Nov 122019

Chrysler Town and Country

Won’t start or run all sensors are new got spark gas and air it gives codes

An engine requires 4 things and at the right time.

  1. Fuel – injector pulse and fuel pressure
  2. Spark – ignition spark
  3. Air – metered air flow
  4. Compression

So a compression test and timing are left for you to check.

Lets dig into the codes. When I have multiple codes I like to look for something common that might cause all the codes. I have the codes listed below along with the possible causes. It appears as though the common factor would be the PCM.

P0123 – Throttle/Pedal Position Sensor / Switch A Circuit High

Code P0123 Possible Causes
  • Throttle Position Sensor Sweep
  • Intermittent Condition
  • (K22) TP Signal Circuit Shorted to (K6) 5 Volt Supply Circuit
  • (K22) TP Signal Circuit Shorted to Battery Voltage
  • TP Sensor Failure
  • (K22) TP Signal Circuit Open
  • (K4) Sensor Ground Circuit Open
  • PCM

P1598 – A/C Pressure Sensor Volts Too High

Code P1598 Possible Causes
  • Intermittent Condition
  • (C18) A/C Pressure Sensor Signal Circuit Shorted To (F855) 5-Volt Supply Circuit
  • (C18) A/C Pressure Sensor Signal Circuit Shorted To Battery Voltage
  • A/C Pressure Sensor Internal Failure
  • (C18) A/C Pressure Sensor Signal Circuit Open
  • (K900) Sensor Ground Circuit Open
  • PCM

P1496 – 5 Volt Supply Too Low

Code P1496 Possible Causes
  • Intermittent Condition
  • Throttle Position Sensor
  • MAP Sensor
  • A/C Pressure Sensor
  • EGR Solenoid
  • (F855) 5-Volt Supplied Shorted To Ground
  • PCM

P1193 – Inlet Air Temp Sensor Voltage High

Code P1193 Possible Causes
  • IAT sensor voltage above 4.6 volts
  • (K21) IAT Sensor signal circuit shorted to battery voltage
  • IAT Sensor internal failure
  • (K21) IAT sensor signal circuit open
  • (K900) Sensor Ground Circuit Open
  • PCM
Oct 082019

1998 Chrysler Sebring

I recently purchased a 1997 Chrysler Sebring convertible with a 2.5l  engine knowing it needed a fuel pump and filter. I replaced that and the engine turns over but will not start. The check engine light doesn’t work and I have found no power coming from the PCM to the speed, crank,or cam sensor. The PCM relay cuts on and the fuses are good. Do I need to replace the PCM?

First thing that comes to my mind is, did you prime the fuel system after replacing the fuel pump and fuel filter? This will cause a crank, no start condition. To do this all you need to do is cycle the ignition key 10 times. Each time waiting 5 seconds while in the ON position.

Did you check for spark at the spark plugs?

How to Replace Fuel Pump

Breeze, Cirrus, Sebring Convertible & Stratus

1. Release fuel system pressure as outlined under Fuel Pressure Relief.

2. Disconnect battery ground cable.

3. Raise and properly support vehicle.

4. Disconnect electrical connector and fuel supply lines from fuel pump module.

5. Properly drain and remove fuel tank.

6. Disconnect fuel filter lines from pump module.

7. Clean top of tank to remove loose dirt and debris.

8. Using fuel pump module ring spanner tool No. 6856, or equivalent, remove lock ring to release pump module.

9. Remove pump module and O-ring. Discard O-ring.

10. Reverse procedure to install, noting the following:

a. Install new O-ring.

b. Using ring spanner tool No. 6856, or equivalent, torque lock ring to 40 ft. lbs.

Fuel System Pressure Test

Fuel system pressure should be released any time a fuel line is to be disconnected.

1. Relieve fuel system pressure as described under Fuel Pressure Relief.

2. Remove fuel supply hose quick connector from chassis lines at engine.

3. Connect fuel pressure gauge tool No. C-4799, or equivalent, to fuel pressure adapter tool No. 6539, or equivalent, then install adapter between fuel supply hose and chassis fuel line assembly.

4. Place ignition switch in On position, engine Off. Using DRB scan tool, access Auto Shutdown (ASD) fuel system test. This test will activate fuel pump and pressurize system. When using ASD fuel system test, Auto Shutdown (ASD) relay remains energized either for seven minutes, until test is stopped, or until ignition switch is turned to Off position.

5. Observe gauge. If reading is 39 psi, further testing is not required. If pressure is at least 5 psi higher than specified, replace fuel filter.

6. If pressure is still above specifications, remove fuel return hose from chassis fuel lines at engine.

7. Attach fuel pressure test connector adapter tool No. 6541, or equivalent, to fuel return hose, then place other end into an approved two gallon gasoline container. If pressure is now correct, check for restricted fuel return line. If no change is observed, replace fuel pressure regulator.

8. If fuel pressure is lower than specified, gently squeeze fuel return hose. If pressure increases, replace pressure regulator.

9. If there is no change in pressure by squeezing fuel return hose, check for a plugged inlet strainer or defective fuel pump.

10. Remove test equipment, then connect fuel lines.

11. Check system for leaks.

Sep 232019


I have a P1193 Possible bad IAT connector, I checked the voltage
and it came up at 00.6 . How do i fix this problem of a high voltage ? It is a 2003 Chrysler Voyager LX with a 3.3 L Engine.

Chrysler Code p1193 – Inlet Air Temperature Sensor Voltage High

When monitored: With the ignition on and the battery voltage greater than 10.4 volts.

Set Condition: The inlet air temperature (IAT) sensor circuit voltage at the PCM goes above 4.9 volts for 5 seconds.

Code P1193 Possible Causes

  • IAT Sensor voltage above 4.6 volts
  • (K21) IAT sensor signal circuit shorted to battery voltage
  • IAT Sensor internal failure
  • (K21) IAT Sensor signal circuit open
  • (K900) Sensor ground circuit open
  • PCM

How to test the IAT for Code P1193

  1. Turn the ignition ON. With the DRBIII, read the IAT voltage. Is the voltage above 4.6 volts?
  • Yes -> Go To 2
  • No -> Refer to the intermittent condition and perform Powertrain Verification Test Ver – 5

2. Turn the ignition OFF. Disconnect the IAT Sensor harness connector. Turn the ignition ON. Measure the voltage of the (K21) IAT Sensor Signal circuit in the IAT Sensor harness connector.

Is the voltage above 5.2 volts?

  • Yes -> Repair the short to voltage in the (K21) IAT Sensor Signal circuit. then Perform Powertrain Verification Test Ver – 5.
  • No -> Go To 3

3. Turn the ignition OFF. Disconnect the IAT harness connector. Connect a jumper wire between the (K21) IAT Sensor Signal circuit and the (K900) Sensor Ground circuit in the IAT harness connector. Turn the ignition ON. With the DRBIII, read IAT Voltage.

Is the voltage below 1.0 volts?

  • Yes -> Replace the IAT Sensor. Perform Powertrain Verification Ver – 5.
  • No -> Go To 4

4. Turn the ignition OFF. Disconnect the IAT harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K21) IAT Sensor Signal circuit between the IAT Sensor harness connector and the PCM harness connector.

Is the re4sistance below 5.0 ohms?

  • Yes -> Go To 5
  • No -> Repair the open in the (K21) Sensor Signal circuit. Perform Powertrain Verification Ver – 5.

5. Turn the ignition OFF. Disconnect the IAT Sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K900) IAT Sensor Ground circuit between the IAT Sensor harness connector and the PCM harness connector.

Is the re4sistance below 5.0 ohms?

  • Yes -> Go To 6
  • No -> Repair the open in the (K900) Sensor Ground circuit. Perform Powertrain Verification Ver – 5.

6. NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. If there are no possible causes remaining, view repair.

  • REPAIR – Replace and program the PCM.
  • Perform Powertrain Verification Ver – 5.
Jul 262019

Chrysler town and country

I took the 3.8 good motor from my old 1999 town & country, and i bought a 2002 town & country with a 3.8 bad motor. Will the good engine from the 1999 fit in the 2002, and if so, what parts would not work, for the engine.

The engine will fit. However you will be giving up horsepower.

  • 1998–2000: 3.8 L EGH V6, 180 hp (130 kW), 240 lb⋅ft (330 N⋅m)
  • 2000-2007: 3.8L EGH V6, 215 hp (160 kW), 245 lb⋅ft (332 N⋅m)

The long block of each engine should be the same so all other existing components should bolt up with ease.

Jun 132019

Chrysler Town and Country

van is fine under 45 mph. Once over 45, it starts to “bump” – rough ride like something is wrong with a tire or something. (tires are fine.)

Is it the torque converter?

If your car shakes and shudders, it could mean the lockup clutch is malfunctioning. This might occur at speeds around 35-45 miles per hour. It’s a noticeable problem and feels like you’re driving on a road with lots of small bumps. A worn out lockup clutch can make the transition from acceleration to direct drive difficult, and it’s a sign that you need to have your transmission checked.


Jun 052019

Chrysler 300How does the wiring harness on the anti-lock brake control module unhook? Is there something I have to do to be able to pull it off?  Did not want to pry on it too much. Was wondering if there is a release somewhere on it?

  • Depress tabs on each side of connector cover, then
  • Pull outward and upward on the lower half of cover until it locks into position pointing straight outward(2). Connector can then be pulled straight outward off ABM(1)


May 032019

1998 Chrysler Sebring

I was told I have a blown head gasket but these guys just seemed so unprofessional and would not answer any of my questions. So I’m wondering can it be a blown head gasket if there is no coolant leaks no misfires no white smoke. The only symptom my car has is it overheats when the car warms up when I stop the coolant in the overflow tank is boiling or bubbling. When they ran tests the said there was combustible gases in my coolant. Thank you.

If you are uncomfortable with the mechanic shop you took your car to, exercise your right to take it somewhere else. A compression test is a good place to start when diagnosing a blown head gasket.

A pressure gauge can be installed to the cooling system to detect excessive pressure. Most cooling systems pressure is under 20 psi. When engine cylinder compression enters the cooling system the pressure gauge would spike and exceed this amount. An engines compression in each cylinder can be 100 psi or more.

Boiling Coolant

Boiling coolant usually indicates a poor mixture. The coolant to water ration should be 50/50. Straight water will allow the engine to overheat quickly. So if the cooling system has been worked on recently and just topped off with water, it may be the cause.

Low Coolant

When the cooling system is low on coolant it will overheat as well. If this is the case, finding the leak and repairing it would be the best course of action.

May 032019

1964 Chrysler 300K

I have a 413CI RB big block in this car. I am needing to replace the rear main seal next week, so I am shopping for a seal kit. These are the options I have, which would be the best choice? 1. Felpro 2-Piece, Fluoroelastomer seal; 2. Mr Gasket Rear Main Seal, 2-Piece Silicone; 3. Felpro 2-Piece, Rubber Rear Main Seal; or 4. Felpro Rear Main Seal, 2-Piece, OEM-Style Rope Thanks

To narrow down the choices one might consider the installation tools. You will need a rear main seal installation tool with a bridge to install the rope seal properly.


An example of installation of rope seal without the proper tool.

I wouldn’t venture to say that any one seal is the best choice. They are all designed to perform the same function.

Mar 112019

Chrysler Sebring

Engine cranks but will NOT turn over. Changed battery, and got P1684-ECM reset code, no other codes follow. Check engine light flashes 5 times after initial “on” position. Not sure how to calculate the flashes. Need to know the flash count calc. Please advise.

Ok, I’m thinking that the PCM…aka engine computer….is either “shut down” by a shorted sensor or this is an indication that the PCM will need replacing.

Try unplugging the cam sensor. This is located on the passenger end of the front cylinder head. Crank the engine over for a minimum of 10 seconds with the cam sensor unplugged. I’m looking to see if the engine will start this way…….that is why you need to crank it so long.

P1684 CHRYSLER – Battery Power To Module Disconnected

Possible causes

  • Battery was recently disconnected
  • Transmission Control Module (TCM) was replaced or disconnected
  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module (TCM) harness is open or shorted
  • Transmission Control Module (TCM) circuit poor electrical connection

Malfunction Indicator Lamp, Diagnosis & Testing

The Malfunction Indicator Lamp (MIL) is located on Instrument Panel Cluster (IPC). The MIL informs driver that an emission system fault has occurred and that engine control system requires service. The Engine Control Module (ECM) monitors MIL control circuit for conditions that are incorrect for commanded state of MIL. For example, a failure condition exists if ECM detects low voltage when MIL is commanded OFF, or high voltage when MIL is commanded ON.

Any MIL requesting DTCs that may be set should be diagnosed first.

1. Understand and validate customer concern. Inspect visible system components for obvious damage or conditions that may cause concern.

2. Inspect for related bulletins, recall/field actions and preliminary information.

3. Verify symptom is not exclusively a mechanical concern.

4. Connect a suitably programmed scan tool, perform Vehicle DTC Information function and verify at least one control module communicates with scan tool.

5. Verify there are no control module Internal hardware performance DTCs set.

6. Ignition ON, command MIL ON and OFF with scan tool. MIL should turn ON and OFF as commanded.

7. Ignition ON, command MIL ON and OFF with a scan tool while observing following control circuit status parameters:

a. MIL control circuit low voltage test status.

b. MIL control circuit open test status.

c. MIL control circuit high voltage test status.

d. Each parameter should toggle between OK and Not Run or Not Run and OK.

8. Ignition OFF, disconnect MIL electrical harness connectors. Ignition ON, MIL should not illuminate. If MIL is illuminated, test MIL control circuit terminal for a short to ground. If circuit tests normal, replace cluster.

9. Ignition ON, connect a 3A fused jumper wire between MIL control circuit terminal and ground. MIL should illuminate. If MIL does not illuminate, test MIL control circuit for a short to voltage, or an open/high resistance. If circuit tests normal, replace MIL bulb.

10. If all circuits/connections test normal, replace ECM.

Powertrain Control Module (PCM) 1999-2007

Anytime the PCM is replaced the VIN and vehicle mileage must be programmed into the new PCM. If the PCM is not programmed, Diagnostic Trouble Codes (DTCs) will set. To program the PCM, connect a DRB or suitably programmed scan tool to the Data Link Connector (DLC) and follow scan tool manufacturers instructions. On models equipped with the Sentry Key Immobilizer System (SKIS), program secret key as follows:

If the PCM and the SKIM are replaced at the same time, all vehicle keys will need to be replaced and programmed to the new SKIM.

  1. Turn ignition switch on and place transmission in park/neutral.
  2. Use scan tool and select THEFT ALARM, SKIM then MISCELLANEOUS.
  4. Program vehicle four digit PIN into SKIM.
  5. Select COUNTRY CODE and enter correct country.
  6. Be sure to enter correct country code. If incorrect country code is programmed into SKIM, SKIM must be replaced.
  7. Select YES to update VIN (the SKIM will learn the VIN from the PCM).
  8. Press ENTER to transfer secret key (PCM will send secret key to SKIM).
  9. Program ignition keys to SKIM.