'90 FC wont start please help - RX7Club.com - Mazda RX7 Forum

2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

'90 FC wont start please help

Reply

 
 
 
Old 08-10-18, 04:19 PM
  #1  
Junior Member
Thread Starter
 
Join Date: May 2018
Location: Washington
Posts: 24
Thanked 0 Times in 0 Posts
'90 FC wont start please help

The car had been having some issues but what normally start until today. The car has power, the lights and accessories work. The battery and alternator were recently checked and in good condition. I cleaned up the grounds before and things were fine until yesterday. The car did the same thing but I was bald to fix it by unplugging and replugging the fuses. I noticed that the main fuse was a 60a even though it's supposed to be a 100a. When unplug and replug my fuses I get power to everything until I turn the key to start at which point everything dies. I think it must be something with the starter connections but I dont know where.
Hellhound196 is offline  
Reply With Quote
Old 08-11-18, 08:44 AM
  #2  
Senior Member
 
Hot_Dog's Avatar
 
Join Date: Nov 2001
Location: Alexandria, VA
Posts: 583
Thanked 15 Times in 15 Posts
I'm not sure how you can replace the 100A main fuse with a 60A fuse. The 100A main fuse has male connectors that are held in the fuse block with screws. The other fuses (i.e., 30A and 60A) have female connectors and just slide into the main fuse block. For starters, I would recommend installing the correct 100A main fuse.
Hot_Dog is offline  
Reply With Quote
Old 08-11-18, 12:52 PM
  #3  
Junior Member
Thread Starter
 
Join Date: May 2018
Location: Washington
Posts: 24
Thanked 0 Times in 0 Posts
Thanks I ordered the correct fuses and they should be here today so I'm gonna give it a shot. I have no idea how the old owner managed to do it but I plan to correct it and hopefully get my car working again.
Hellhound196 is offline  
Reply With Quote
Old 08-11-18, 09:01 PM
  #4  
Junior Member
Thread Starter
 
Join Date: May 2018
Location: Washington
Posts: 24
Thanked 0 Times in 0 Posts
The car still wont start after replacing the fuses. I think it may be the starter solenoid because I just hear a single click when I try to start it.
Hellhound196 is offline  
Reply With Quote
Old 08-11-18, 10:12 PM
  #5  
Full Member
 
professionalpyroman's Avatar
 
Join Date: Sep 2009
Location: Independence Mo
Posts: 187
Thanked 12 Times in 11 Posts
While you're down checking the starter, make sure it has a good clean connection to ground. Easiest to check with a multimeter for continuity. Sometimes they can get dirty and the path to ground doesn't work as well.
professionalpyroman is offline  
Reply With Quote
Old 08-12-18, 12:06 AM
  #6  
Junior Member
Thread Starter
 
Join Date: May 2018
Location: Washington
Posts: 24
Thanked 0 Times in 0 Posts
I previously cleaned up the grounds that go to it and made sure they were clean. I'm hoping that tomorrow I can change the starter and solenoid and that my issue is located there and not in the wiring somewhere but I think that since I'm hearing a single click that it's getting power but just not activating as it should.
Hellhound196 is offline  
Reply With Quote
Old 08-12-18, 08:34 AM
  #7  
Senior Member
 
Hot_Dog's Avatar
 
Join Date: Nov 2001
Location: Alexandria, VA
Posts: 583
Thanked 15 Times in 15 Posts
Clean off your battery terminal and the grounds.

Proper RX-7 Grounding Procedures
Hot_Dog is offline  
Reply With Quote
Old 08-12-18, 02:32 PM
  #8  
Junior Member
Thread Starter
 
Join Date: May 2018
Location: Washington
Posts: 24
Thanked 0 Times in 0 Posts
I cleaned up the grounds and replaced the starter and still nothing. I'm now having it towed to the closest Firestone and hopefully they'll be able to resolve the problem plus it'll get the car out of the parking lot at work so there's that
Hellhound196 is offline  
Reply With Quote
Old 08-12-18, 08:00 PM
  #9  
Senior Member
 
Hot_Dog's Avatar
 
Join Date: Nov 2001
Location: Alexandria, VA
Posts: 583
Thanked 15 Times in 15 Posts
Some additional suggestions:
1. Check the ignition switch harness.
2. Check the clutch pedal starter interlock switch.
3. Check the security system starter cutout relay.
Hot_Dog is offline  
Reply With Quote
Old 08-14-18, 02:06 PM
  #10  
DPG Burnout
iTrader: (50)
 
rotorholic's Avatar
 
Join Date: Jul 2005
Location: DALLAS TX
Posts: 2,032
Thanks: 0
Thanked 1 Time in 1 Post
Get down there and with a screwdriver tap the battery positive and the solenoid and it should crank, this will eliminate engine or electronic issues, then you can figure out the easy part why you're not getting power down there.
rotorholic is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
LuckyTII7
2nd Generation Specific (1986-1992)
8
06-13-08 01:05 PM
rbharris1984
2nd Generation Specific (1986-1992)
6
01-05-07 12:36 AM
ShiFty69
2nd Generation Specific (1986-1992)
1
03-07-05 02:56 PM
WeazelOne
2nd Generation Specific (1986-1992)
1
10-22-02 12:18 PM


Thread Tools
Search this Thread
Quick Reply: '90 FC wont start please help


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: