Neon L4-2.0L SOHC (1995)
Throttle Body: Customer Interest
Throttle Body - High Effort to Move Accelerator Pedal
NO: 18-20-95 Rev. A
GROUP: Vehicle Performance
DATE: Dec. 8, 1995
SUBJECT:
Increased Throttle Effort to Move Accelerator Pedal from Idle Position
Note:
This Bulletin supersedes Technical Service Bulletin 18-20-95 dated June 9, 1995 which should be removed from your files. Repair procedure (B) has
been added to reprogram the Powertrain Control Module.
MODELS:
1995 (PL) Neon
SYMPTOM/CONDITION:
Increased effort required to move the accelerator pedal from the idle position.
DIAGNOSIS:
Inspect the accelerator pedal attachment, throttle cable routing and attachments at the throttle body. If there are no kinks, binds or other obstructions that
would contribute to increased throttle pedal effort, proceed to the repair procedure.
EQUIPMENT/PARTS REQUIRED:
1
4318037
Mopar Brake Parts Cleaner
AR
4669034
Throttle Body Base Gasket (used only with vehicles equipped with
aluminum intake manifold)
1
NPN
Scotch Brite Pad (Green) or Equivalent
1
CH6000
Scan Tool (DRB III)
1
CH7035
General Purpose Interface Bus Cable (GPIB)
1
CH7015
Engine Cable
1
4669020
Label - Authorized Software Update
1
4275086
Label - Authorized Modification
REPAIR PROCEDURE (A):
This bulletin involves removing the throttle body and cleaning any residue that has accumulated on the throttle blade and throttle body bore. In addition,
this bulletin also involves erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration change).
1.
Remove the throttle body from the engine.
2.
While holding the throttle open, spray the throttle body bore with Mopar Brake Parts Cleaner, P/N 4318037. Spray the entire throttle body bore
and the manifold side of the throttle blade.
NOTE:
Use only Mopar Brake Parts Cleaner P/N 4318037 as the use of other cleaners may damage components of the throttle body. Use this cleaner
only in a well ventilated area. Do not let this cleaner come in contact with the skin. Rubber or butyl gloves are recommended. Wash thoroughly
after use. Avoid eye contact. Avoid ingesting.
3.
Use a small (1" x 1") piece of green Scotch Brite scuff pad to clean the throttle body bore and throttle blade. While holding the throttle open, clean
both the top and bottom of the throttle body bore. Also clean the manifold side and edges of the throttle blade.
NOTE:
It is important this cleaning operation be performed thoroughly and completely. The edge of the throttle blade and the portion of the throttle
body bore that is in the closest proximity of the closed throttle blade are the most critical areas where the cleaning should be concentrated.
These areas must be free of all deposits when the cleaning is completed.
4.
Spray the throttle body with Mopar Brake Parts Cleaner, P/N 4318037, and then blow dry with compressed shop air. Inspect for any foreign
material which may have been left behind from the cleaning process.
NOTE:
