Car Won't Start - Help - Fuel Pump Relay? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 08-20-2005, 03:04 AM
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1993 325is
90k miles

I'd appreciate it if anyone can help me with this. My car has not been running for about a week and it's already gotten broken into.

My car didn't have any problems before, but about a week ago the car didn't start on first try. It turned over but didn't start. The 2nd try it started. I drove about 2 blocks and the car died and would not start since. Car turns over, but seems like it's not getting fuel? I was thinking it was the fuel pump relay.

I couldn't find a "fuel pump relay" and I heard the DME relay is a common failure. Not really knowing what parts to order I got:

1. Fuel Injection relay; 12V-10/30W; W/ Diode; 6 prong connector - PN 61 36 384 364

2. Fuel Injection relay/DME relay for Motronic; White w/ 5 prong connector - PN 61 36 1 729 004

The first fuel injection relay I could not find where in my car it would be compatible. I looked at all the fuse relays in the box in the engine compartment and none fit.

The 2nd fuel injection relay/dme relay I found where to replace, but it made no difference. No start.

Any advice?
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#2 (permalink) Old 08-20-2005, 06:22 AM
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You have OBD I, read the fault codes. That should tell you something or lead you in the right direction.

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#3 (permalink) Old 08-20-2005, 10:56 AM
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Sorry for the dumb question, but when and how do you read the default codes? I've never seen them.
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#4 (permalink) Old 08-20-2005, 12:56 PM
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#5 (permalink) Old 08-21-2005, 09:14 AM
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Garage
http://www.pelicanparts.com/bmw/techarticl...6-Fuel-Pump.htm

DIY section folks...its all there!
good luck...

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#6 (permalink) Old 08-21-2005, 12:31 PM
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Quote:
Originally posted by Dudesky_E36@Aug 20 2005, 12:56 PM
http://www.pelicanparts.com/bmw/techarticl...ode_Reading.htm
[snapback]371136[/snapback]

I tried to check the default codes, but it didn't work.

I turned the ignition to the on position, stepped on the gas pedal 5 times within 5 seconds, but I didn't get any light flashes. They are supposed to flash at the console where it has the gas mileage, temp, and other info right?

What am I doing wrong?
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#7 (permalink) Old 08-21-2005, 12:33 PM
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Quote:
Originally posted by Delmarco@Aug 21 2005, 09:14 AM
http://www.pelicanparts.com/bmw/techarticl...6-Fuel-Pump.htm

DIY section folks...its all there!
good luck...
[snapback]371316[/snapback]

Delmarco, that's instructions for installing a fuel pump. I don't think that is my problem although, that is where I intended to go if the fuel pump relay didn't work.

My problem right now is seeing if I got the correct parts for the fuel pump relay and dme relay. I ordered the above parts and only one fit, the other wouldn't fit anywhere.

ANYONE HAVE A DIAGRAM OF THE RELAYS?
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#8 (permalink) Old 08-21-2005, 09:07 PM
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I could really use some help here.

Hasn't anyone in this forum replaced the fuel pump relay and know what parts to get?

Does someone know how to get a relay diagram?

Does anyone know how to use obd1?
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#9 (permalink) Old 08-21-2005, 09:25 PM
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Quote:
Originally posted by e36is@Aug 21 2005, 12:31 PM



I tried to check the default codes, but it didn't work.

I turned the ignition to the on position, stepped on the gas pedal 5 times within 5 seconds, but I didn't get any light flashes. They are supposed to flash at the console where it has the gas mileage, temp, and other info right?

What am I doing wrong?
[snapback]371330[/snapback]
You're looking at the wrong thing. You're referring to the OBC in the center console, it's the Check Engine light by the speedometer that flashes.

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#10 (permalink) Old 08-21-2005, 09:49 PM
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Quote:
Originally posted by Dudesky_E36+Aug 21 2005, 09:25 PM--><div class='quotetop'>QUOTE(Dudesky_E36 @ Aug 21 2005, 09:25 PM)</div><div class='quotemain'><!--QuoteBegin-e36is@Aug 21 2005, 12:31 PM



I tried to check the default codes, but it didn't work.

I turned the ignition to the on position, stepped on the gas pedal 5 times within 5 seconds, but I didn't get any light flashes. They are supposed to flash at the console where it has the gas mileage, temp, and other info right?

What am I doing wrong?
[snapback]371330[/snapback]
You're looking at the wrong thing. You're referring to the OBC in the center console, it's the Check Engine light by the speedometer that flashes.
[snapback]371429[/snapback]
[/b][/quote]


Thanks. It doesn't give me any codes. It just has a flash, off, then short flash - which is supposed to be no codes right?

What's the tall black relay? It's about twice the height as all the others.
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#11 (permalink) Old 08-22-2005, 04:43 PM
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I'm really surprised noone knows the answer to my questions.
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#12 (permalink) Old 08-22-2005, 05:59 PM
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the fuel pump relay is located next to ur fuse box. its covered by a black cover. there are 3 relays located under this cover. its either the first one or the second one from the left, either an orange or a white color relay. But, try this first. get a friend to hit as hard as they can on the rear passanger seat where the fuelpump is located. just have him punch the seat, While you try to start your car. then try changing the relay. then if that doesnt work, change the fuel pump it is a 30min change. goodluck! -vince

<img src='http://pic15.picturetrail.com/VOL615/2358567/4641837/67358906.jpg' border='0' alt='user posted image' />
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#13 (permalink) Old 08-22-2005, 07:57 PM
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Vince, thanks for the reply. I actually stopped by the dealer earlier today and they were kind enough to give me a relay diagram. And you're right, I missed the 3 fuses under the panel.

So a question for you:
On the diagram, the middle fuse is the "ENGINE CONTROL MODULE RELAY." Is this the same as the "Fuel Injection relay/DME relay for Motronic; White w/ 5 prong connector - PN 61 36 1 729 004?" Seems to match up without problems.

And the relay to the left of it (farthest from the driver) is the "FUEL PUMP RELAY (K6301)." Is this the same as the "Fuel Injection relay; 12V-10/30W; W/ Diode; 6 prong connector - PN 61 36 384 364?" The prongs match up but the new part has an extra prong.

I was going to buy a fuel pump today just to see if it worked, but the dealership is out of stock until Wednesday. So I'll do it then.

I'd like to know about the fuses, since the FUEL PUMP RELAY had some minor corosion. I tried swapping them out like above, but car still wouldn't start.

Well, I'll post what I find so if anyone else has this problem they won't have to go through all the hassle I went through. And I imagine this is a pretty common problem. I'd appreciate it if anyone who knows if the parts are correct would post. Thanks.
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#14 (permalink) Old 08-22-2005, 09:34 PM
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fuel pump relay and fuel injection relay are different things so I dont think it would work. get the correct relay and try again. if it still doesnt it is the fuel pump. im pretty sure its the fuel pump in the first place and not the relay. but again try getting the correct relay first. -vince

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#15 (permalink) Old 08-24-2005, 08:45 PM
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Quote:
Originally posted by vincentwashere@Aug 22 2005, 08:34 PM
fuel pump relay and fuel injection relay are different things so I dont think it would work. get the correct relay and try again. if it still doesnt it is the fuel pump. im pretty sure its the fuel pump in the first place and not the relay. but again try getting the correct relay first. -vince
[snapback]371705[/snapback]
The fuel pump relay is the one with 4 wires going to the realy plug, one of which is red/white stripe. The main relay has 5 wires going to the relay plug, 2 of them are large about 10 gauge in size, the other relay is the oxygen sensor and it has 4 wires with 2 red/white striped wires. These wire colors are for a 94 325iS. Find the fuel pump relay plug, pull the relay out, look at the bottom of the relay and find #s 87 and 30 terminals, match them to the plug holes and make a jumper wire with a male spade terminal on each end .Take the jumper and jump between 30 and 87 terminals. The fuel pump will come on if it's ok. You can here it run if you stick your head in the window and listen, or get someone to set in the rear and they will hear it if it comes on. You can drive it like this to get home. Used to carry a jumper all time in the GTI days.Had a problem a while back with my 94 325IS, basically a no start,starter was turning it fine. Jumped the relay, came home, replaced the relay, had another no start, replaced the fuel pump, car has 140K so I figured it was time. Had a another no start a week later and finally being hard headed as I am checked the voltage at the main relay and had 11.6 volts,went to battery jump connector on the right fender and had 11.6 volts. Checked the battery and it also had 11.6 volts. The started sounded fine with no other problems but the battery was bad. It should have had at least 12.4-12.6 if it was good.Replaced the battery and it's been fat and happy for 90 days.I don't know what voltage the ecu goes to sleep but there is a low voltage limit that it will just quit.I figure with the starter engaged it would cross that limit sometimes.I would check your battery voltage first and if it's low ,charge it and try and start the car. If it starts, check the alternator output. Good luck
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