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> '75 1.8 914 No Start? Please help., No Spark
Maximum1302
post Mar 23 2009, 04:23 PM
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(IMG:style_emoticons/default/driving.gif) Hello all. Just recently purchased my dream car, a Nine-Fourteen. Its a 1975 1.8 with fuel injection. I have encountered a no-start problem. I was driving it and it was running fine and now it will not start. There is no spark! I know its getting fuel and that everything is mechanically sound, but there is no power to the coil. The coil itself is fine I just replaced it and Im sure it works alright. Where do I look now? I checked my fuses and they are all good. (IMG:style_emoticons/default/WTF.gif) Please help! I love my car! Thanks
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904svo
post Mar 23 2009, 04:31 PM
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make sure there is power on both sides of fuse#9 with the key on if there
is no power your switch may be bad. If there is, this goes to the relay board
pin #8 comes out to pin #7 to the coil.
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Maximum1302
post Mar 23 2009, 04:40 PM
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lol sorry Im no electrical master, but what you said about that fuse made me wonder because I followed one of the wires from that fuse over to the stereo, and it wouldnt start after one of my friends was fiddling with the stereo. So which switch could be bad? The ignition switch? Im confused as to how it happened because I dont see how messing with the stereo could make the car not have spark but then again it ran before he messed with it and when he was done... kaputt
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So.Cal.914
post Mar 23 2009, 04:55 PM
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Where was power taken from for the radio? If taken off any power source, it could have been for the ignition and blew the fuse at the panel. Get a Continuity Tester, you'll be glad you did.

Edit:

Where's my manners... (IMG:style_emoticons/default/welcome.png)
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Maximum1302
post Mar 23 2009, 04:59 PM
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Well, the radio looks stock to me. I know it is wired through the ignition because you cannot turn on the stereo without the key on. Also all the fuses are good on the fuse panel under the dash. Are there any other fuses I sgould check? Thanks.
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904svo
post Mar 23 2009, 05:31 PM
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QUOTE(Maximum1302 @ Mar 23 2009, 02:59 PM) *

Well, the radio looks stock to me. I know it is wired through the ignition because you cannot turn on the stereo without the key on. Also all the fuses are good on the fuse panel under the dash. Are there any other fuses I sgould check? Thanks.


The fuses may look good but they could have dirty contacts and are not making conection. Check with a volt meter for voltage on both sides. That fuse is the switch power fuse.
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jc914
post Mar 23 2009, 06:03 PM
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(IMG:style_emoticons/default/welcome.png) you are on the right path to fixing the problem
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ejm
post Mar 23 2009, 07:14 PM
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QUOTE
There is no spark! ....... but there is no power to the coil.

Did you check for power at terminal 15 on the coil or are you assuming there is no power because there is no spark?

QUOTE
and it wouldnt start after one of my friends was fiddling with the stereo

QUOTE
I know it is wired through the ignition because you cannot turn on the stereo without the key on


Does the car have points ? or a pertronix which may have fried with the key on, engine not running
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Maximum1302
post Mar 23 2009, 07:28 PM
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Well I have not checked terminal 15 for power, but the coil is good so should I still do it anyway? And the car has a regular distributor with points. And I checked for spark where the coil plugs into the dizzy, so Im pretty sure the coil isnt getting power.
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zonedoubt
post Mar 23 2009, 07:51 PM
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There is good L-jet troubleshooting info here: http://manuals.type4.org/ljet/

I went through this top to bottom when diagnosing various starting problems after re-installing the fuel injection system on my 1.8.
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Maximum1302
post Mar 23 2009, 08:38 PM
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Would a clicking wiper relay have anything to do with it? The thing that is weird is I had JUST driven the car. Walked away for a while, and my buddy fiddled with the stereo and that was it. When I came back, no spark.
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Maximum1302
post Mar 24 2009, 09:29 AM
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I checked out that website for L-Jet troubleshooting, but I could not find anything that had to do with my problem. Sorry guys guess Im just an idiot
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6freak
post Mar 24 2009, 01:33 PM
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QUOTE(Maximum1302 @ Mar 23 2009, 06:38 PM) *

Would a clicking wiper relay have anything to do with it? The thing that is weird is I had JUST driven the car. Walked away for a while, and my buddy fiddled with the stereo and that was it. When I came back, no spark.


LET YOUR BUDDY FIX IT (IMG:style_emoticons/default/slap.gif) THEN BEAT HIS ASS...LOL

(IMG:style_emoticons/default/welcome.png) GOOD LUCK
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McMark
post Mar 24 2009, 01:45 PM
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Turn the key on and check for power at the coil (term. 15), yes, even new coils need power to work. (IMG:style_emoticons/default/laugh.gif) (IMG:style_emoticons/default/cool.gif) (IMG:style_emoticons/default/wink.gif)

Then pull out your Haynes manual and look at the wiring diagram to find the connection on the relay board that goes to the coil. Check for power there with the key on. (Hint: it's pin 7)

Then check for power at the connection between the relay board and the fuse panel with the key on. (Hint: it's pin 8)

Then check for power on the appropriate fuse with the key on. (Hint: it's fuse 9)

Report back here with your results and I'll tell you exactly where your problem is. If you don't have a Haynes manual or a multimeter, you need both items NOW and in the future. So get them.
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MartyYeoman
post Mar 24 2009, 01:48 PM
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QUOTE(Maximum1302 @ Mar 23 2009, 06:28 PM) *

I checked for spark where the coil plugs into the dizzy, so Im pretty sure the coil isn't getting power.


WOW, That sounds like a very dangerous place to test.

Check that your points aren't welded together.
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Maximum1302
post Mar 24 2009, 09:59 PM
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McMark, thanks for the tip, unfortunately I will not have time to check til the morning. I have a Multimeter, however I do need to go get the hanes manual!

Marty, Okay I lied, I didnt test for spark like that, I made my friend Arthur do it... well actually he did it without me asking lol. I learned my lesson doing that test on my Super Beetle ... oops (IMG:style_emoticons/default/blink.gif)
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Maximum1302
post Mar 25 2009, 10:45 AM
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Attached ImageHey, when you guys say the "relay board" and to test pin 7 and 8... is this the right place to be testing?
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CliffBraun
post Mar 25 2009, 02:30 PM
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QUOTE(Maximum1302 @ Mar 25 2009, 09:45 AM) *

Attached ImageHey, when you guys say the "relay board" and to test pin 7 and 8... is this the right place to be testing?


That would be the relay board. There are copies of the factory manual floating around, it can be a bit daunting, but is amazingly useful to have. PM me if you're interested.
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Cupomeat
post Mar 25 2009, 02:50 PM
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Just a little something I thought I'd add.

The stock radio does not run on Ignition power, so it should play without the key being on.

That being said, I think the fuse path is a good one and the Haynes manual is worth its weight in multimeters there. However, a good check of all the fuses in the fuse block is a fine way to start this troubleshooting exercise.

I know I found the current flow diagrams on line for the 1.8 before, but will post the link when I re-find them.


Good luck and I love my 75 914 l-jet. It is surprisingly reliable.
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Maximum1302
post Mar 25 2009, 03:38 PM
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Hey guys I got some new news. I fiddled with the plug on the relay board and now the multimeter shows that there is power to the coil, when I gound it to the engine. Hovever when I ground the multimeter on the negative terminal of the coil, there is no reading on the multimeter. This indicates a bad ground right? There are 3 wires plugged into that side, one is the condensor for the points... but there are two others... a white one and a black one... what now?

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