 trying to get car driving.... and the electrical, gremlins come out. help me before i kill |
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| Aaron Cox |
  Jan 16 2006, 07:26 PM
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#1
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Professional Lawn Dart  Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California  |
Preface: Before car was taken apart, it ran great. no electrical issues at all..... perfect.
what changed: *rear defroster window and harness installed along with switch and relay (on relay board in engine compartment) *New foglights added. New + wire from battery to new relay, and wiring to lights. lights not installed yet. *Both stock fogs and hella rally lights had the demick fog light mod done, where they can run independantly of headlights. * 904 tri combo gauge installed.... new Pressure wire ran from engine bay. Whats not working. Oil Pressure idiot light (but the gauge works (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif)) key does not engage starter. turn key, relays click, no dice. i can manually arc it with a screwdriver just fine. this tells me the solenoid is fine. i ran a set of jumpercables directly from NEG batt terminal to starter stud on trans, and it didnt change it. This reluctantly conludes that something on the switched + side of things is mesed up....... Fogs/Headlights. headlights come up. but do not light. no blown fuse. fog switch is energized, but lights dont work....... help me before i kill myself....or my car. im dangerous in a pissed off state of mind (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| SirAndy |
Jan 16 2006, 07:45 PM
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#2
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Resident German Group: Admin Posts: 41,679 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
what year is your car? if post '71, check the 2 white connectores on the back, bottom of your steering column. it's *very* easy to put them back in one prong off! (ask me how i know) ... that should solve most of your problems ... (IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif) Andy |
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| Aaron Cox |
Jan 16 2006, 07:47 PM
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#3
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
73/74.... steering column never left. i checked those connectors. relays click, but starter never engages.... |
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| blabla914 |
Jan 16 2006, 07:49 PM
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#4
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I like primer Group: Members Posts: 321 Joined: 1-March 04 From: Connecticut Member No.: 1,740 Region Association: None 
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1. oil pressure light
the light comes on when the wire to the oil pressure switch is grounded. It should be green with a red tracer. Try hooking it up to a known ground and turning the key to ign. on. If it lights you have a ground problem or a pressure switch problem back at the motor. If it doesn't light your problem is either in the wire or the gauge. Don't neglect the connections of the big plugs on the relay board here. Sometimes the pins collapse and you get a crappy connection. A single edge razor blade will help spread the pins. Don't get carried away or you'll never get the plug off once you get it on. You did put a bulb in right? I've done stupider. 2. Starter. What relay is clicking? I'll bet it is the fuel pump relay. Sorry I forget which one that is on the relay board. Use a VOM or a test light to see if you have 12V on the solenoid wire when you turn the key. Don't forget to make sure you are in N or disconnect the solenoid wire to do this. I've seen plenty of smart people fussing with the starter when the car is in gear. Bad idea. Again if you have 12V at the starter, then it's a starter thing. If not, it's a wire/relay board/ steering column thing. 3. as for the lights, if neither light is coming on the wiring on the switch sounds suspect. Best advice I've ever gotten on electrical is from my dad. Check the easy stuff like fuses and bulbs, then use a VOM or a test light. Start at the end of the system that's easiest to get to and work your way to the other end. It can be crappy work, especially when you have to take stuff apart you just put together. Good luck Kelly |
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| SirAndy |
Jan 16 2006, 07:51 PM
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#5
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Resident German Group: Admin Posts: 41,679 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
check them again ... they will fit just fine one pin off (!) and your car will do all sorts of weird things ... (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) Andy |
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| Aaron Cox |
Jan 16 2006, 07:54 PM
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#6
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
Oil pressure light... its a NEW dual sender on a short braided hose. the sender has a ground strap to the case. the GAUGE function works (new wire) but the idjit light does not. wire didnt change for that... guessing its a guage problem. cool, works when grounds... ill test that. thanks. Fogs.... Switch lights up, but none of the lights come on. The way the fog light mod works is you pggy back the fogs off the dedicated headlight power.... enabling them to be on with ignition, unrelated to headlight operation.... keep em comin..... AA |
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| Chris Pincetich |
Jan 16 2006, 07:56 PM
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#7
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B-) Group: Members Posts: 2,082 Joined: 3-October 05 From: Point Reyes Station, CA Member No.: 4,907 Region Association: Northern California |
I've had these issues in the last 2 weeks - and solved them thanks to the 914club advice on several new and older threads.
My starter leads were great - lots of current, but no go. Got the mim-starter from eBay and installed it this weekend = fired right up! (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif) All I can say is that 31 year old starter (on my '72 914) must have gone bad. I plan to take it to FLAPS for a free test. The headlight issue for me was temporarily fixed by switching to bright lights - they worked with low beams didn't and kept me on the road. The new headlight relay has an extra post that need to be piggy-back wired to another one for proper function - see recent thread on relays. Good luck! (IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif) |
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| SGB |
Jan 16 2006, 08:20 PM
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#8
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
-y'know a discharged, partially discharged, or otherwise screwed-up battery causes STRANGE THINGS....
-The problems probably aren't related. -y'know a discharged, partially discharged, or otherwise screwed-up battery causes STRANGE THINGS.... -Something went wrong with the fog light power source revision. Re-trace that very carefully. Un-hook that mod (it is mighty simple) and try starting again. The new power lead isn't shorting somewhere is it? Also, -y'know a discharged, partially discharged, or otherwise screwed-up battery causes STRANGE THINGS.... (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif) |
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| Flat VW |
Jan 16 2006, 08:37 PM
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#9
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Illegal Soapbox Derby Racecar Group: Members Posts: 1,692 Joined: 13-November 04 From: Phoenix, AZ Member No.: 3,105 |
I think I would begin by disconnecting the "new things" you have added, and then check your results.
I find with things electricial, I try to work from a "normal condition" and then bring in new circuits, one by one while checking results. I find that, in the end, it is much faster and less stressful than adding multiple circuits and then having to "troubleshoot" for sometimes "inter-related" faults. "Psuedo-scientific method" and "logic and reasoning" will take one a long way in solving electrical troubles.... John (IMG:http://www.914world.com/bbs2/html/emoticons/wavey.gif) |
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| Aaron Cox |
Feb 3 2006, 11:53 PM
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#10
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
update -
had a few hours to work on the car today. tricklecharged the optima over the past 2 weeks..... it was basically charged. (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) headlights work. (didnt change a thing.. ) fog light switches light up, but no power is making it to the front of the car to the lights. must be the wiring mod i did. (Fog Light wiring mod) tried grounding the warning light sender wire. no dice. light doesnt work. AA |
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| Hammy |
Feb 3 2006, 11:56 PM
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
yeah..... I tried that fog light wiring mod myself too.... I fuched everything up (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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| Aaron Cox |
Feb 4 2006, 12:15 AM
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#12
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
this picture i made should help. i believe my wiring hell is me being off by a pin. realllllly hard to see the pins when doing it. now here is a reference (IMG:http://www.914world.com/bbs2/uploads/post-2-1139033593.jpg) |
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| SirAndy |
Feb 4 2006, 12:28 AM
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#13
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Resident German Group: Admin Posts: 41,679 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
did 'ya check the back of the steering column? (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) Andy |
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| Aaron Cox |
Feb 4 2006, 12:30 AM
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#14
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
i did. they never came off originally. i pulled them. and put them back on the same way. (correctly) no change. |
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| Tom |
Feb 4 2006, 01:21 PM
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#15
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
Aaron,
Your starter problem is probably a weak starter relay ( on top of the starter ) or the contacts in the relay. It may close, but not with enough force to allow current to flow from the battery terminal to the starter motor terminal. That's why you can jumper these two terminals with a screwdriver and the starter motor turns! Now to the reason why. Probable has something to do with the current path from the ignition switch. The heavy ( read larger current path ) yellow wire from the ignition switch runs through the relay board in the engine compartment. So does the oil pressure light current path. You indicated you added some relay to this relay board. I would look at the relay board and all connections. I recently took mine out and cleaned it up and found several connections that were bad. Fixed and ready to go back on soon. Hope this has been a help. Tom |
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| Aaron Cox |
Feb 4 2006, 01:22 PM
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#16
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
illbe sure to try that tomorrow. thanks tom
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| jim_hoyland |
Feb 4 2006, 01:27 PM
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#17
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Get that VIN ? Group: Members Posts: 9,319 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California
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Have you figured out the 904 temp gauge gremlin yet ?
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| Aaron Cox |
Feb 4 2006, 01:38 PM
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#18
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
nope. pegs just like yours.... |
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| bd1308 |
Feb 4 2006, 02:19 PM
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#19
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
did you try to switch the leads from the dual sender? or something
hell i dunno, i'm just a kid. b |
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| Aaron Cox |
Feb 4 2006, 02:20 PM
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#20
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
theyre marked. G = gauge WK = warning light. gauge works.... |
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