1 tooth trigger wheel mounted on the crankshaft.
  • provides base timing and crankshaft speed (rpm) to the PCM.

The CMP sensor:

  • is a variable reluctance sensor.
  • provides camshaft rotational location information to the PCM.

Ignition Coil wiring diagram 2005 Ford Escape

2005-ford-escape-engine-controls-5-of-5

 

 

 

Aug 032016
 

1999 Ford ExplorerI cant get my wipers to stop unless I pull the fuse. I replaced the multi switch and when I put the new one in, when put on high the washer fluid would start to spray. I put the old multi switch in another truck 1997 explorer it worked fine. Also changed the front plastic part of the motor (not exactly sure what it is called). Checked the wiring under dash and the wiring harness going to the motor. All working properly but there is a teal wire that I cant get any reading off of with my light tester. And the wire goes to the power distribution box with a BUNCH of other wires and cant sift through.


RESPONSE

Looking at the wiring diagram, I would lean toward a relay sticking and back feeding. Most likely the WIPER RUN RELAY.

Front Wipers /Washer Wiring Diagram 1999 Ford Explorer

1999-ford-explorer-wiper-washer-front-wiper-washer-circuit-1-of-1

Wipers and Washers—Front

The wiper system has four different operating modes: off mode, low speed mode, high speed mode, and interval mode.

In the off mode, there is no windshield wiper motor activity, and the windshield wiper motor is in the PARK position.

In the low speed mode, the windshield wiper motor is set to a low speed setting. The windshield wiper hi/lo relay is deactivated, while the windshield wiper run/park relay is activated.

In the high speed mode, the windshield wiper motor is set to a high speed setting. The windshield wiper hi/lo relay and the windshield wiper run/park relay are both activated.

In the interval mode, the windshield wiper motor is set to a low speed setting with the windshield wiper hi/lo relay deactivated. The windshield wiper run/park relay is activated at the beginning of each wipe and deactivated when the windshield wiper motor park switch reaches the RUN position.

The permanent magnet three-brush windshield wiper motor allows selection of either low or high speed, when selected the steering column mounted multi-function switch (13K359). When the multi-function switch is in the LOW position, the common brush and low speed brush are used. When the multi-function switch is in the HIGH position, current bypasses part of the armature winding to the high speed brush. When the multi-function switch is moved to the off position, the windshield wiper motor will continue to run at low speed until the windshield wipers (17500) park.

When the multi-function switch is in the interval (INT) position, the windshield wipers will make a single sweep followed by a pause. The control knob on the end of the multi-function switch adjusts the pause from approximately 1-20 seconds.

Vehicles equipped with a generic electronic module (GEM) are available with the speed-dependant interval wiper feature. During the interval mode, the delay between successive wipes will decrease with higher vehicle speed to compensate for increased water on the windshield glass. This feature will relieve the operator from constantly switching between interval settings.

 

Dwell Intervals for Each Switch State
Delay/Wash Switch State Dwell Interval
0-10 MPH 65 MPH and Above
1 (Long) 18 18
2 16 5
3 13 4
4 10 3
5 7 2
6 4 1
7 (Short) 1 0

 

If the washer switch is pressed between 100 ms and 300 ms, with the mode switch in the OFF position, the wiper system will provide one low speed wipe with no wash.

To engage the windshield washer, push the knob of the multi-function switch toward the steering column (3C529). When the multi-function switch is in the OFF or INT position, the windshield wipers will run as long as the knob is depressed up to 10 seconds. When the knob is released, the washer will stop immediately, but the windshield wipers will continue to run for two to three sweeps, then return to their previous set operation. Washer engagement does not affect windshield wiper operation when the multi-function switch is in the LOW or HIGH position, but the washer will be deactivated if the knob is held greater than 10 seconds.

Feature inputs:

  • Ignition switch RUN position: (battery potential on both RUN and RUN/ACC inputs).
  • Ignition switch ACC position: (battery potential on RUN/ACC input only).
  • Wiper switch position: (different resistance for each mode; see Wiper Switch Resistance Values table).
  • Interval Delay/Wash switch position: (different resistance for each mode; See Interval Delay/Wash Switch Resistance Values table).
  • Windshield wiper motor park switch: (ground for PARK position and battery potential for RUN position).

Feature outputs:

  • Windshield wiper hi/lo relay control: (ground to activate and open circuit to deactivate.)
  • Windshield wiper run/park relay control: (ground to activate and open circuit to deactivate.)
  • Washer pump relay control: (ground to activate and open circuit to deactivate.)
Aug 032016
 

1995 Ford ContourDriving along the road the other day car just completely stops, power went out. I have battery but my car won’t start what may be wrong?


RESPONSE

If the engine does not crank – most likely reason would be the battery is weak from the alternator not charging it. The engine was running off the battery by itself because the alternator was not charging it. Now the battery is probably to weak to start the engine or keep it running. Check to make sure the alternator belt did not come off.