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Showing results for tags 'control'.
Found 5 results
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1984 GL-10 Hardtop Coupe FWD. EA81, Carter/Weber carburetor. Fuel pump isn't operating. If I provide fuel down the carburetor the engine will run properly until I stop fueling. Replaced fuel pump, and distributor (to provide proper ignition signal, the shaft had some play). I'm focusing on the Fuel Pump Control Unit (FPCU), but I'm not in a position where I can afford to experiments with a $150 new one without being fully convinced that it will remedy my situation. I need actual diagnostic information about this box specifically. Does anyone know the actual function of the FPCU? First off I'm a Subaru dealership technician, so I'm certainly not shooting blind, but I can't find any actual information about the operation of the FPCU. Using the factory service manual, Haynes, and Chiltons manuals I've been able to find almost nothing of what kind of output this module produces. The manuals all basically say " if power and ground are there, tach signal is coming in, then the pump will run." Yes, that's wonderful, but run how? From what I've figured the pump produces a pulsing power signal, since the pump does nothing and blows the breaker in the Powerprobe after a moment when I supply power and ground directly to the pump. A replacement pump (new) had the same result leading me to believe the pump needs a on-off pulsing power source to operate the plunger solenoid. Followup question: Has anyone ever found a way to bypass the FPCU? if it were as easy as a switch or a relay to provide bypassed power to the pump I would have done that, but that was not successful. Can any of the components inside the FPCU be replaced (resistors, capacitors, etc). I implore you USMB and your fountain of knowledge! ~Erik -
Hello All: I have a '91 Loyale that the heater blend door sticks in the vent position. Sometimes after running for a while and generally above 2000 rpm, it will switch to heater or defrost with appropriate button selected. I can hear a vacuum leak somewhere but was wondering if anyone knows where the vacuum lines are and what I would need to disassemble to get to them. I can't find any diagrams or component locations in the database I have access to. Thanks -
I am swapping cruise control into an '01 Legacy L / Brighton, and I need some help troubleshooting the completed install. What I've done so far: - Install cruise main switch, steering wheel controls, actuator and cruise computer - Wire cruise actuator through firewall to cruise computer - Wire cruise computer to all respective wires in the vehicle according to the wiring diagram (this was quite a procedure) - Wired in new 4-wire brake and clutch pedal switches and confirmed it has continuity when no pedals are pressed - Tested and verified all switches, bulbs, ignition power sources, etc - Then I plugged in the cruise module and tried it out, and the light on the cruise control main switch will not come on when I press it (I'm assuming it means 'enable the cruise system'). - I have checked fuse 18 and 15, and backprobed all points from the switch and the bulbs to check that the module genuinely isn't responding, but is otherwise powered. My issue is as follows: The cruise enable switch on the dash does not light up when pressed. Bulb works, switch works, power goes to the cruise module, what else do I check?? UPDATE The cruise module wasn't enabling because the sub-switch output to pin 10 of the cruise module was wired at connector B68 by wire-color and not by pin number. On my particular vehicle (Legacy Brighton L), the wire colors on the steering-wheel side of that harness are incorrect and/or mislabeled in either the vehicle or the wiring diagram. Doing this by pin number means that the cruise module now powers on, and the correct 12v signal is seen at the module when the set, resume and cancel buttons are operated, respectively. The issue now is that it will not set cruise, when driving over 40km/h - the switches do not do anything. I need to troubleshoot whether something is inhibiting the cruise system from setting, or whether it is trying to set the cruise, but the actuator is not working. Any ideas are welcome. Please let me know what you guys think is the best next-step to take to get this working. Some photos of the progress Image 1 Image 2 Image 3 Image 4 Image 5 -
Howdy. We have a 1999 Legacy Outback in overall good working order (it has a rebuilt motor less than 3 years old which runs great). When I depress the lever and engage the cruise control - the car goes into cruise control, but slows 4 to 6 miles per hour, depending on the overall speed. It will then hold that speed just fine. To cruise at 65 mph, I would have to engage it at 70 or 71 to allow for the slow down. It is bothersome to say the least. Is this going to be a computer problem, electrical, or more mechanical - like a bad CC unit in the steering column ? Any other ideas would be great. Is this something a garage can electronically diagnose? Thanks, Craig -
I recently purchases a beautifully clean '87 GL-10 Turbo equipped with a working Pneumatic Height Control System. Works great, feels great, and looks great... BUT (those of you who are familiar with the system were waiting for that but...) I noticed that when I'm riding on the higher setting (when the system is engaged and the car is fully raised) and I turn RIGHT, there is a knocking wobbling sound coming from the front right wheel. Once I get going straight again, the sound tappers off and goes away until I turn right again. Any ideas?