B150 1/2 Ton Van V8-318 5.2L (1985)
Powertrain Control Module: Customer Interest
ECM - Warm Surge At Steady Speed
Models
1985 Trucks Equipped With 5.2L-2BBL Engine, O2 Feedback Carburetor System & Automatic Transmission With California Emissions Package
Subject
Warm Surge at Steady Speed
Index
DRIVEABILITY
Date
June 24, 1985
No..
18-29-85
SYMPTOM/CONDITION
Vehicle will exhibit a surge at steady speeds with engine at full operating temperature.
PARTS REQUIRED
Driveability Package PN 4397618
Contains:
1 Vacuum Delay Valve
PN 4173433
1 Hose Routing Label
PN 4179843
Must be ordered separately:
1
ESA Module
PN 4289977
1
CVSCC
PN 4095231
1
Authorized Modification Label
PN 4275086
REPAIR PROCEDURE
1.
Remove existing ESA module (PN 4289637) and install supplied ESA module, PN 4289977.
2.
Drain coolant and remove existing CVSCC (coolant vacuum switch cold closed) and install supplied CVSCC, PN 4095231.
3.
Cut one 1-1/2" section of 3/16" vacuum hose, PN 4105167 (serviced in 50 foot rolls).
4.
Install the 1-1/2" section of 3/16" hose on the natural colored end of the vacuum delay valve, PN 4173433, supplied in package.
5.
The EGR solenoid is mounted on the fender shield (right side of engine compartment). It can be identified by a "white" right angle vacuum
connector.
Remove the white right angle vacuum connector on the EGR solenoid and install the delay valve assembly on the EGR solenoid. The 1-1/2" piece of
3/16" hose is attached in place of the removed white right angle connector.
