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Showing results for tags 'injector'.
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So this is going to be kinda weird and may take a special type of person to want to help solve. Everything I am interested in getting further input on is from a 1991 subaru legacy....it just so happens to live in a 1983 VW vanagon. I Purchased this van with a 2.2L Subaru swap by Kennedy Engineering. Drove van from Sacramento to San Diego. Did a trip to Nevada, then the van began to have idling issues and when I went to replace the IAC valve, found oil in the intake. Turns out the rings were toast on the old engine. Took it to S&S performance and they put in a new engine. The engine is the only thing that was new. The wiring harness, ecu, intake, exhaust, and all sensors were from the old engine. After a couple weeks of driving the van, the idling issues came back. This is what I am trying to diagnose/fix. Symptoms · New engine ran perfectly for 450 miles · Rough idle developed · Cylinder 1& 2 not firing · Code 24 displaying on OBDI readout o Code for IAC valve New/recently serviced items · New motor from S&S performance o 450 miles on engine · New IAC valve · New TPS sensor · Recently serviced injectors o Done to see if injectors being clogged was the problem o 3 serviced, calibrated flow rates o 1 new o All OEM injectors for 1990-1991 manual Subaru Legacy Diagnosing · Injector #1 and #2 not pulsing o No ticking when listening for pulse with long rod o Injector #3 and #4 can be heard ticking from same test · Swapped connectors from injector #1 à injector #3 and injector #2 à injector #4 o Result: injector #1 and injector #2 began pulsing, injector #3 and injector #4 stopped pulsing. Engine ran worse from only getting power from two improperly timed cylinders. · With ignition ON, measured voltage at (+) ECUterminal for each injector o Result: § Injector 1: 12V (connector F47.13) § Injector 2: 12V (connector F47.12) § Injector 3: 12V (connector F47.11) § Injector 4: 12V (connector F47.26) · With ignition ON, disconnected injector connectors, measured voltage at (+) ECU terminal for each injector o Result: § Injector 1: 0.35V (connector F47.13) § Injector 2: 0.45V (connector F47.12) § Injector 3: 0.0V (connector F47.11) § Injector 4: 0.25V (connector F47.26) · Check Continuity between (+) wires for each injector from ECU pin to injector (+) terminal o Result: § Injector 1: Continuity (connector F47.13) § Injector 2: Continuity (connector F47.12) § Injector 3: Continuity (connector F47.11) § Injector 4: Continuity (connector F47.26) · Check continuity between ground wires for each injector and common ECU ground pin o NOTE: Seems the previous owner or someone had modified ECU. All injectors ground to one pin on the ECU, rather than the way it was originally designed where the injectors had two ground pins. The pin they are all connected to now was originally for the “Backup Power Supply” o Result: § Injector 1: Continuity (connector B48.15) § Injector 2: Continuity (connector B48.15) § Injector 3: Continuity (connector B48.15) § Injector 4: Continuity (connector B48.15) What I think may be the case: · Bad crank or cam sensor causing ECU not to pulse injector #1 and #2 · Faulty ECU Would anyone have any insight on this by any chance?? Any input would be greatly appreciated!
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Hello, I have a 1992 Legacy Wagon, EJ22, AWD. A few days ago the motor would not fire up and has not fired up since. The wagon has not had any motor work done to it for over 3 years. It ran and drove great over these past 3 years. The wagon has never been in an accident. The timming belt was replaced 3 years ago. What I've checked: -Fuses (both under the hood and Under the dash) -Ran the codes (24, 11, 13) -Inspected crankshaft position sensor. Tested sensor and found it to be working and within spec. -Inspected camshaft position sensor. Tested sensor and found it to be working and within spec. -Swapped out both sensors with known working ones just to be sure - no change in problem. ALSO did this test - disconnected crank sensor, connected cam sensor, sprayed fuel into intake, turned over motor, no run - disconnected cam sensor, connected crank sensor, sprayed fuel, turned over motor, no run. - connected both sensors, sprayed fuel, turned motor over - runs like a frickin champ. *** Cant test the Air Control Valve (code 24) because the Haynes manual does not have that part listed in the book. -Inspected Coil, All plugs are getting spark and sparking properly when the motor is turned over. -Inspected Fuel Filter. Good volume of fuel flows through filter. -Fuel Pump. I did not have the proper gauge to test fuel pressure, so I replaced the fuel pump with a brand new pump. Fuel filter sock is new to. -Tested fuel injectors, all 4 have proper ohm reading. What I've discovered is the fuel injectors are not pulsing. -I tested each electrical lead and found that there is no power getting to any of the injectors. When I switch the key on, I should have 12V. I dont know what else to look at. Any suggestions? Thanks.
