2003 Dodge Caravan Wining

Tiny
BREITMEYER
  • MEMBER
  • 2003 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 115,000 MILES
There is a wining noise that gets somewhat louder and faster when the accelerator is pushed in and seems to me is louder when the outside temperature falls below 70 F. This happens at idle as well as when moving but it seems to be worse when turning from a standstill. I've had several mechanics check it and no one can seem to find the problem. It's been going on for over 5 years. Any thoughts would be most appreciated.
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Monday, December 29th, 2008 AT 2:51 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
If it gets worse when you turn the steering, it sounds like the power steering pump may be the problem. Make sure the fluid is full. Also, you could remove the serp belt to see if the sound goes away, but DON'T run the engine without the belt for more than a few seconds because there will not be coolant circulating and the engine WILL OVERHEAT and it could cause damage.

Let me know what you find.

Joe
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Thursday, January 1st, 2009 AT 2:15 PM
Tiny
MOFASTA
  • MEMBER
They have known issues with these vans on this, I fixed a 2005 grand caravan yesterday on this issue. After checking the fluid level hot or warm with motor off, if it is at proper level for hot you may try adding a 1/4 in of fluid past max level sometimes this will resovle problem assuming know one has added the wrong type of fluid to system. Dodge recomends using ATF+4 SYNTHETIC FLUID, thats right transmission fluiid I would check your owners manual and with dealer if not sure. Heres a little info I've dug up (Suspension & Steering) If a shudder is felt while turning the vehicle at low speeds, replacing the power steering hoses with revised hoses may be necessary. Also consider installing a finned power steering cooler.
A moaning or fog horn sound may be heard while turning at a slow speed. Installing a finned power steering cooler will help alleviate the problem. THIS BULLETIN SUPERSEDES SERVICE BULLETIN 19-004-03, DATED AUGUST 29,
2003, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A COMPLETE
REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT REVISIONS.
SUBJECT:
Steering Shudder
OVERVIEW:
This bulletin involves replacing one of the two power steering cooler hoses with a new
longer power steering hose and if necessary, installing a fin packed power steering cooler.
MODELS:
2001 - 2005 (RS) Town & Country, Caravan, Voyager
2001 - 2005 (RG) Chrysler Voyager (International Markets)
NOTE: This bulletin applies to right hand and left hand drive vehicles equipped with
a 3.3L or 3.8L engine (sales code EGA, EGM, EGH) built on or before
December 8, 2004 (MDH 1208XX)
SYMPTOM/CONDITION:
A shudder (vibration) is felt inside the vehicle while turning the steering wheel at idle or
during low speeds such as a parking lot maneuver. The shudder may be felt in the steering
wheel, seat, and/or body.
DIAGNOSIS:
1. Verify the condition: - Perform stationary turns and/or low speed turns in drive and
reverse. Perform the evaluation with the A/C in the on and off position. Is steering
shudder detected?
A. Yes >> Go to Step #2.
B. No >> Further diagnosis is needed, this bulletin does not apply.
2. Inspect for the presence of a power steering finned cooler. Is a finned cooler
present?
A. Yes >> Go to "Replace Power Steering Hose - Step #1" .
B. No. >> Go to "Install Finned Cooler - Step #1" .
NUMBER: 19-006-05
GROUP: Steering
DATE: August 4, 2005
PARTS REQUIRED:
Qty. Part No. Description
AR 05135964AA 11/32" Hose, Bulk Power Steering Return
Vehicles built on or before September 13, 2004
(MDH 0913XX)
One roll will service multiple vehicles
AR 04364392 5/8" or 11/16" Convolute Tubing
Vehicles built on or before September 13, 2004
(MDH 0913XX)
One roll will service multiple vehicles
AR (1) 04743473AE Line, Power Steering Return, With Cooler
AR
(2 Straps)
04856501
(Package of 50 straps)
Tie Strap, Cable Tie
One package will service multiple vehicles
AR 05166226AA Fluid, Power Steering (MS9602)
INSTALL FINNED COOLER:
CAUTION: Throughout the following procedure, special care should be taken to
prevent introducing contamination into the power steering system.
1. Open the hood.
2. Remove the cap from the power steering fluid reservoir.
3. Using a siphon pump/suction gun, remove as much power steering fluid as possible
from the power steering fluid reservoir.
4. Remove and save the constant tension spring clamp securing the power steering
return line hose to the power steering fluid reservoir.
5. Remove the rubber hose portion of the power steering return line from the power
steering fluid reservoir fitting.
6. Drain the power steering fluid reservoir into an appropriate container.
NOTE: This fluid should not be reused to avoid introducing contamination from the
container.
7. Raise the vehicle on an appropriate hoist.
8. Remove the fuel vapor canister.
9. Locate the bracket connecting the power steering return line cooler loop to the cradle
reinforcement plate (Fig. 1).
19-006-05 -2-
Fig. 1 POWER STEERING COOLER LOOP
1 - SUSPENSION CRADLE 5 - COOLER LOOP MOUNTING FASTENERS (SAVE FOR
FINNED COOLER INSTALLATION)
2 - J/U NUT CLIP (DISCARD) 6 - PRESSURE LINE
3 - CRADLE REINFORCEMENT PLATE 7 - COOLER LOOP (DISCARD)
4 - FUEL VAPOR CANISTER 8 - SWAY BAR
10. Remove the fasteners connecting the cooler line to the reinforcement plate. Save the
fasteners for use in Step #17.
11. Locate the bracket connecting the power steering pressure line to the cradle
reinforcement plate (Fig. 1).
12. Remove the fastener connecting the bracket to the reinforcement plate. Save the
fastener for use in Step #18.
13. Remove and discard the J/U nut clip on the bracket.
14. Locate and unscrew the tube nut connecting the power steering return line to the
steering gear pinion housing.
NOTE: The tube nut will remain loosely assembled to the power steering return line.
15. Drain the remaining fluid into an appropriate container and discard the loop cooler line
that was removed from the vehicle.
NOTE: This fluid should not be reused to avoid introducing contamination from the
container.
16. Install the new power steering return line, p/n 04743473AE. Attach the power steering
return line tube nut to the steering gear pinion housing and tighten to 27.1 - 35.0 N m
(240 - 310 in. Lbs.).
17. Reuse the fastener removed in Step #10. Install the fastener into the left weld nut on
the cooler fin pack bracket and the left hole in the cradle reinforcement plate. Tighten
the fastener to 9 - 11.3 N m (80-100 in. Lbs.) (Fig. 2).
-3- 19-006-05
Fig. 2 POWER STEERING FINNED COOLER
1 - FINNED COOLER FASTENERS (INSTALLED POINTING UPWARD)
2 - SWING THE PRESSURE LINE CLAMP BACK INTO POSITION WITHOUT THE J/U NUT
3 - FINNED COOLER
18. Line up the pressure line bracket and the right weld nut in the cooler fin pack bracket.
Reuse the fastener removed in Step #12. Install the fastener through the right hole in
the cradle reinforcement plate, the fin pack bracket and the pressure line bracket.
Tighten the fastener to 9 - 11.3 N m (80-100 in. Lbs.) (Fig. 2).
19. Install the fuel vapor canister.
20. Lower the vehicle.
21. Install the constant tension spring clamp removed in Step #4 onto the rubber hose on
the power steering return line. Slide the clamp so that it is 3 inches from the end of the
rubber hose.
22. Push the end of the rubber hose portion of the power steering return line onto the
power steering fluid reservoir suction port. Secure the hose by sliding the constant
spring tension clamp installed on the hose in the last step, to within 6 mm (0.25 in.) Of
the end of the rubber hose. Be sure the hose clamp is installed past the bead on
fluid reservoir fitting.
23. Check the vehicle production date. Was the vehicle built on or before September
13, 2004 (MDH 091344XX)?
A. Yes >> Go to "Replace Power Steering Hose - Step #1" .
B. No >> Go to "Steering/Pump - Standard Procedure - Step #1" .
19-006-05 -4-
REPLACE POWER STEERING HOSE:
1. Cut 850 mm (33.5 in.) Of power steering hose (p/n 05135964AA) or equivalent.
2. Cut 790 mm (31 in.) Of 15.9mm (5/8 in.) Or 17.5 mm (11/16 in.) Convolute tubing. Place
the convolute tubing around the power steering hose.
3. Open hood and remove the power steering reservoir cap.
4. Raise the vehicle on an appropriate hoist.
5. Locate the power steering cooler attached to the crossmember support. Remove the
forward (closest to front of vehicle) hose from the cooler and tube. Drain the power
steering fluid in an appropriate container.
6. Remove the two tension clamps from the removed hose and install on the new power
steering return hose.
7. Install the new hose and tension clamp onto the power steering cooler.
8. Wrap the hose clockwise around the perimeter and on top of the power steering cooler
as shown in (Fig. 3). Install the hose and tension clamp to the power steering return
tube.
Fig. 3 HOSE ROUTING - STANDARD COOLER ON LEFT, H/D COOLER ON RIGHT
1 - COOLER RETURN TUBE (CLOSEST TO FRONT OF
VEHICLE)
4 - TIE STRAP LOCATIONS
2 - RETURN TUBE TO RESERVOIR 5 - POWER STEERING COOLER
3 - CROSSMEMBER SUPPORT 6 - POWER STEERING COOLER HOSE (ROUTE CLOCKWISE)
9. Use two tie straps to strap the return hose to the power steering cooler and pressure
steering hose shown in (Fig. 3).
10. Lower vehicle and open hood.
11. Proceed to "Steering/Pump - Standard Procedure" .
-5- 19-006-05
STEERING/PUMP - STANDARD PROCEDURE
WARNING:FLUID LEVEL SHOULD BE CHECKED AND ADJUSTED WITH ENGINE
OFF TO PREVENT INJURY FROM MOVING ENGINE COMPONENTS.
CAUTION: Use only Mopar ATF+4 Automatic Transmission Fluid (MS-9602) in
power steering system. Use of other Mopar power steering fluids
(MS5931 and MS9933) should be avoided to ensure peak performance of
the power steering system under all operating conditions. Do not overfill.
Read the fluid level through the side of the power steering fluid reservoir. The fluid level
should be within "FILL RANGE" when the fluid is at a temperature of approximately 21 C
to 27 C (70 F to 80 F).
1. Wipe the filler cap and area clean, then remove the cap.
2. Fill the fluid reservoir to the proper level and let the fluid settle for at least two (2)
minutes.
3. Start the engine and let run for a few seconds, then turn the engine off.
4. Add fluid if necessary. Repeat the above steps until the fluid level remains constant
after running the engine.
5. Raise the front wheels off the ground.
6. Start the engine.
7. Slowly turn the steering wheel right and left, lightly contacting the wheel stops.
8. Add fluid if necessary.
9. Lower the vehicle, then turn the steering wheel slowly from lock-to-lock.
10. Stop the engine. Check the fluid level and refill as required.
11. If the fluid is extremely foamy, allow the vehicle to stabilize a few minutes, then repeat
the above procedure.

With all aboved mentioned I would try the fluid level first then check too see if it has a cooler for power steering if it does try putting longer hoses for more fluid & cooling, if doesn't have a p/s cooler you can pick one up at local parts store for around 20.00 dollars are so. The cooler will be located under rack & pinion with 2 rubber hoses conected to it. If none of this solves the problem you may want to replace the power steering pump also, which is not aeasy task.

Hope this will help
mofasta
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Thursday, January 8th, 2009 AT 6:52 AM

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