Top 10 2003 Dodge Caravan Questions & Answers

Your problem is in the evaporative emission system which is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, even small ones, can allow fuel vapors to escape into the atmosphere. The light coming on can be caused by one of the following:

1. Defective or loose fuel cap
2. EVAP canister or hose cracked- not connected
3. Purge or vent solenoid defective
4. Vacuum leak at engine Government regulations require on-board testing to make sure that the evaporative (EVAP) system is functioning properly. The leak detection system tests for EVAP system leaks and blockage. It also performs self-diagnostics. You have tried the easy fix, the gas cap. Finding the leak now will require special equipment and testing procedures, might be better left to a professional.

Please let me know if this information is helpful. Positive feedback is appreciated. Thank You!

The MassAirFlow sensor on a Dodge Caravan is usually mounted in the air intake between the air filter and the throttle body, located on the intake manifold.
Sometimes mass air flow sensors are mounted directly to the throttle body.

Here is the pic:

Removal & Installation
CAUTION The Supplemental Inflatable Restraint (SIR) system must be disarmed before removing the blower motor assembly. Failure to do so may cause accidental deployment of the air bag, resulting in unnecessary SIR system repairs and/or personal injury.

1. Disconnect and isolate the negative battery cable, then wait 2 minutes before proceeding with the removal. This will effectively disable the air bag system preventing possible personal injury.
   
2. Remove the glove box from the instrument panel
   

The blower motor is located behind the glovebox, behind the blower motor cover

2. Remove the A/C-heater blower motor cover.
   
4. Disconnect the blower motor wiring connector.
   
5. Remove the blower motor wiring grommet and feed the wiring through the blower motor housing.
   
6. Remove the blower motor mounting screws.
   

Once the cover is removed, unplug the electrical connector and push it through the opening in the housing


The blower motor is secured to the housing with three small screws

1. Allow the blower motor assembly to drop downward to clear the instrument panel and remove from vehicle.
   

To install:

1. Place the blower motor assembly into position on the A/C-heater unit and tighten the mounting screws.
   
2. Route the blower motor wiring through the blower motor housing and seat the wiring grommet in the hole of the blower motor housing.
   
3. Reconnect the blower motor electrical connector.
   
4. Install the A/C-heater blower motor cover.
   
5. Install the glove box into the instrument panel.
   
6. Reconnect the negative battery cable. Check blower motor operation.
   

P0700 (M)
Check Transmission DTC's
This code indicates that the EATX (Transmission controller) has an active fault and has illuminated the MIL via a BUS message. The specific fault must be acquired from the EATX via a DRBIII tool. (Input or Output Speed Sensor failures often cause this code and are a common failure part on WJ Grand Cherokees

P0750
Shift Solenoid circuit.
Note: If code P1767 (Transmission Relay Always On) is also present: Replace transmission solenoid assembly. See note provided. When transmission is in limp mode the relay that provides power to the solenoid group is switched off. This is normal and is designed to provide operation in one gear only. Engineering department suggests to replace transmission solenoid assembly anytime these two trouble codes occur together. See applicable service manual section (21) for solenoid assembly replacement directions. IMPORTANT: When performing this repair always check torque on all valvebody accumulator cover plate screws. Proper torque specification is 70 inch pounds. If any accumulator cover plate screws are damaged or missing replace the valvebody assembly. NOTE: If any other trouble codes are present do not replace solenoid assembly. See test in the applicable Transmission Diagnostic Procedures Manual

P0755
Shift Solenoid B

Is your Trac Off Light also on? If so this could be one more area to check. These are integrated and can affect each other. If the wheel speed sensors are bad (and they do fail more than reported) The will need to be removed, cleaned, checked and re-installed or replaced. The ABS Light will come on if the wheel speed sensors are malfunctioning.
IF NO Trac Off Light:
On my 2002, I removed the battery, battery tray, and access the ABS system located just below the master cylinder. It should have several brake lines going into a metal portion, along with a black plastic box like electrical panel connections. I remove the electrical connection (to the right side) Use a mirror to see the whole set up from behind to remove the electrical connection. There are 4-bolts holding the black body panel onto the silver body. Remove these bolts.
There should be holes in the black box panel you are detaching, and silver rod shaped that insert/go into these holes left on the metal box.
I had to only clean and lubricate the holes and rods, as they had become dirty and corroded with oxidation. After cleaning, I re-attached, replugged the connection and checked operation. The ABS light went out and the ABS was checked and everything worked fine.
If you do this and the light does not go out, then you could have a problem with the wheel sensors or the ABS Actuator itself. In most cases that you take it to a garage/mechanic, they will cite the ABS system that has to be replaced and that may not be the necessary case. Mine just needed the holes and rods to be cleaned.
Let me know if this helped and if you have additional information or questions. Feel free to contact me at FixYa.com!

p0731 transmission shift problems
p0841 solinoid problems in the transmission
p0846 fluid level
p0700 solinoid stuck or sticking hard shifting
there is a solinoid in the transmission that shifts the trans and downshifts when stopping this is a problem you generally don't want to do your self

I understand the coolant temperature sensor on a 2003 caravan is located just under the coil.
There are two sensors located in that position, it's the one toward the passenger side of the car.
I'm changing mine in the morning so I will know for sure and if it's not there I will return and correct this post.

Replacing spark plugs (2003 caravan); can be done from the top, reach around the engine (not over) from the transmission side to get to the rear spark plugs, I have done this twice.

THE 2.4L ENGINES USE 5W-30 3.3L AND 3.8L ENGINES USE 5W - 20

Dodge Caravan does not have a reset button.