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There is an ohm test for the CPS. Don't remember the values off hand. They were posted in a thread I had about FP issues. |
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1. Charge your battery 11.67v is a bit feeble. Measure actual battery voltage at the batt terminals- is there a voltage drop at the FP relay? Just thinking you may have poor connections between the battery and FP relay so that you get way less than 11.67v under load. Easy to eliminate as a potential source of problems. 2.If the relay did not click when you jumpered it: 1. relay is defective,or 2. connected wrong terminals 3. Remove relay and test. New relay is $10 :K.A.E. 2.408.120 ? 99661510100 For $10 at this stage why not just fit a new one? See Pelican's excellent info: http://www.pelicanparts.com/techarticles/Boxster_Tech/22-FUEL-Fuel_Pump/images_med/Pic2.jpg 4. If you know what you are doing, connect FP direct to battery with a fused jumper cable.Polarity ! |
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Anything more than 9v 'should' operate the relay but why try? Just charge the battery to eliminate that problem. If you are measuring 11.67v with no load, it may be misleading because poor connections will show massive voltage drop when you draw power.
Did you bench test & compare the new & old relay? |
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https://www.youtube.com/watch?v=3JB63ebFfgU Make sure the part number on your new relay is correct.If not, test the old relay and if good use it. K.A.E. 2.408.120 or generic alternative verify for your yr. |
Its either spark or fuel. To check for spark remove the little rubber hose that connects to the throttle body behind the throttle plate. At the hole, squirt wd40 into the throttle body at the same time you crank the motor. If the motor sputters and runs for a moment you have spark and the problem is fuel.
If you get no sputter then its a spark problem. Unless you have other ignition related codes, suspect the cps. |
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Don't throw parts at it. Diagnose it. Where are you at in the process? |
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ok i am 90 percent sure it is the fuel pump. there is power going to the pump and the pump is grounded. However, i my journey to get to the pump i was taking the black hose off the sending unit )not the fuel line hoses) and i broke the white nipple off the fuel sender. Does that mean the fuel sender is done and I need a new one? From what i gather that could have been a $280 mistake.
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The plastic nipples become brittle with age/heat.
Read this? Porsche Boxster Fuel Pump Replacement - 986 / 987 (1997-08) - Pelican Parts Technical Article Buy the fuel pump kit: Pelican Parts Or call Woody at Itsanova for a used part? |
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How the hell do you get the fuel lines from the pump off the fuel sender? I am cutting my hands up trying. Thanks |
If you are having trouble with the hose clamps(?) try a hose clamp pliers kit + a Mayhew remote pliers kit?
Something like this -but check with other Forum members: Amazon.com: Generic 9 Pc Hose Clamp Pliers Kit Ratchet Pipes Removal Tools Swivel Jaw: Automotive You also need long "hose-gripper' pliers: Sunex 3703 11-Inch Long Hose Gripper Pliers Set, 3-Piece - Needle Nose Pliers - Amazon.com For your hands you need "high dexterity" mechanics gloves.Kevlar is not necessary but: High Dexterity Work Gloves - Flex Gloves for Demanding Work Conditions If you have big hands, jobs like this are impossible. You need very small ,strong hands with long ,strong fingers and a surgeons dexterity-and inexhaustible patience. I have these deformities/quirks and my fellow mechanics sometimes beg me to do such work.They no longer tease me for being skinny! Some of these parts you can not see so try looking at this parts diagram: Fuel Tank Memorize it and grope around ,with your eyes closed. Once you are familiar with the layout of parts ,it is easier to select the best instrument to work with.But you have to be comfortable,calm and have a Zen approach. Yup it is a tough job. I hope this helps and wish you luck |
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http://986forum.com/forums/uploads01...1447155116.jpg |
Those connect to the fuel pump, don't they? They likely unclip from the FP.
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Ok got fuel lines off.
Here is the part I broke. Wondering if I can glue it and if so what glue would be permanent? http://986forum.com/forums/uploads01...1447282209.jpg |
A hack would be to use a coarse threaded brass nipple +epoxy.But if it failed after a few miles....
A good used pump may be wiser? |
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