Dec 012016
 

1999 Ford ExpeditionFirst of all about a week ago my truck was hit from the rear while parked. Consequently It was hit hard enough to push the hitch to one side a bit. Since then, the gas gauge is not registering right and the car cuts out a lot. Hence, Could this be related?


RESPONSE

Absolutely. A hit hard enough to tweak a trailer hitch can cause quite a bit of damage to anything attached. The gas tank is secured tot he frame of the vehicle. So it absolutely has been shaken hard enough to cause the gas gauge sending unit to move. Also, this could have caused damage to the sending unit arm and the fuel pump module that it is connected to. However a more likely reason would be that the impact jarred some internal rust loose. The rust would not have come loose otherwise. Furthermore rust would clog the fuel filter at times and interfere with the fuel sending unit readings. In Conclusion the fuel gauge worked and truck ran fine before it was hit and now it doesn’t. Pretty safe to say it was related since the impact was hard enough to tweak the trailer hitch. .

Fuel Tank and Lines

Component Location

gas gauge location

Item Part Number Description
1 9030 Fuel tank filler cap
2 9034 Fuel tank filler pipe
3 9350 Fuel pump
4 9002 Fuel tank
5 9S278 Rear fuel supply return and vapor tube
6 9155 Fuel filter
7 9341 Inertia fuel shutoff switch

The fuel system consists of:

  • a fuel tank.
  • the fuel tank filler pipe which contains a restrictor plate to permit only unleaded fuel to be pumped into the fuel tank.
  • a 1/8 turn type fuel tank filler cap.
  • a fuel filter providing filtration to protect the fuel injectors.
  • fuel lines.
  • fuel pressure regulator.
  • a fuel pump containing:
    • the electric fuel pump which provides pressurized fuel to the engine.
    • the fuel level sensor (9275).
    • an inlet filter.
    • a check valve which maintains system pressure after the pump is shut off.
    • a pressure relief valve for overpressure protection in the event of restricted flow.

The fuel pump is controlled by the powertrain control module (PCM) (12A650) which energizes the fuel pump relay. Electrical power to the pump is provided through the inertia fuel shutoff switch

 

Nov 292016
 

1978 Ford Pinto PonyI have a 1978 Ford Pinto Pony 4 Cylinder. I would like assistance on setting the Crankshaft and Camshaft timing gears. Since after taking the front off the Engine to replace Timing Chain, Water Pump and Idler it got turned while tightening the Pulleys, etc.


RESPONSE

Place the timing gears “dot to dot”. Align the timing marks so that they are pointing at one another. The gears will only go on one way since there is a key-way that has to be lined up. The chain doesn’t have to be in any particular place as long as the the timing gears line up on the correct marks. Once you have them aligned, rotate the engine a couple of times and make certain the marks line up again. This is a great way to double check the correct installation.

timing gears diagram 1978 Ford 2.3L

Timing Cover Removal and Timing Gear Alignment

1978-ford-pinto-timing-cover-and-chain-removal-and-installation
Nov 282016
 

1995 Ford BroncoHow do you remove the Oil Pan on a 5.0 L, and what do I have to disconnect? Have disconnected the Engine Mounts and can not get it high enough to get the pan off. Will I have to disconnect the Transmission?


RESPONSE

You have started down the right track since the engine mounts need to be removed first. The oil pick up tube has to be removed before the oil pan can be removed. The pick up can be removed but it isn’t easy to do. A hand and a small socket or wrench will fit with some tricky hand bending. I’ll post a complete set of instructions for oil pan removal. Furthermore page down to the 5.0L engine for step by step instructions that include some illustrations.

Remove the nut attaching the oil pump pickup tube to the No. 3 main bearing cap stud

oil pan removal

  • Lower the pickup tube and screen into the pan, then lower the pan from the engine

Oil Pan Removal 1995 Ford Bronco/F150

1995-ford-bronco-oil-pan-removal-and-installation
Nov 282016
 

1994 Ford F150 XLTI just replaced my neutral safety switch and starter solenoid starter switch. And when starting my truck up, I discovered that my front fuel tank pump was not working but the back tank was. After some research I decided to change my fuel tank selector switch on the dash and now none of the pumps will work. This is a dual fuel tank system. I then put the old switch back on and same thing none will work. I have checked my fuses and relay and they appear to be fine. About two years ago I had both pumps replaced and the front tank replaced due to the truck sitting for years after Hurricane Katrina. Any pointers would be great.


RESPONSE

I recommend checking the inertia switch first. Should be located under the passenger floor mat toward the top. It is easy to get to and takes only a few seconds to test and or reset. Push the button. Next I would check Fuse O(20A) and then the fuel pump relay.

Dual Fuel Tank Wiring Diagram 1994 Ford F150

dual fuel tank wiring diagram 1994 Ford F150

Nov 252016
 

Ford Focus

Power surge and rough idle.

-It has this reoccurring power surge that causes the idle to fluctuate up and down. This causes the dash to vibrate. It seems to draw power when this happens. You can see the surge or power loss when putting on the brakes. Also when turning on radio heater or a/c and power windows. Its like its starting to die but then starts charging again.

-I have issues when turning a corner and occasionally the transmission will slip or hesitate, then kick back in again and also slips when you step on it a bit to get speed.

The fluid is a clear light red and doesn’t smell burnt, and is right at the level on the stick and as well has had a recent oil change. The plugs were removed and are burning light grey no abnormalities

Tingy Noise

-At highway speeds it makes a humming noise that gets louder as you go faster, like maybe a dry bearing? I checked the coolant and its concentrate was quite high. I think someone put concentrate in without mixing it 50/50, its the ford Yellow coolant. It has a slight tingy noise coming from the top of the engine by the injectors and ignition coils on top.. I had a ODB2 hooked up and the coolant is burning At 77 degrees and as well drawing a fair bit of power through the system.


RESPONSE

Sounds like an electrical issue for sure. If the alternator is not charging correctly for any reason or the battery has an issue I could see this happening. I suspect an internal short in the battery. This would cause the alternator to function abnormally and also not provide adequate voltage to the engine’s computer. This would also explain why the transmission seems to be having issue. Since the fluid level is good and the fluid itself appears clean the issue would most commonly be electrical. I am also going to assume there were no engine trouble codes present since you did not post any and you stated you have an OBD II Scan Tool.

 

Nov 242016
 

2005 Ford F150 King RanchI have a 2005 Ford F-150 King Ranch with 150,000 miles on it. I have changed plugs but when it is in a pull up a hill it has a miss or a jerk to it.


RESPONSE

This is common to an engine misfire. The typical cause is a failing ignition coil. Since there is more than one ignition coil it is sometimes difficult to pin point. The engines on-board computer, given enough time, will diagnose this issue for you. Once the misfire is detected enough times in a row the check engine light will illuminate. Once the light has illuminate the computer has recorded the exact location of the misfire. Since there are eight ignition coils at over a $100 each, it comes in handy to know which one to replace. No damage will be caused while driving the truck until the light comes on but it may save you some money.

Engine Misfire

When combustion in one or more cylinders does not occur or occurs at the wrong time.

 

Nov 222016
 

2006 Ford F150hard time starting, gauges are bouncing before they come up… what is causing this?


RESPONSE

May be a weak battery or poor battery connections if it seems to be cranking slower than normal. If it cranks over fast, then it may be in need of a tune up(spark plugs) or have a fuel related issue. May want to try some higher octane fuel from a different station the next time it needs a fill up. This would rule out having gotten some bad fuel in the past. Of course if the check engine light is on, have the codes pulled and post them below. Just about any local auto parts store will do this for free.

Nov 202016
 

2006 Ford Five HundredI used the OBD II / EOBD CODE READER and found the following code(4 error codes)
P0171 System too lean Bank 1
P0374 Timing Reference Hig n Resolution Signal A No Pulses
P0171 System too lean Bank 1
P0374 Timing Reference Hig n Resolution Signal A No Pulses
The same code reader gave me RPM(rpm): 705.50 while the engine was running but the gear was in Parked position

I don’t feel anything while driving the 2006 Ford Five hundred SEL (I don’t have much knowledge about vehicles). It accelerates well and goes easily to 40miles per hour when given the acceleration (I have not tried beyond 40 miles/hr in order to avoid any damage, as I bought it recently and want to repair it before use). The odometer reads about 200,000 miles.  I showed to a local mechanic he said the gear is either in 2nd or 3rd (limp mode) after a short test drive, which made me little worried, what can be the possible reasons of this errors and what should I do to make it a smooth running vehicle?


RESPONSE

Not sure if you made an error yourself when posting the codes but you show only 2 codes and posted them twice. None of the codes indicate anything to do with the transmission. There shouldn’t be any correlation between the two codes. So, look at them separately. As for code p0374 the Optical sensors are the camshaft and crankshaft sensors.

Ford Code P0171 – Fuel Injection System Too Lean Bank 1

Code P0171 Possible causes

– Intake air leaks
– Faulty front heated oxygen sensor
– Ignition misfiring
– Faulty fuel injectors
– Exhaust gas leaks
– Incorrect fuel pressure
– Lack of fuel
– Faulty Mass Air Flow (MAF) sensor
– Incorrect Positive Crankcase Ventilation (PCV) hose connection

Code P0374 – Timing Reference High Resolution Signal ‘A’ No Pulses

 Code P0374 Description

The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important inputs by the PCM for fuel control and timing. This test monitors the number of high resolution pulses which have been missed (not detected). It’s based on a comparison between the number of pulses that were detected since the last pump cam pulse and the number of the pulses that should have occurred. There are approximately 64 high resolution pulses for every cam pulse.

Code P0374 Possible causes

– Timing Reference Optical Sensor harness is open or shorted
– Timing Reference Optical Sensor circuit poor electrical connection
– Faulty Timing Reference Optical Sensor
– Damaged Powertrain Control Module (PCM)
Sensor Location Diagram
Nov 152016
 

1992 Ford FestivaRepeatedly blowing distributor coil


RESPONSE

Check and clean your connections. Check your wiring harness. Specifically your ground connections. The yellow/Green wire is the negative side and the Black/White wire is the positive side of the coil.

distributor coil diagram 1992 Ford Festiva

Distributor Coil Power Source

Disconnect primary wires at ignition coil. Turn ignition on. Measure between Black/White wire on harness connector and ground, If voltage is not greater than 10 volts, check battery feed, ignition switch and fusible links. If voltage is greater than 10 volts check coil resistance.

How to Test Distributor Coil

Using a multi-meter, measure resistance between primary terminals of coil. Measure resistance between positive primary terminal and coil tower.

  • Primary (Ohms) = 0.8 – 1.6
  • Secondary (Ohms) = 6000 – 30,000

Verify resistance between coil case and primary terminal is infinite. Replace coil if resistance measurements are not within specifications.

Nov 142016
 

1998 Ford WindstarMy dome light will not go off. I made sure all doors are closed good. and the door jams is clean


RESPONSE

The most common reason would be from a failed door ajar switch(door open warning lamp switch). The switch is located on the door latch assembly.

door ajar switch

Door Courtesy Lamp Switch Input/ Door Ajar Switch

System responds to door ajar switch as follows:
•The generic electronic module (GEM) uses the door ajar switch input for two different rear air suspension system functions:
◾preventing vents when a door is open to avoid the possibility of the vehicle lowering and the door catching on an obstruction.
◾servicing a correction immediately, if needed.
•The liftgate and both front door switches close to ground when opened, while the sliding door switch provides ground when closed and opening the door provides an open in the circuit.
•The GEM can sense each door (open or closed) independently.
•If a damaged door ajar switch (door always open) condition exists, the GEM will interpret that a door is open and not vent unless vehicle speed is above 24 km/h (15 mph).
◾Above 24 km/h (15 mph) the GEM disregards all door signals.