Jul 202017
 

2003 Ford Escape

No spark

No spark. My camshaft position sensor and crankshaft position sensor are good. I test no power at coil packs. I checked fuses and  not sure how to proceed from here.


According to the chart it would appear the next step would be to look at the ignition system wiring, voltage regulator.

The PCM controls sends the voltage to the ignition coils. Maybe the signal wires from the sensors or the wires coming from the PCM or the PCM itself.

Ignition Coil Wiring Diagram 2003 Ford Escape

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Jul 202017
 

1999 Toyota 4Runner

I have replaced the thermostat and gasket and I am trying to replace the water outlet gasket also. There is a metal bar across the housing of the water outlet that is the L and R fuel line for the injectors. I need to be able to move that line in order to get to the housing and replace the gasket. How can I do that?


REMOVE DELIVERY PIPES AND INJECTORS

  • Be careful not to drop the injectors when removing the delivery pipes.
  • Pay attention to put any hung load on the injector to and from the side direction.
  1. Remove the 4 bolts and delivery pipes together with the 6 injectors.
  2. Remove the 4 spacers from the intake manifold.
  3. Pull out the 6 injectors from the delivery pipes.
  4. Remove the 2 O-rings and insulator from each injector.

Fuel rail 1999 Toyota 4runner

 

Jul 182017
 

2008 Saturn Vue

AC problem blowing hot

08 Saturn Vue 3.6 engine has an AC problem blowing hot at stoplights. Mechanic diagnosed it, replaced the expansion valve and radiator fan assembly and performed evac and recharge to no avail. Mechanic is unavailable right now. Any ideas on what else could be the culprit?


Sounds like they were on the right track as far as thinking the high speed fan wasn’t functioning. A new fan was installed but I wonder if the issue is in a high speed relay or something. Lets pull up the Cooling fan wiring diagram and take a look.

Cooling fan wiring diagram 2008 Saturn Vue

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It looks like there might be a couple of relays in there that you could swap around for testing.

Air Conditioning System Description and Operation

A/C Cycle

Refrigerant is the key element in an air conditioning system. R-134a is a very low temperature gas that can transfer the undesirable heat and moisture from the passenger compartment to the outside air.

The A/C compressor

The A/C compressor is belt driven and operates when the magnetic clutch is engaged. The compressor builds pressure on the vapor refrigerant, which adds heat to the refrigerant. The refrigerant is discharged from the compressor through the discharge hose and is forced to flow to the condenser and then through the balance of the A/C system. The A/C system is mechanically protected with the use of a high pressure relief valve. If the high pressure switch/sensor were to fail or if the refrigerant system becomes restricted and refrigerant pressure continues to rise, the high pressure relief will open and release the excess pressure refrigerant from the system.

Compressed refrigerant enters the condenser in a high temperature, high pressure vapor state. As the refrigerant flows through the condenser, the heat of the refrigerant is transferred to the ambient air passing through the condenser. A cooling fan assists in the airflow especially when Parked. Cooling the refrigerant causes the refrigerant to condense and change from a vapor to a liquid state.

The condenser

The condenser is located in front of the radiator for maximum heat transfer. It is made of aluminum tubing and aluminum cooling fins, which allows rapid heat transfer for the refrigerant. The semi-cooled liquid refrigerant exits the condenser and flows to the Receiver/Dehydrator(R/D).

The R/D contains desiccant that absorbs moisture that may be in the refrigerant system. The R/D also acts as a storage vessel to ensure that a steady flow of liquid reaches the Thermal Expansion Valve (TXV). The refrigerant exits the R/D and flows through the liquid line to the TXV.

The TXV is located at the front of dash and attaches to the evaporator inlet and outlet pipes. The TXV is the dividing point for the high and the low side pressures of the A/C system. As the refrigerant passes through the TXV, the pressure on the refrigerant is lowered. The TXV also meters the amount of liquid refrigerant that can flow into the evaporator.

Refrigerant exiting the TXV flows into the evaporator core in a low pressure, liquid state. Ambient air is drawn through the HVAC module and passes through the evaporator core. Warm and moist air causes the liquid refrigerant to boil inside of the evaporator core. The boiling refrigerant absorbs heat from the ambient air and draws moisture onto the evaporator. The refrigerant exits the evaporator through the suction line and back to the compressor in a vapor state, and completes the A/C cycle of heat removal. At the compressor, the refrigerant is compressed again and the cycle of heat removal is repeated.

The conditioned air is distributed through the HVAC module for passenger comfort. The heat and moisture removed from the passenger compartment condenses and is discharged from the HVAC module as water.

1927 Willys Whippet manual choke cable

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Jul 152017
 

1927 Willys

Manual choke and manual spark advance

My 1927 Willys Whippet has both a manual choke and manual spark advance, both cables operate through knobs on the dash. The car runs best with both pushed all the way in. However, as I drive along, both the choke and spark advance knobs slowly start to slide out, on their own, causing the car to sputter and lose power. I find myself having to push the knobs back in every couple of minutes as I am driving. There must be a way to fix this.

You can see the choke knob to the right of the wheel


Adding a return spring comes to mind. But you want to be able to adjust the cable and lock it in place. Since this is a common need there have been some manufactured. You can replace the existing cable with one of these locking cables and your all set. Measure the length of the cable you have. If it is 72″ or less you can get away with this stylish design for under $50.

Adjustable Locking Cable


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Or this one for under $15 I found on ebay;

Locking Throttle Control Cable

lockable throttle cable

Jul 152017
 

Chevy Cavilier

Will not start

My 2003 Chevy Cavalier will not start. The engine spins and the car is getting fuel pressure to the fuel rail. I was driving and suddenly it stalled out. It would not turn on. I had to tow it home. The battery, alternator, starter, are good. And the fuel pressure is good at 50psi. My car has new Spark plugs and oil. I also changed out the crankshaft position sensor. Can you please help me figure out whats wrong with my vehicle.


We have created a diagnostic chart for just an occasion.

Wheel moves sideways Chrysler Concorde

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Jul 152017
 

2004 Chrysler Concorde

Wheel moves sideways

When I lift the front wheel up, I noticed that the wheel moves sideways. What do you think would be the cause of this? My car is a 2004 Chrysler Concorde.


First of all, checking to see if the wheels move sideways is a test that is performed to check for hub bearing failure. This sideways motion is an indication of hub bearing failure. You will need to have this repaired sooner than later. Seems like you would have heard some noise as well. Must be why you decided to inspect the front end. As a result it turned out to be a good thing you did. Probably not what you wanted to find. So at least now you know what needs to be replaced. Furthermore I have provided you with the part you need and the instructions on how to do it yourself if you have the tools.

Hub Bearing Description

The front wheel bearing and front wheel hub of this vehicle are a hub and bearing unit type assembly. This unit combines the front wheel mounting hub (flange) and the front wheel bearing into a sealed one piece unit. Since they are one unit, they are commonly referred to as the hub bearing. The hub bearing is mounted to the center of the steering knuckle and is retained by three mounting bolts accessible from the rear of the steering knuckle. The hub flange has five wheel mounting studs.

The wheel mounting studs used to mount the tire and wheel to the vehicle are the only replaceable components of the hub bearing assembly. Therefore, the hub bearing is serviced only as a complete assembly.

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Hub Bearing Operation

The hub and bearing has internal bearings that allow the hub to rotate with the driveshaft and tire and wheel. The five wheel mounting studs mount the tire and wheel, and brake rotor to the vehicle.

Jul 142017
 

2000 Ford F150

Starting problems

I’m having starting problems. It cranks over just fine but will not fire. This has happened 4 times in the last 3 years. After letting it sit over night, it will fire right up as if nothing had been wrong.
I’ve tried doing the following with no positive results;

1. Sprayed starting fluid in the intake while cranking the engine.
2. Tried locking/unlocking the door to see if it was a security/anti-theft issue.
3. Installed a new battery.
4. Installed a new fuel filter.
5. The ignition key is the chip type, so I tried using my spare key.
6. Disconnected the battery then reconnected it after a couple minutes.
Please help me resolve the problem.


Is the check engine light on?

First if there is a check engine light on it would be the best place to start. Pull any codes and post them below in the comments. For now we will assume the check engine light is not illuminated. Next we need to determine what the engine is not getting when it will not start.

Once we know what the engine isn’t getting we can concentrate on the “Why” of your starting problems. Since you tried spraying starting fluid in the engine and got nothing there is a good chance you do not have spark. This would be a common cause for starting problems. We can check for spark and confirm this with a spark tester.

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Engine Ignition

The ignition system consists of the following:
The ignition system is:
  • an electronic distributorless ignition system (EDIS) controlled by an electronic engine control (EEC) integrated into the powertrain control module (PCM).
  • set at 10 degrees before top dead center (BTDC) for base timing and it is not adjustable.
The ignition coil :
  • changes low voltage pulses from the powertrain control module to high voltage pulses.
  • sends high voltage pulses to the spark plugs through the spark plug wires.
  • has three transformers.
  • has six spark plug wires, one to each end of each transformer.
  • is mounted on top of the intake manifold.

Spark plug wires carry high voltage pulses from the ignition coil to the spark plugs.

The spark plugs:
  • change high voltage pulses to spark at gap which ignites fuel and air mixture.
  • have a platinum-enhanced active electrode for long life. The active electrode is different for LH and RH sides.

Original spark plugs on the RH side (cylinders 1, 2 and 3) spark plugs are AGSF-34EG.

Original spark plugs on the LH side (cylinders 4, 5 and 6) are AGSF-34E.

Replacement spark plugs are AGSF-34EE; the electrodes are platinum-enhanced and can replace either a RH or LH spark plug.

The crankshaft position (CKP) sensor:
  • is a variable-reluctance sensor.
  • senses a missing tooth on crankshaft damper pulse ring.
  • generates a crankshaft position signal which is sent to the powertrain control module. The powertrain control module counts this signal for engine rpm and spark advance.
Jul 122017
 

2001 Oldsmobile Alero

Starts then dies

Owned vehicle from 70,000 -166,000 current mileage. I have reset Passlock several times. But this time it starts then dies. I removed battery 30+mins cleaned terminals .replaced.left ignition on AAC for 10mins turn off pull key tried starting same as before starts and dies it recently had new ignition coils plugs wires module $1200 .the shift lever button popped off couple years ago( Hockey tape works great ) all fuses look good maybe ?auto shutdown relay? At same time car stopped so did door locks/trunk release..can hear fuel pump.


My first guess would be the ignition switch. I think these had an issue with the ignition switches. But when it will not start you should determine if it isn’t getting spark, fuel or both. Also check for fuel injector pulse. I do not see a relay involved according to the wiring diagrams.

Starting System wiring diagram 2001 Oldsmobile Alero 2.4L

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Anti-Theft wiring diagram 2001 Oldsmobile Alero

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Starter Circuit Description (LA1)

Moving the ignition switch to the START position sends a 12 V to the PCM Ignition Crank Voltage Sense. At the same time a 12 V signal is sent through the PNP switch then through the coil side of the STARTER relay. The PCM verifies that all parameter a met for starting. The PCM then grounds the control circuit of the START relay. When the START relay is energized it allows voltage to the starter solenoid S terminal.

Jul 062017
 

Chrysler Town and CountryDash shows in reverse while in park and will not start, if you try down shift into neutral it will only skip and go into drive still will not start.


Maybe the gear selector switch(Transmission Range Sensor) needs to be adjusted or replaced. Use the wiring diagram to assist in tracing the wiring if needed.

Transmission Wiring Diagram 2006 Chrysler Town and Country

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Jul 052017
 

 Ford Focus

How to release air pressure from my air conditioner?

I’m wondering how to release air pressure from my air conditioner? I was told that I have too much which is making my air blow out hot air.  It is a 2011 Ford Focus. Thank you…


You will need to have this done with an air conditioning recovery machine. Just about any local auto repair shop will have one of these.

Overfilling the air conditioning system is more common than you might think. This happens even more often on newer vehicles. The newer air conditioning systems only require a small amount of Freon making it easier to overfill. Older vehicles used to requires as much as 4 to 5 lbs. Nowadays you will see 1 to 1/5 lbs.

Freon Fill Capacity – 2011 Ford Focus

R-134a Refrigerant 0.51 kg(18 oz)(1.12 lb)

Air Conditioning (A/C) System Recovery, Evacuation and Charging

  1. Prior to recovering, the purity of the refrigerant must be verified.
  2. Connect a R-134a Refrigerant Management Machine to the low- and high-pressure service gauge port valves following the operating instructions provided by the equipment manufacturer.
  3. Recover the refrigerant from the system following the operating instructions provided by the equipment manufacturer. Note the amount of oil removed during the refrigerant recovery (if any). Add that same amount back into the system once repairs are complete.
  4. Once the R-134a Refrigerant Management Machine has recovered the refrigerant, switch OFF the power supply.
  5. Allow the system to set for about 2 minutes, and observe the system vacuum reading. If the vacuum is not lost, disconnect the recovery equipment.
  6. If the system does lose vacuum, repeat Steps 3 through 5 until the vacuum level remains stable for 2 minutes.
  7. Carry out the required repairs.

Refrigerant System Evacuation Using a R-134a Refrigerant Management Machine

  1. Connect a R-134a Refrigerant Management Machine to the low- and high-pressure service gauge port valves following the operating instructions provided by the equipment manufacturer.
  2. Evacuate the system until the low-pressure gauge reads at least 99.4 kPa (29.5 in-Hg) of vacuum and as close to 101.1 kPa (30 in-Hg) as possible. Continue to operate the Vacuum Pump for a minimum of 45 minutes.
  3. Turn OFF the Vacuum Pump. Observe the low-pressure gauge for 5 minutes to make sure that the system vacuum is held.

Refrigerant System Evacuation Using a R-134a Manifold Gauge Set and Vacuum Pump

NOTE: Leaks in refrigerant system service equipment, hoses or gauges can cause a leak in vacuum that may be misinterpreted as a problem with the vehicle’s refrigerant system. It is necessary to leak-test all refrigerant system service equipment, hoses and gauges on a weekly basis to verify that no leaks are present.

  1. Connect the R-134a Manifold Gauge Set to the low-side and high-side service gauge port valves.
  2. Connect the center (yellow) hose from the R-134a Manifold Gauge Set to the suction port on the Vacuum Pump.
  3. Open all valves on the R-134a Manifold Gauge Set and both service gauge port valves.
  4. Turn on the Vacuum Pump and evacuate the system until the low-pressure gauge reads at least 99.4 kPa (29.5 in-Hg) of vacuum and as close to 101.1 kPa (30 in-Hg) as possible. Continue to operate the Vacuum Pump for a minimum of 45 minutes.
  5. Close the high-side and low-side valves on the R-134a Manifold Gauge Set (not the service gauge port valves) and turn OFF the Vacuum Pump.
  6. Observe the low-pressure gauge for 5 minutes to make sure that the system vacuum is held. If vacuum is not held for 5 minutes, leak test the system, repair the leak and evacuate the system again.

Refrigerant System Charging Using a R-134a Refrigerant Management Machine

  1. Lubricate the refrigerant system with the correct amount of clean PAG oil.
  2. Connect a R-134a Refrigerant Management Machine to the low-side and high-side service gauge port valves following the operating instructions provided by the equipment manufacturer.
  3. Set the refrigerant charge amount, and charge the refrigerant system following the instructions provided by the equipment manufacturer.

Refrigerant System Charging Using a R-134a Manifold Gauge Set and Automatic Refrigerant Charging Meter

NOTE: Ford Motor Company recommends use of a R-134a Refrigerant Management Machine to carry out charging of the refrigerant system. If a R-134a Refrigerant Management Machine is not available, refrigerant system charging may be accomplished using a separate Automatic Refrigerant Charging Meter and R-134a Manifold Gauge Set.

  1. Lubricate the refrigerant system with the correct amount of clean PAG oil.
  2. Assemble the R-134a Manifold Gauge Set, Automatic Refrigerant Charging Meter and R-134a supply tank following the Automatic Refrigerant Charging Meter operating instructions.
  3. Charge the refrigerant system following the Automatic Refrigerant Charging Meter operating instructions.
  4. If the refrigerant flow stops before the refrigerant charge is complete, start the engine, select MAX A/C operation and allow the refrigerant charge to complete.