Yet another "my car wont start" from a newb - Impala Tech
Troubleshooting Diagnosing problems

 
LinkBack Thread Tools
post #1 of 10 (permalink) Old 03-21-2012, 01:23 PM Thread Starter
 
 
Join Date: Mar 2012
Location: Cleveland
Posts: 4
 
Yet another "my car wont start" from a newb

I recently got my 68 out of storage after 11 years. I changed all of the fluids, plugs, wires, turned the engine by hand, tested the starter....and it will not turn over. I have not bought a new battery yet, but hooked up the one from my Honda Odyssey. The horn/wipers/taillights work, but the car does not do anything or make a sound when I turn the key. I do not know if the car will run, but with a good starter and a charged battery, shouldn't it at least do something? Where do I begin to diagnose the problem? Is the battery from my minivan not strong enough to crank it? Any help will be greatly appreciated!
dtknittel is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 03-21-2012, 03:29 PM
Moderator
 
Join Date: Jan 2006
Posts: 12,458
 
My guess is the ignition switch is defective. You can try and short out the two terminals on the starter solenoid to see if the motor turns over (it still won't run unless you hot wire the ignition because with a failed ignition switch you won't be energizing the ignition circuit).

Big Dave
Big Dave is online now  
post #3 of 10 (permalink) Old 03-21-2012, 04:40 PM
Moderator
 
Join Date: Jan 2007
Location: Lewisburg, Ohio
Posts: 2,909
 
Turn the motor over by hand. At least you'll know its not locked up.
dadstoy is offline  
 
post #4 of 10 (permalink) Old 03-22-2012, 06:50 PM Thread Starter
 
 
Join Date: Mar 2012
Location: Cleveland
Posts: 4
 
BD- thanks for the advice. I replaced the ignition switch with no difference. On a side note, before I replaced the switch I removed the cluster/plug of wires that connects to the drivers side of the firewall (the wires that include the purple one coming off of the starter). I pulled out each wire (making a diagram to ensure they get replaced correctly), cleaned them and the plug/box with some WD40 and replaced them. (Someone in another forum had mentioned doing this while I ws researching my problem). After installing the new ignition switch and turning the key there was still no change in my issue but the wires that I cleaned started smoking. I let it go for a sec thinking it may be the wd40 burning off, but I got nervous and shut the car off. The purple wire seemed pretty hot afterwards, but maybe it usually is? Have I created another problem or do you think the smoke was from the wd40? ...and what of my original problem? The starter is good, the ignition switch is new, the car has power....but nothing happens when the key is turned.

Dadstoy- I have turned the engine by hand and it turns.


Thanks!
dtknittel is offline  
post #5 of 10 (permalink) Old 03-22-2012, 08:41 PM
Moderator
 
Join Date: Jan 2006
Posts: 12,458
 
Wires melting is never good as the copper wire is annealed to make it soft and pliable. When it over heats to the point of burning the PVC insulation on the wiring it becomes hard and brittle and will break from engine vibration. Might as well plan on replacing that wire.

WD-40 is a Water Dispersing, electrically conducting, light oil that contains minerals (phosphates) to protect metal from corroding. It was formulated for the military (only took 39 trials to get the formulation correct to meet the mil specification which is why it is called WD-40; just like with 7-Up). It was designed to get water and contaminants out of electrical equipment in the field under battle conditions so our modern Army could phone home.

I have no clue what is wrong with your electrical system but you have a dead short somewhere.

Big Dave
Big Dave is online now  
post #6 of 10 (permalink) Old 03-22-2012, 11:51 PM Thread Starter
 
 
Join Date: Mar 2012
Location: Cleveland
Posts: 4
 
Thanks again. I can't seem to find a wiring diagram specifically for the Impala without buying a book. Any links out there?

Can I replace just one or two wires at a time? Where can I get single wires or can I just purchase generic wire of the same gauge and replace? Harnesses are in the $hundreds and, like I said, I don't know yet if the car will run so I am trying to hold off putting any real money into it until I hear her do something. Purr, click, spin, rev, tell me to leave her alone...anything other than silence.
dtknittel is offline  
post #7 of 10 (permalink) Old 03-23-2012, 05:47 AM
Moderator
 
Join Date: Jan 2006
Posts: 12,458
 
If you replace the wire try and find a larger gage wire with the same insulation color. In DC wiring bigger is always better. The factory was incredibly cheap in size selection, figuring the fusible link would keep them out of court in any car fires that ensued.

Big Dave
Big Dave is online now  
post #8 of 10 (permalink) Old 03-23-2012, 07:08 AM
Moderator
 
Join Date: Jan 2007
Location: Lewisburg, Ohio
Posts: 2,909
 
As Dave says , jump across the center big post on the starter to the smaller inside, toward the motor post and see if it cranks. Then do the same with the key in the ignition in the run position. It should start. Could just be a bad Solenoid.
dadstoy is offline  
post #9 of 10 (permalink) Old 03-23-2012, 10:21 AM
Senior Member
 
Join Date: Aug 2011
Location: Alberta, Canada
Posts: 224
 
I would clean all that WD off and put dielectric grease in all your electrical connections before going any further.
05snopro440 is offline  
post #10 of 10 (permalink) Old 04-10-2012, 01:18 PM
Member
 
Join Date: Jul 2011
Location: ca
Posts: 77
 
had a similar problem once. i jumped the 2 purple wires off the neutral safety switch and it fired right up. just disconnect them at the bottom of the steering column and run a jumper wire between them to see if thats the problem. you have to eliminate things in sequence. if its not that, it may be a bad solenoid. also, did you whack the starter a few times with a hammer?
shaman258 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome