C-4 Repair's

C-4 Repair's C-4 Repair's is by appointment only. Please feel free to call for appointments. Labor Rate: $75.00 per hour

06/28/2025

Just a quick update. I'm now spinning wrenches at Louie's Garage. Chris was an old acquaintance of mine and needed some help.

05/08/2019

Still nothing new to share

08/11/2015

I know I haven't posted anything in awhile. So here are some things to search. Maybe you'll find what you need for a proper fix!

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08/11/2015

Vehicle: 2010 Hyundai Santa Fe GLS 2.4L, L4, MFI, DOHC, VIN B, Eng Version Theta II
Mileage: 118,244
Customer Concern: The check engine light is on with an Intake Manifold Runner Performance (Bank1) code P200A.
Tests: 1. Check the resistance of the Variable Charge Motion Actuator (VCMA) motor from terminal 4 to terminal 5. The specification is 3.4 to 4.4Ω at 68 degrees fahrenheit.

2. With the key on, actuate the VCMA motor with a compatible scan tool and confirm the change of VCMA feedback sensor signal and the sound of operation. The specification is about 0.84 volts open and about 4.16 volts closed.

3. If your scan tool will not operate the VCMA motor, backprobe and monitor the VCMA position sensor signal at terminal 2 Black/Orange wire with the key on and apply battery voltage to the motor at terminal 5 Orange wire. Pulse a ground at terminal 4 Pink wire and the position sensor signal voltage should change. Then reverse and apply battery voltage at terminal 4 and pulse a ground at terminal 5 to move it the other way. The specification is about 0.84 volts open and about 4.16 volts closed. The VCMA motor is duty-cycled by the Engine Control Module (ECM) at 50% duty.

4. If the motor is not moving, remove it and verify that the shaft will rotate by hand or if it is stuck in the intake. If it will rotate by hand verify that the motor will operate when not attached to the shaft and if it won't, it has likely failed.
Potential Causes:
Upper Intake Manifold
Variable Charge Motion Actuator (VCMA)
Confirmed Fix: Replaced Variable Charge Motion Actuator (VCMA): Replaced the VCMA and cleaned the intake.
Tech Tips: The Variable Charge Motion Actuator (VCMA) adjusts the runner valve to one of two positions, open or closed. The VCMA system tumbles air flow entering into combustion chamber of each cylinder by closing the VCMA valve in cold start conditions. This valve doesn't have mechanical return spring. If the PCM detects that the opened or closed stop position is out of the specified value, it sets P200A.

08/11/2015

Vehicle: 2005 Lincoln Town Car Executive 4.6L, V8, MFI, SOHC, VIN W, GAS
Mileage: 117,000
Customer Concern: The Right Front (RF) cornering lamp is on all the time whether the ignition is on or not, unless the parking lights are turned on.
Tests: 1. Disconnect the multifunction switch and look for the light to stay on or turn off.

2. If the light goes out with disconnection of the multifunction switch, it would support a shorted multifunction switch.

3. If the light is still on with the multifunction switch disconnected, disconnect the RF cornering light bulb and check for the presence of voltage to the bulb on the Brown/White (BR/WH) wire verifying it is shorted to a hot-at-all-times circuit of the harness running between the RF bulb and the multifunction switch connection. Inspect the harness and address the short, or cut the circuit as the RF cornering light bulb and the multifunction switch and run a replacement circuit between those two connections.
Potential Causes:
Shorted Multifunction Switch
Shorted Cornering Light Bulb Wiring
Confirmed Fix: Replaced Cornering Light Bulb Wiring: The circuit was cut and a new wire run between the multifunction switch and bulb connections.

08/11/2015

Vehicle: 2008 Volkswagen Eos lux 2.0L, L4, MFI, DOHC, Eng Desg BPY
Mileage: 115,029
Customer Concern: The driver's seat does not recline.
Tests: 1. Check the wiring and connector to the power seat switch assembly and to the Driver's Entry Assistance Control Module J572. Check for any signs of damage, moisture, corrosion, etc.

2. With a factory compatible scan tool, check to see if the Driver's Backrest Adjustment Switch E96 is being recognized.

A. Select Address Word 63-Entry Assist Driver.

B. Select Function 08-Read Measuring Value Block (MVB).

C. Enter Display Group 005. The 1st field should change as the seat height, inclination and seat back adjustment buttons are operated.

3. Pin T6ax/6 Brown (BR) at the seat adjustment switches should be a good ground at all times.

A. This pin goes to ground at Ground Connection 44 on the lower left A-Pillar.

4. Pin T10t/1 Lilac (LI) at the seat adjustment switches should have B+ present with the Driver's Backrest Stop Switch -Aft- F382 closed.

A. This power comes from fuse S44 and goes through the F382 switch before going to the E96 switch.

5. Pin T10t/4 Red/Lilac (RO/LI) at the seat adjustment switches should have B+ present with the Driver's Backrest Stop Switch -Fore- F381 closed.

A. This power comes from fuse S44 and goes through the F381 switch before going to the E96 switch.

6. Manually energize the Driver's Backrest Adjustment Motor V45 from the seat switches and verify operation. Pins T10t/5 Red/Grey (RO/GR) and T10t/7 Grey (GR) are for the V45 motor. The polarity of the pins will make the motor move in one direction or the other.

A. This should also cause the scan data for switch operation to change when energized.
Potential Causes:
Open Fuse(s)
Defective Driver's Backrest Adjustment Motor V45
Failed Driver's Backrest Adjustment Motor V45 Wiring
Defective Driver's Backrest Adjustment Switch E96
Failed Driver's Backrest Adjustment Switch E96 Wiring
Defective Driver's Entry Assistance Control Module J572
Confirmed Fix: Repaired Driver's Backrest Adjustment Switch E96 Wiring

08/11/2015

Vehicle: 2003 Chevrolet Express 1500 Base 5.3L, V8, MFI, OHV, VIN T, GAS
Mileage: 128,179
Customer Concern: No start, no fuel pressure. Replaced the fuel pump and relay, still no fuel pressure.
Tests: 1. Remove the fuel pump relay and check for power at one terminal from fuse 12 (20 amp).

2. One terminal should get 12 volt power when the key is turned on for about 2 seconds and also when the engine is cranking. This is from the Powertrain Control Module (PCM) pin 9 of the Green connector, a Dark Green/White wire.

3. One terminal should be a good ground to G102 and the other terminal should have continuity to the pump. Putting 12 volts on the pump terminal should show 12 volts at the pump with the pump plugged in. If the voltage is low at the pump there is a wire problem between the relay and pump, inspect the connections under the under hood fuse block.

4. Verify the pump ground is good and the frame ground to the battery is good.
Potential Causes: Under Hood Fuse Block Wiring
Fuel Pump Ground Wiring
Frame Ground
Confirmed Fix: Repaired Frame Grounds: Added a ground to the frame.

08/11/2015

Vehicle: 2004 Honda Accord EX 3.0L, V6, MFI, SOHC, Eng Desg J30A4
Mileage: 165,000
Customer Concern: P0970. Problem in the A/T clutch pressure control solenoid valve C circuit. The trouble code set after the transmission was replaced.
Tests: 1. Check the internal continuity of the clutch pressure control solenoid valve C, specification is 3-10Ω. Compare to clutch pressure control solenoid valves A and B. Solenoids A and B are on top of the transmission, they are a linear pack with color coded brown and black connectors. Solenoid C is on the front of the transmission by the starter.

2. Check pin 2 of clutch pressure control solenoid valve C, Black wire, for a good ground. This should have 0.05 V drop or less. Add a ground as needed. Check G151 on the transmission.

3. Check for a duty-cycled power to clutch pressure control solenoid valve C on pin 1 Green/Red wire when commanded. You should be able to command this with a scan tool. Check the wiring between clutch pressure control solenoid valve C and PCM pin C22, check wire for open or short, load test wire.

4. Power clutch pressure control solenoid valve C manually, check the amperage draw of clutch pressure control solenoid valve C, compare to A and B. Replace as needed.
Potential Causes:
A/T Clutch Pressure Control Solenoid Valve C
Clutch Pressure Control Solenoid Valve C Wiring
Clutch Pressure Control Solenoid Valve C Ground
Powertrain Control Module (PCM)
Confirmed Fix:
Replaced A/T Clutch Pressure Control Solenoid Valve C
Tech Tips: This is an electrical circuit code that sets when the PCM sees 0.2 amps or less with a commanded duty cycle of 57-89% or when the PCM sees 0.4 amps or less when the command is 89% or more.

08/11/2015

Vehicle: 2006 Mazda MPV ES 3.0L, V6, MFI, DOHC, Naturally Aspirated, Eng Version Duratec
Mileage: 35,000
Customer Concern: The vehicle stalls intermittently. When this happens the injector waveform loses its inductive spike, it drops to ground for a few m/s and then hops back up to 12 V in a nice clean square wave.
Tests: 1. When the injector pattern is acting up, check for good power to the injectors on the Red wire. Use a headlight bulb to load the circuit, this should light a headlight bulb no problem.

2. If it does not light a headlight bulb, check for power on the Yellow wire coming out of the main relay, this should light the headlight bulb as well. If it does not, check the White wire going into the relay. If the power on the White wire is OK but the Yellow wire is low, the main relay may have failed. If power going into the relay is low, check the injector fuse for good power.

3. If power going into and out of the main relay is OK, check for good power at pin B Yellow wire of connector C-03. This is a junction connector under the battery tray. Check power through the connector on the Blue wire. Possible bad connection.
Potential Causes:
Failed Main Relay
Failed Engine Compartment Fuse Box
Corroded C-03 Connector
Damaged C-03 Connector
Loose C-03 Connector
Confirmed Fix: Bypassed C-03 Connector
Tech Tips: On this car the power at the fuel injector was good enough to light an incandescent test light but not a headlight bulb. The male terminal for the injector circuit was bent and touching the male terminal for the EVAP, EGR, and a few other solenoids. This connection was good enough that it would run the injectors sometimes and sometimes not.

08/11/2015

Vehicle: 2005 Ford Freestyle SEL 3.0L, V6, MFI, DOHC, Naturally Aspirated, Eng Version Duratec
Mileage: 98,000
Customer Concern: The air bag light is on and self-test of the Restraint Control Module (RCM) resulted in code B1884.
Tests: 1. Locate the Passenger Air Bag De-activation (PAD) light and verify the light has power to it on the White (WH) wire from fuse 24 (7.5 amp).
The indicator light is located in the center stack of the instrument panel above the radio.

2. With the light connector plugged in, there should be battery voltage on the Tan/Light Blue (TN/LB) wire running to the Restraint Control Module (RCM) unless the light is illuminated, at which point the TN/LB wire will show to be grounded.

3. If the light does not illuminate even though battery voltage is present on the WH wire and the TN/LB wire does not have voltage, it will suggest a faulty PAD light.

4. If both circuits show battery voltage with the light plugged in and it does not illuminate, check the TN/LB for an open circuit running to pin 24 of the C310a connector of the RCM and repair it as needed.
Potential Causes:
Passenger Air Bag Deactivation (PAD) Indicator
Passenger Air Bag Deactivation (PAD) Indicator Wiring
Passenger Air Bag Deactivation (PAD) Indicator Connector
Confirmed Fix: Repaired Passenger Air Bag Deactivation (PAD) Indicator Connector: The light was not firmly connected.

08/11/2015

Vehicle: 2012 Honda Pilot Touring 3.5L, V6, MFI, SOHC, Eng Desg J35Z4
Mileage: 36,000
Customer Concern: Code B2633 Front Bus Failure code is set in the Parking and Back-up Sensor System.
Tests: 1. Swap the left-front and right-front corner parking sensors with the rear corner sensors. See if code B2633 sets. If the failure moves to the rear, move the sensors back to the front one at a time to see which one the failure follows.

2. Check the wiring between left and right front corner sensors. Pin 1 Green wire at the left sensor goes to pin 2 at the right. Pin 3 Purple wire at the left sensor goes to pin 4 at the right. Pin 5 Red wire at the left sensor goes to pin 6 at the right. Check the wiring between C201 and sensors if an open circuit is noted. C201 is a 23-pin Blue connector by the under dash fuse box.

3. Check the wiring between the left corner sensor and the parking sensor control unit. Pin 2 Red wire at the sensor goes to pin 16 at the control unit. Pin 4 Grey wire at the sensor goes to pin 4 at the control unit. Pin 6 Blue wire at the sensor goes to pin 2 at the control unit. If wiring is open, check the wiring between control unit and C203, and the sensor and C203. C203 is a 24 pin White connector that is clipped to the side of the under dash fuse box.
Potential Causes:
Parking Sensor
Parking Sensor Control Unit
Confirmed Fix: Repaired Parking Sensor Wiring Harness: Damaged from collision.

08/11/2015

Vehicle: 2011 Chevrolet Silverado 3500 HD WT 6.6L, V8, MFI, VIN 8, Eng Desg LML
Mileage: 119,358
Customer Concern: Engine Control Module (ECM) code: P0546.
Tests: 1. Check Exhaust Gas Temperature (EGT) sensor 1 in ECM data.

2. If the code is current, the EGT temperature will indicate a very high temperature, such as 1800°F or higher.

3. Also, the sensor signal voltage will be over 2.2 volts to set this code.

4. Access the EGT 1 sensor, disconnect the sensor, test the sensor signal voltage and ground.

5. The Dark Blue wire should have 5 V on it with ignition key ON.

6. The Brown wire should be a ground, supplied by the ECM.

7. With the EGT 1 sensor connected, the Dark Blue wire voltage should be less than 2.2 volts. NOTE: Higher temperatures will cause higher resistance in a proper EGT sensor, which in turn should cause a higher voltage value on the Dark Blue wire.
Potential Causes: Failed Exhaust Gas Temperature (EGT) Sensor 1
Broken Exhaust Gas Temperature (EGT) Sensor 1 Wiring
Confirmed Fix: Repaired Exhaust Gas Temperature (EGT) Sensor 1 Wiring: Problem with wire/terminal at the ECM. The Brown wire was not tightly connected to the ECM, causing a loss of ground for the EGT 1 sensor.
Tech Tips: The EGT 1 sensor is at the rear of the engine, in the exhaust.

Address

2586 State Route 57
Stewartsville, NJ
08886

Telephone

+19083199995

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