In-tank fuel pump
#1
In-tank fuel pump
I have a '91 240 that the gas gauge was broken. When I went to check the sending unit, I found that the wires at the gas tank were no longer connected due to rust, etc. at the tank. The car still ran fine. I replaced the tank with one from my '89 240DL and things are fine.
Is there an in-tank fuel pump on these? I always thought there was but since my '91 ran fine (no symptoms at all) without any wires connected to the tank, I began to question whether it has an in-tank pump (there are only 2 wires) or whether it does much.
Is there an in-tank fuel pump on these? I always thought there was but since my '91 ran fine (no symptoms at all) without any wires connected to the tank, I began to question whether it has an in-tank pump (there are only 2 wires) or whether it does much.
#2
RE: In-tank fuel pump
I AM NOT SURE IF THIS WILL HELP OR NOT BUT I HAVE AN 86 240DL. WHEN I REMOVED THE ACCESS PANEL ON MINE THERE ARE TWO SETS OF WIRES BUT THE ONE THAT GOES DIRECTLY TO THE TANK HAS THREE WIRES ONE GROUND AND I GUESS ONE FOR THE GAUGE AND ONE FOR THE PUMP. AT THE SAME TIME I HAVE RAN TESTS ON MINE THAT BYPASSED THIS PUMP. AND IT STILL STARTED AND RAN FINE I BELIVE IT IS MORE OF A HELPER PUMP TO RELEIVE SOME STRAIN ON THE MAIN PUMP.
#4
#5
#7
RE: In-tank fuel pump
Actually, my wife and daughter complain that the '91 doesn't seem to have the pickup that our old '89 wagon used to have. However, I think this is off the line and at lower speeds. It seems to do better at higher speeds (40-50mph).
I have had the '91 up to 70-75 and haven't noticed anything abnormal about the way it runs. When you say a loss of power, do you mean it will stumble when accelerating at high speeds or generally run bad?
Thanks for the help
I have had the '91 up to 70-75 and haven't noticed anything abnormal about the way it runs. When you say a loss of power, do you mean it will stumble when accelerating at high speeds or generally run bad?
Thanks for the help
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