starting problem
#1
starting problem
i have a 190e, 2.6
i hit a deer and did a little grill and headlight damage.
my problem is that it started cutting off, and now it will not run at all
unless i hook power strait to the fuel pumps, then it will keep running.
i am not getting power through the wires to the fuel pumps.
can this be the fuel pump relay or something else.
i get continuity in the wires that run to the fuel pumps,
but what is wierd i get continuity to either wire that i connect to
ground through the multimeter
please help. i love this car
i hit a deer and did a little grill and headlight damage.
my problem is that it started cutting off, and now it will not run at all
unless i hook power strait to the fuel pumps, then it will keep running.
i am not getting power through the wires to the fuel pumps.
can this be the fuel pump relay or something else.
i get continuity in the wires that run to the fuel pumps,
but what is wierd i get continuity to either wire that i connect to
ground through the multimeter
please help. i love this car
#2
RE: starting problem
Does you pump have two wires? +ve and -ve?
If so, unless you isolate the wiring at the pump to harness connection whilst measuring the body harness for continuity, you will get continuity on both wires.
One lead goes straight to ground. The other to ground thru the motor winding. If you set you multimeter to an appropriate Ohms/Resistance setting you SHOULD see a difference in the resistance of these two circuits.
Rather than checking continuity do you have 12v at the pump with the ignition on? It is likely that power is only supplied whilst cranking (this is an injected vehicle and for safety reasons constant power is inhibited)
Once the engfine is running (or at least oil pressure is up) pump supply changes to constant thu the fuel pump relay (the coil of which is maintained by earthing thru the oil pressure switch circuit)
If the engine stops (as in an accident) the oil pressure drops and the pump is isolated. At least until the next start cycle.
Why do you think your accident is in any way linked with a fuel pump supply problem?
Hope this helps anyway.
Stuart
If so, unless you isolate the wiring at the pump to harness connection whilst measuring the body harness for continuity, you will get continuity on both wires.
One lead goes straight to ground. The other to ground thru the motor winding. If you set you multimeter to an appropriate Ohms/Resistance setting you SHOULD see a difference in the resistance of these two circuits.
Rather than checking continuity do you have 12v at the pump with the ignition on? It is likely that power is only supplied whilst cranking (this is an injected vehicle and for safety reasons constant power is inhibited)
Once the engfine is running (or at least oil pressure is up) pump supply changes to constant thu the fuel pump relay (the coil of which is maintained by earthing thru the oil pressure switch circuit)
If the engine stops (as in an accident) the oil pressure drops and the pump is isolated. At least until the next start cycle.
Why do you think your accident is in any way linked with a fuel pump supply problem?
Hope this helps anyway.
Stuart
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