TPS/Solenoid Valve - Manual Revisions
86chrysler11Models
1986 Colt
Subject
Service Manual Revision - Solenoid Valve Specifications & Throttle Position Specifications
Index
FUEL
Date
July 28, 1986
No.
14-07-86
P-2758C
The following corrections should be made to the 1986 Colt Import
Service Manual. Insert the attached pages 14-45 and 14-46 into publication #81-270-6011.
POLICY: Information only
INSPECTION - ON VEHICLE
THROTTLE OPENER
1. Check that vacuum hoses and throttle opener control solenoid harness are connected correctly.
2. Disconnect the vacuum hose at the throttle opener nipple.
3. Connect a vacuum pump to the nipple of throttle opener.
4. Set a tachometer.
5. Run the engine at curb idle speed.
6. Apply 300 mmHg (11.8 in.Hg) vacuum by vacuum pump. Make sure engine speed is increased. If engine speed fails to increase, replace the throttle opener/dash pot.
7. Stop the engine.
8. Remove the vacuum pump.
9. Remove the throttle return spring from throttle lever.
10. Disconnect the throttle opener/dash pot rod from free lever.
11. Remove the two attaching screws and remove the throttle opener/dash pot.
12. Install the new throttle opener/dash pot and reconnect the vacuum hose to the nipple.
13. Adjust the throttle opener set engine speed to the specification. Refer to "Service Adjustment Procedures".
THROTTLE OPENER CONTROL SOLENOID VALVE
1. Set the ignition switch to OFF.
2. Disconnect the connector from throttle opener control solenoid valve.
3. Check solenoid valve coil for continuity with a circuit tester (ohm range). If open or short circuit is in solenoid coil, replace solenoid valve.
Solenoid valve coil resistance: Approx. 40 ohms
SOLENOID VALVE
1. Disconnect the solenoid valve connector.
2. Check solenoid valve coil for continuity with a circuit tester (ohm range) between terminals as shown in illustration. If open or short circuit is in solenoid coil, replace solenoid valve. Resistance:
Slow cut solenoid valve (SCSV): 48 to 60 OHM (at 20~C(60~F)) Feedback solenoid valve (FBSV): 54 to 66 OHM (at 20~C(60~F))
3. When removing the slow cut solenoid valve, remove the dash pot/throttle opener.
4. Disconnect the harness for slow cut solenoid valve from connector.
5. Remove the solenoid valve retainer, and then the slow cut solenoid valve from the float chamber cover.
6. Install the new solenoid valve, and reconnect the harness to the connector.
7. Check.
THROTTLE POSITION SENSOR (TPS)
1. Disconnect the TPS connector.
2. Check resistance with a circuit tester (ohm range) between terminals "2" and "3".
3. Check to ensure that when throttle valve is slowly operated from closed to wide opened position, resistance changes smoothly. If resistance is abnormally large or small or it does not change smoothly, replace TPS by the following procedure. Resistance:
Closed throttle: Approx. 500 OHMS
Wide open throttle: Approx. 3000 to 6500 OHMS
4. Remove the nut to remove the accelerator pump link from the throttle shaft.
5. Remove the throttle position sensor assembly.
6. Install the new throttle position sensor assembly to carburetor, and tighten two screws.
7. Install the accelerator pump link to the throttle shaft and tighten the nut.
8. Reconnect the TPS connector.
9. Adjust TPS output voltage. Refer to "Service Adjustment Procedure".
CARBURETOR
REMOVAL
1. Disconnect battery ground cable.
2. Drain coolant down to intake manifold level or below.
3. Remove air cleaner.
4. Disconnect the throttle cable from carburetor.
5. Disconnect the vacuum hoses from carburetor.
6. Disconnect connectors for solenoid valves and TPS.
7. Place a container under fuel fittings of carburetor to catch any fuel that may be trapped in fuel line and disconnect the fuel hoses from the carburetor inlet nipples.
8. Remove carburetor mounting bolts and carefully remove the carburetor from engine. Hold carburetor level to avoid spilling fuel from fuel bowl.