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> Won't start, fuel pump?
#1RAGE
post May 7 2007, 11:01 PM
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Just since this last weekend, my 914 has been having trouble starting. It turns over and over but doesn't start. Two out of three times trying, I got it to start. The last time I noticed just before it finally started, I heard a buzzing sound come on. Normally I hear this buzzing sound coming from the front of the car when it is running. Is that noise coming from the fuel pump?

I have heard that some people relocate the fuel pump to the front trunk area. If that is the case with my car, would the fuel pump likely be underneath the tank?

Just to make it clear. Normally I hear a buzzing noise coming from the front trunk / gas tank area. Recently I have been having trouble starting the car but just before it does the noise appears... which leads me to think it might be the fuel pump.

I'm not much of a mechanic. I remember looking for the fuel pump a couple years ago and couldn't find it in the engine bay; this also leads me to believe it is up front somewhere.

Thanks in advance.
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Katmanken
post May 29 2007, 08:13 PM
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Square relays are easy. Listen for clicks when activated or......

Take a couple of very small screwdrivers or knife blades and carefuly spread the cover box relative to the base to unlock the cover. Pull the cover up. Plug into the harness, and do your start sequence while looking at the little arm. If it works, the coil turns into an electromagnet, pulls the little arm closed and creates an electrical contact between the arm and another contact.

I hadda troubleshoot my daughters Volvo this weekend. THey run a later version of the Bosch design with a hot wire instead of a flap. With the cover off, both relays tripped in response to key movement to energize the pumps (plural).

Ya might want to open the relay to look inside. My L-jet relay was corroded out from water standing inside and needed replacing. The Volvo guys recommend resoldering the Bosch relays as they the guts become unsoldered over time.

Ken
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#1RAGE   Won't start   May 7 2007, 11:01 PM
porsche914blue   That probably is your fuel pump. Mine was relocat...   May 8 2007, 09:11 AM
mstein95   BTDT - I would start there. When mine FP died ...   May 8 2007, 09:16 AM
Travis Neff   FI or carbs? if FI, I would first suspect your rel...   May 8 2007, 12:36 PM
swl   I'm with Joel. Intermittent no buzz is most l...   May 8 2007, 04:46 PM
#1RAGE   Thanks guys.. I think we're on the right track...   May 8 2007, 09:46 PM
Marlow   Are you running carbs? It would seem someone has ...   May 8 2007, 10:22 PM
KELTY360   You may find your fuel pump behind the steering ra...   May 8 2007, 11:30 PM
#1RAGE   It is FI. I guess I'll have to look for my fu...   May 8 2007, 11:53 PM
Dave_Darling   You didn't mention you were running L-jetronic...   May 9 2007, 09:51 AM
#1RAGE   I appologize for not giving information my car. F...   May 10 2007, 08:48 PM
Dave_Darling   Those look to be fuel injection wires--they're...   May 10 2007, 09:22 PM
#1RAGE   Yes, I believe that is a 12 on the wire. I pushed...   May 11 2007, 07:00 PM
Dave_Darling   The click is probably the dual relay--if it is, th...   May 11 2007, 07:48 PM
#1RAGE   Alright, made some more progress today. Got a g...   May 15 2007, 11:36 PM
Dave_Darling   The L-jet system does not run the pump when the ke...   May 16 2007, 10:00 AM
Marlow   You might consider cleaning your tank out if the f...   May 16 2007, 10:10 AM
Garold Shaffer   You might consider cleaning your tank out if the ...   May 16 2007, 10:42 AM
#1RAGE   We plugged in the relay, turned the key to the on ...   May 16 2007, 08:03 PM
#1RAGE   Can anyone tell me how I would test that dual rela...   May 29 2007, 11:41 AM
Marlow   http://manuals.type4.org/ljet/ Go to the 'Com...   May 29 2007, 01:02 PM
kwales   Square relays are easy. Listen for clicks when ac...   May 29 2007, 08:13 PM
#1RAGE   Hey thanks! Took the relay apart and found e...   Jun 14 2007, 06:37 PM
#1RAGE   FINALLY! Got a new relay, put it in, put the ...   Jun 28 2007, 11:08 PM


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