Question about Cars & Trucks
No other buttons will operate
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Posted on Jan 02, 2017
Hi, your post is for a 2000 Chevy Blazer, but your question seems to be for a washing machine. You may want to repost under the proper heading. Thanks...Coop
Posted on Dec 18, 2010
SOURCE: 2000 L series sadan wipers
you need a new wiper motor, the return to rest position circuitry is bad. lucky for you that the whole assembly can be removed from outside the car. i know there are videos of folks doing this on youtube and i have left written instructions a few times on here. but a picture is worth a thousand words.
thing to bear in mind is make sure the switch is in OFF position before you start and find and obey the OFF position stamping on the linkage when you attach the arm to the wiper motor. you will see what i am talking about when it is out and in your hands.
Posted on Feb 04, 2011
SOURCE: 1995 Jeep Grand Cherokee had
Hi since you have code 34 you need first to troubleshoot the code. A shorted vehicle speed control solenoid can cause troubles that affect not only the speed control function. The speed control is connected to the PCM a short in wiring, a problem with VSS, a defective PCM may return an error 34. Try using speed control, and see if any of conditions below occurs. If speed control is working but vehicle is surging test for condition 2.
If there is no speed control , then go straight to the end and test MAF, fuel pressure (pump/pressure regulator) and the evap system. If there are no vacuum leaks those are among most common causes of surges with no codes. Check in any case wiring to VSS (vehicle speed sensor) and PCM connectors. Do test on PCM even if the vehicle has no speed control.
1) SPEED CONTROL ACCELERATING BY ITSELF
Check for diagnostic trouble codes. If you get code 34 perform the following test:
Do the speed control switch test on the RESUME/ACCEL switch (use VOM to read Ohms)
If it fails, replace switch.
If it passes, disconnect the 4 way connector at servo. Test continuity of pin 1 to ground to test for intermittent short. Wiggle wires while preforming test.
If continuity to ground, repair wiring.
If no continuity to ground, replace PCM.
2) SPEED CONTROL SLOWING DOWN BY ITSELF
Test vehicle speed sensor, Refer to If sensor fails replace sensor, if it passes perform the following test:
1. Perform the speed control switch test on the SET/COAST switch, if it fails replace switch.
2. If the switch passes, conduct the vacuum supply test.
3. If it passes, conduct the servo vacuum test, if it fails replace servo.
4. If passed, test continuity on pin 2 of connector to PCM pin 80 for intermittent open. Wiggle wires while performing this test. If continuity to pin 80, repair harness for open.
5. If no continuity, replace PCM.
3) SPEED CONTROL NOT RESUMING
Perform the speed control switch test on the RESUME/ACCEL switch. If the switch fails replace switch.
1. If switch passes, check continuity from RESUME/ACCEL switch connector pin 1 to pin 31 of 40 way connector at PCM. Check for intermittent open circuit, wiggle wires while performing test.
2. If intermittent open, repair circuit.
3. If continuity is ok, preform continuity test from pin 1 of RESUME/ACCEL switch connector to ground. Check for intermittent short, wiggle wires while performing this test.
4. If shorted, repair harness for short.
SPEED CONTROL WILL NOT SLOW DOWN
Check for diagnostic trouble codes. If code 34 or no code present, perform the following test:
1. Conduct the speed control switch test on the resume SET/COAST.
2. If it fails, replace switch.
3. If it passes use an ohmmeter to test continuity between pin 2 of SET/COAST switch connector and ground. Wiggle wires while preforming test. If no continuity repair circuit.
4. If continuity, test continuity between pin 1 of SET/COAST switch connector and pin 41 of the PCM 40 way connector. Wiggle wires while preforming test. If no continuity repair circuit.
5. If continuity, disconnect the servo connector. Test continuity from pin 2 of connector and ground to test for intermittent short. Wiggle wires while preforming test. If continuity repair circuit.
6. If no continuity, conduct the servo vacuum test. If it fails, replace servo.
7. If it passes, replace the PCM
IF SPEED CONTROL, VSS AND PCM WIRING ARE OK:
Check fuel pressure using a gauge attached to fuel lines. Check MAP sensor wiring and clean sensor. Clean generally air intake. Replacing MAP sensor could be a good idea.
If possible try putting into neutral when the engine start jerking, before it surges check TPS.
Check the evaporative emission purge solenoid. Test it using a VOM and make sure that the valve is not stuck open, eventually replace the solenoid. Check PCV valve and the whole evap system. That is often causing the surge. See document here:Jeep Cherokee 1984-1998 Evap System.
Posted on Sep 08, 2011
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