No power to injectors again!, Got spark, gas, at a total loss |
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No power to injectors again!, Got spark, gas, at a total loss |
surfdogskier |
Oct 7 2019, 06:22 PM
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#1
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Member Group: Members Posts: 164 Joined: 20-May 16 From: East TN Member No.: 20,019 Region Association: None |
Oh my gosh!!!! She is back to doing this same thing all over again. I finally got her running . She ran fine one evening, parked her. Next day she would not start. No power to the injectors. I got spark. I got gas in the lines. Fuel pump works like it should. I took the distributor out and cleaned the trigger points to see if that would help. All wires are connected. MPS connected. All vacuum lines connected. I bought a noid light set up and they are definitely not getting power.
What else could it be? Something on the relay board? Bad relay? This car is driving me insane. I am about to go duel carbs and drop this piece of **** fuel injection if I can't get this thing running. |
JeffBowlsby |
Oct 13 2019, 12:10 AM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,485 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Surfdog, please don't take this personally, just trying to turn this into a learning experience for all, going forward. These are old cars. If these parts are work out, then they may need replacement - standard maintenance for any car.
The easy thing and for some, the hardest thing about D-Jet is that there are only a limited number of components, and each of them can be tested individually for function with either an ohmmeter, fuel pressure gauge, a few simple tools, or a service can test these for you. If each of these tests good, then the system is plug N play. If not...maybe its another problem and not the FI? ECU - rarely go bad...but maybe. Not expensive to replace. FI harness - simple continuity test, new are available. IGN harness and tri-spade ground, - simple continuity test, and new are available. MPS - easy to test with the right equipment, rebuilt available, not expensive. Trigger points - easy to test, lasts a long time and can be adjusted if worn. TPS, with gaskets - inexpensive new boards are available. 270ohm resistor (1973 2.0L only) 4 fuel injectors - Maintenance cleaning is not expensive, aftermarket injectors available 1 cold start valve injector and thermo switch (optional) TS1 (air temp) (optional) TS2 (head temp), available Fuel pump, spendy for the OEM, functional alternative pump not expensive. Fuel pressure regulator - do these ever go bad? The air supply related parts - rarely a problem unless the plenum or gaskets are leaky, and those are repairable/replaceable. |
surfdogskier |
Oct 13 2019, 08:32 AM
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#3
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Member Group: Members Posts: 164 Joined: 20-May 16 From: East TN Member No.: 20,019 Region Association: None |
Surfdog, please don't take this personally, just trying to turn this into a learning experience for all, going forward. These are old cars. If these parts are work out, then they may need replacement - standard maintenance for any car. The easy thing and for some, the hardest thing about D-Jet is that there are only a limited number of components, and each of them can be tested individually for function with either an ohmmeter, fuel pressure gauge, a few simple tools, or a service can test these for you. If each of these tests good, then the system is plug N play. If not...maybe its another problem and not the FI? ECU - rarely go bad...but maybe. Not expensive to replace. FI harness - simple continuity test, new are available. IGN harness and tri-spade ground, - simple continuity test, and new are available. MPS - easy to test with the right equipment, rebuilt available, not expensive. Trigger points - easy to test, lasts a long time and can be adjusted if worn. TPS, with gaskets - inexpensive new boards are available. 270ohm resistor (1973 2.0L only) 4 fuel injectors - Maintenance cleaning is not expensive, aftermarket injectors available 1 cold start valve injector and thermo switch (optional) TS1 (air temp) (optional) TS2 (head temp), available Fuel pump, spendy for the OEM, functional alternative pump not expensive. Fuel pressure regulator - do these ever go bad? The air supply related parts - rarely a problem unless the plenum or gaskets are leaky, and those are repairable/replaceable. Hey Jeff. Thanks for all the help you have given. Definitely not taken personally. I wish I could leave it but to many unknowns still. I just didn't want to keep dropping $$$ into something which I lost trust in. Just way to many components to keep up with when I can just convert it over to something much easier and in my opinion, more reliable. I just want a car that will start when I need it and take me from point A to point B and back. Don't need performance or gas mileage where my top speed will rarely exceed 55mph. |
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