2001 Chevy Impala no start after starter change

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Jul 142018

Chevy Impala

Just replaced the battery and starter and had the alternator checked. Alternator was good. It won’t start or turn over but lights and radio and ac comes on.

First check the in line fusible links. Then check the Crank Relay located in the underhood junction block. Use the provided wiring diagram to help with your auto repair.

Starting System Wiring Diagram – 2001 Chevy Impala

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Turn Signal Bulb Replacement 1988 Oldsmobile Delta 88

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Jul 142018

I have a 1988 Oldsmobile 88 with a burned out turn signal. I am trying to figure out how to reach the bulb to change it out. Can’t seem to reach it from the top. Do I pull the whole headlight assembly out? If so, how? Or is there an easier way? Maybe up on a ramp and get to it from underneath?

Turn Signal Bulb Replacement – 1988 Oldsmobile Delta 88

The replacement of all the light bulbs is straightforward. First look for the easiest way to access the connector. If you can reach under the car to the connector with your hand, then you won’t need to remove the lens assembly. When there is no way to reach the bulb or the connector, you must check for an access cover or see if the lens cover has screws. If the lens is secured by screws, removing the lens would be best access to the bulb. If the lens has no screws showing on the outside of the vehicle, then access is from the back side. Once you have access to the bulb, simply grasp the connector and turn counterclockwise to align the slots, then remove the bulb from the lens housing.

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No transmission oil dipstick Chrysler Town and Country

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Jul 102018

Chrysler Town and Country

I am wanting to check my transmission fluid level and possibly change the fluid and filter but am unable to locate the dipstick or fill port. The engine is a 3.6 liter and the transmission is the 41TE type.  Any advise… TKs..

No transmission oil dipstick

I only show this model coming with a 62TE transmission. Must use Mopar Automatic Transmission Fluid Plus 4 or equivalent. Will require 5.50 qts for service.

Your vehicle does not have a dipstick installed from the factory. A special tool is used to check the transmission fluid level. The transmission Oil Dipstick (special tool #9336A, Dipstick) has indicator marks every 10 mm. I have double checked to make sure this one will fit your 2012 Chrysler Town And Country. Comes complete with instructions.


Along with fluid level, it is important to check the condition of the fluid. When the fluid smells burned, and is contaminated with metal or friction material particles, a complete transaxle recondition is probably required. Be sure to examine the fluid on the dipstick closely. If there is any doubt about its condition, drain out a sample for a double check.

MOPAR® ATF+4 (Automatic Transmission Fluid) when new is red in color. The ATF is dyed red so it can be identified from other fluids used in the vehicle such as engine oil or antifreeze. The red color is not permanent and is not an indicator of fluid condition. As the vehicle is driven, the ATF will begin to look darker in color and may eventually become brown. This is normal. ATF+4 also has a unique odor that may change with age. Consequently, odor and color cannot be used to indicate the fluid condition or the need for a fluid change.

After the fluid has been checked, seat the dipstick fully to seal out water and dirt.

Jul 102018

2014 Nissan Rogue

Air Conditioning high side pressure

I started having issues with my A/C system a while ago. It was not very strong in general and when I drove long distances, after about 20 minutes, there would be on and off cold air.
When I connected a manifold, the values with the engine off were fine but once I turned the engine on, the low side would immediately go into “retard” while the high side would read about 145 psi.
In the past, I hit an object in the front of my car, so I knew that the condenser might have an issue. It was a little bent and with a thermometer, I saw a significant difference in temperature in areas right next to each other, therefore I replaced it. However, since it still gave me the same readings, I also exchanged the compressor. The clutch had been working (actually constantly running) but I never heard it humming.

Still having the same readings.

What else could be the problem? The TXV, evaporator or orifice tube? How can I test them before attempting to replace?

Thank you!

Anytime you replace the Air Conditioning compressor the manufacturer recommends that you flush the entire system. The manufacturer also requires that the orifice tube and accumulator/expansion valve be replaced at the same time. If this is not done the manufacturers warranty is void.  With that in mind if you are getting a higher reading there may still be a restriction.

Jul 092018

Ford Explorer

I turn my Air Conditioning on max, or any other setting and cold air comes out the main middle vent for about a minute. Then it quits and the air comes out of the defrost vents for a few minutes. And them it starts coming out of the main vent again for just a few minutes to the top and comes out of the defrost vents only. This cycle continues. What is the problem? Thanks for your time. Jeff Duty

The system is designed to divert to defrost when the control panel looses vacuum and this is usually caused by a vacuum leak in the supply line to the controller. Start by locating the vacuum reservoir under the dash on the passenger side and make sure the hose is connected and has good vacuum to it.
The reservoir is #2 in the diagram. If you find good vacuum at the reservoir and no leaks then the control panel will need to be remove and further testing done.

Air Conditioning vent problem

Vacuum Reservoir


Item Part Number Description
1 W701696 Vacuum reservoir screw
2 19A566 Vacuum reservoir
3 Vacuum connector (part of 18C581)
Removal and Installation
  1. Remove the vacuum reservoir screw.
  2. Remove the vacuum reservoir.
  3. Disconnect the vacuum connector.
  4. To install, reverse the removal procedure.
Jul 092018

GMC Envoy

Passlock Key No Start

I recently bought this 2002 GMC Envoy. It was sitting for around 6 months after the previous owner had a problem with it and couldn’t afford to fix it. My Envoy did not come with any sort of chipped key and the key I have will work in the ignition but not to unlock the doors. It cranks but won’t start. And the shifter locks and wont go into any gear. Is it the passkey security issue with it? I’ve check fuel pump and it’s working but no fuel at the fuel rail. So I’m figuring it’s got to be something to do with the security system. Is there a way to bypass that for now so I can at least get it started and check for it to run before spending all the money on a new passkey? Any hints or tips would sure help. Thank you very much.

Vehicle Theft Deterrent (VTD) Description and Operation

Passlock™ System

The Passlock™ System is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. If starting is attempted without authorization from the Passlock™ System, the powertrain control module (PCM) will disable engine starting. Start disable may be in the form of fuel disable or starter disable, depending on engine application.

The components of the Passlock™ System are as follows:

  • The ignition lock cylinder and key
  • Ignition lock cylinder case, including the Passlock™ sensor
  • The ignition switch
  • The body control module (BCM)
  • The security indicator on the instrument cluster
  • The powertrain control module (PCM)Ignition Lock Cylinder Case, Including the Passlock™ Sensor

The ignition lock cylinder fits inside the ignition lock cylinder case and operates the ignition switch when turned by a key with the proper mechanical cut. When the ignition key is used to turn the ignition lock cylinder to crank, start, a magnet on the lock cylinder passes close to the Passlock™ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock™ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle.

If a magnet from outside of the ignition lock cylinder case is used to attempt to steal the vehicle, the tamper hall effect sensor will be activated. This completes a circuit from the security sensor signal circuit through a tamper resistor to the security sensor low reference circuit bypassing the security resistor. If the ignition switch is forced to rotate without the correct key, or if the ignition lock cylinder is removed by force, the Passlock™ sensor will be damaged and will not operate.

Ignition Switch

The ignition switch contains the wiring and electrical switching portion of the column mounted ignition assembly. The switch includes wiring pigtails which connect it to the base of column connector, the Passlock™ sensor on the ignition lock cylinder case, and other components. The wiring for the Passlock™ sensor is unaffected by ignition switch position. The electrical switch portion is operated by the key and lock cylinder when they are rotated within the ignition lock cylinder case. The ignition switch operates the crank relay regardless of the status of the Passlock™ System.

Body Control Module (BCM)

The body control module (BCM) contains the logic of the Theft Deterrent System. The BCM provides the battery positive voltage to operate the Passlock™ sensor. The BCM also measures the voltage of the security sensor signal circuit. The voltage measured will indicate whether the Passlock™ sensor has been activated and whether the resistance value from the sensor is a valid value or the tamper value. If voltage measured is in the valid range, the BCM compares this voltage, voltage code, to a previously learned voltage code. If the voltage codes match, the BCM sends a class 2 message containing a password to the powertrain control module (PCM). When the voltage codes do not match, or the voltage is in the tamper range, or there is a circuit fault, the BCM will not send the correct password to the PCM, and the vehicle will not start.

Powertrain Control Module

The powertrain control module (PCM) contains the remainder of the logic of the Theft Deterrent System. If a class 2 message containing a valid password is received from the body control module (BCM), the PCM will continue to allow the fuel injectors to operate. The PCM will allow the fuel injectors to operate until it decides there is no valid password coming from the BCM. If the PCM does not receive a class 2 message, or receives a class 2 message with an incorrect password, the engine will crank and will not run or will start and stall immediately.

Theft System Indicator

The IPC illuminates the theft deterrent indicator as determined by the theft deterrent system. The IPC receives a class 2 message from the BCM requesting illumination.

  • The vehicle theft deterrent (VTD) system requests the IPC to illuminate the indicator only when the ignition switch is ON.
  • The content theft deterrent (CTD) system requests the IPC to illuminate the indicator only when the ignition switch is in the OFF or ACC positions or during RAP.
  • The body control module performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.


Fuel Lockout Cycle

When it receives a password which is incorrect or a password which indicates tamper and the powertrain control module (PCM) disables the fuel injectors, the fuel injectors remain disabled for 10 minutes even if the ignition switch is turned from the RUN position to the OFF position.

Changing the Passlock™ Components

The following components contain codes or passwords, or must learn codes or passwords for the Passlock™ System to allow the vehicle to start:

  • The ignition lock cylinder case
  • The body control module (BCM)
  • The powertrain control module (PCM)

If any of these parts are replaced, a learn procedure must be performed. Refer to Programming Theft Deterrent System Components . If parts are replaced and a learn procedure is not performed, the engine will crank and will not run or will start and stall immediately.

Jun 282018

Dodge Caravan

AC condensation is dripping into the passenger side floorboard.

This is an indication of a clogged evaporator drain plug in the air conditioning system. It is quite common for leaves and dirt to build up and clog this drain. When the drain becomes clogged the condensation builds until it leaks into the passenger floor. You may be able to just slip a screw driver up in the end of it and unclog it. This is easier to get to from underneath.

Ford Evaporator core drain plug location diagram
This a close up of what the tube looks like.
Drain Tube Evaporator core housing

Jun 272018

Chevy Impala

Car is overheating after replacing the radiator, radiator fans, water pump and thermostat. The is fan not working on the passenger side and ac blows hot on one side and cool on the other side.

It sounds like you have more than one problem going on. Neither problem is related to the other. One problem ids the engine overheating. The other problem is the AC blows hot in one side.

Overheating after replacing the radiator

This is pretty common after the cooling system has been worked on. Air is often trapped inside the system and needs to be bled out.

2001 Chevy Impala coolant system bleeding

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AC blows hot on one side

This is very common of a failed blend door actuator. Replacing the failed actuator will take core of the air conditioning problem. The AC will blow cold out both sides once again.

Air Temperature Actuator Replacement – Left Side

Removal Procedure
  • Remove the left instrument panel insulator.
  • Remove the knee bolster bracket bracket.


  • Disconnect the electrical connector from the left air temperature actuator.
  • Remove the mounting screws from the left air temperature actuator.


  • Remove the left air temperature actuator.
Installation Procedure
  • Position the left air temperature actuator, then align the slots in the electric actuator driver to the flats on the shaft.
  • Align the locating hole to the alignment pin on the HVAC module case.
  • Slide the actuator on the shaft. The actuator driver should seat completely on to the shaft and the mounting holes should be flush with the mounting screws on the HVAC module case.
  • Install the mounting screws to the left air temperature actuator.

Tighten the left air temperature actuator screw to 1.5 N·m (13 lb in).

  • Connect the electrical connector to the left air temperature actuator.
  • Install the knee bolster bracket bracket.
  • Install the left instrument panel insulator.