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Old 05-30-2009, 07:02 PM   #1
Ceeker
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location of e30 fuel pump?

Did the pre 88 production bmw 325 have an external fuel pump?
Some diagrams show one located above the fuel filter. To my knowledge I thought the unit was located in the tank?

Could someone clarify this for me? thank you.
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I think I've had 14 bmw's in 4 years.
2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
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Old 05-30-2009, 07:16 PM   #2
e30_kid89
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Early models have a internal and external fuel pump, while late models only have one AFAIK.
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Old 05-30-2009, 08:21 PM   #3
Ceeker
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ok, that was my suspicion but wanted to make sure. Thx.
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I think I've had 14 bmw's in 4 years.
2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
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Old 05-31-2009, 04:01 AM   #4
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Old 06-09-2009, 06:31 PM   #5
325man
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so the late model pump is internal i take it?
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Old 06-09-2009, 06:43 PM   #6
Ceeker
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yup. only one pump.
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I think I've had 14 bmw's in 4 years.
2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
Ceeker is online now   Reply With Quote
Old 06-10-2009, 07:20 PM   #7
325man
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could i use that to eliminate the second pump in my early model? or will it even match up to my early fuel tank
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Old 06-10-2009, 09:08 PM   #8
e30bim
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Take off the rear seat bench by grabbing and pulling up and on the rear passenger side there is a black cover you can remove. If you remove it you can gain access to the fuel pump. If you read the Bentley manual there is an easy test you can do with a multimeter to see if it is still good or not.
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Old 06-10-2009, 10:15 PM   #9
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Old 06-11-2009, 09:43 AM   #10
arsevader
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Quote:
Originally Posted by e30_kid89 View Post
Early models have a internal and external fuel pump, while late models only have one AFAIK.
Yup.

The external one is actually the main pump and the internal one is the secondary transfer pump.

The car will still run with a dead internal one (for those that have 2 pumps obviously) but will put more strain on the main external pump.
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Old 06-11-2009, 10:30 AM   #11
Ceeker
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exactly!! the one in the tank is just a suction pump to draw the fuel into the main external pump. As suggested it may strain the main one and eventually it will croak. :-)
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I think I've had 14 bmw's in 4 years.
2 IX's -sold and parts
2 325i 4 dr - sold
4 318is all white - sold and parts
1 87 325is red - parts
1 89 325i vert grey - parts
1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.

latest addition as of 2013-Gold 87-325is auto! it's a keeper!
Ceeker is online now   Reply With Quote
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