2nd Generation Specific 1986-1992 Discussion

!!HELP!! 88 NA S4 Loses all power while driving!

Old 01-24-2012, 01:13 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Aug 2011
Location: Middleburg, FL
Posts: 8
Default !!HELP!! 88 NA S4 Loses all power while driving!

Hey everyone i hope someone can help me out. I have a 88 RX7 NA and here is whats going on.

Ill be driving down the road and i will lose all power expect headlights and tail lights flashers. If i wait a few mins power comes back. Ive checked all the fuses and they are all good. check the battery connections also. When i got this car it has just has the MAIN Relay replaced and a new ignition switch. If someone can point me in the right direction it would help alot. I think it might be a ground for the main relay or something with the theft deterrent system but not sure. Thanks in advance!
88S4 is offline  
Old 01-24-2012, 05:01 PM
  #2  
Member
 
Join Date: Jan 2012
Posts: 31
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

Sounds like a short to me. Hard to really tell you where a short is, but some things to check would be areas you worked on last.
Phoenix is offline  
Old 01-24-2012, 07:49 PM
  #3  
Senior Member
 
Join Date: Mar 2002
Location: KAOH
Posts: 597
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

Check all grounds. Don't just look at them. Grab them and tug/pull because they may appear to be solid, but as soon as you touch they might break off or crumble away to nothing. Assuming they are solid clean up the ends. One might even try to add more grounds to the block and frame. I believe doing so also fixes the 3800 rpm hesitation on some cars as well. Pull back some of the insulation and make sure the wire is a healthy copper color and not green or gray colored and then seal it back up with electrical tape. Preferably the rubber type if possible, but it is sometimes hard to find. If you are handy with a voltmeter check continuity and voltage as soon as you lose power. Your alternator may be going off line and draining the battery to almost nothing, then charging again once it cools. 12.6 volts on a healthy battery when not running and fully charged, and around/over 14 volts when charging. Hope it helps!
sleeperRX7 is offline  
Old 01-24-2012, 08:51 PM
  #4  
Junior Member
Thread Starter
 
Join Date: Aug 2011
Location: Middleburg, FL
Posts: 8
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

Originally Posted by sleeperRX7 View Post
Check all grounds. Don't just look at them. Grab them and tug/pull because they may appear to be solid, but as soon as you touch they might break off or crumble away to nothing. Assuming they are solid clean up the ends. One might even try to add more grounds to the block and frame. I believe doing so also fixes the 3800 rpm hesitation on some cars as well. Pull back some of the insulation and make sure the wire is a healthy copper color and not green or gray colored and then seal it back up with electrical tape. Preferably the rubber type if possible, but it is sometimes hard to find. If you are handy with a voltmeter check continuity and voltage as soon as you lose power. Your alternator may be going off line and draining the battery to almost nothing, then charging again once it cools. 12.6 volts on a healthy battery when not running and fully charged, and around/over 14 volts when charging. Hope it helps!
Ive done about all that. Just been trying to find all the grounds. I am an electrician for aircraft but i cant seem to find the right diagrams for my 88 NA FC. I have tested the alternator when the car was running and the battery those all test good. I think it is the ground for the main relay but i cant find it. Anyone know where it is at?
88S4 is offline  
Old 01-25-2012, 12:58 AM
  #5  
Senior Member
 
Join Date: Dec 2008
Location: Folsom, CA
Posts: 737
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

if the FSM's are still working they have the links here on the forum for diagrams as far as the lack of power try checking the air filter change the fuel filter check the cat and change your 02 sensor are all a bunch of basic things to do besides checking the grounds
RicerJ is offline  
Old 01-25-2012, 07:40 AM
  #6  
Junior Member
Thread Starter
 
Join Date: Aug 2011
Location: Middleburg, FL
Posts: 8
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

Originally Posted by RicerJ View Post
if the FSM's are still working they have the links here on the forum for diagrams as far as the lack of power try checking the air filter change the fuel filter check the cat and change your 02 sensor are all a bunch of basic things to do besides checking the grounds
Im not talking about lack of performance power, im talking about electrical power.
88S4 is offline  
Old 01-25-2012, 04:52 PM
  #7  
Senior Member
 
Join Date: Mar 2002
Location: KAOH
Posts: 597
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

Can't remember if there are fusible links somewhere in the circuit, but if you know someone with access to All Data Pro or Mitchell One those would show for sure. Wish I still had access to them. Autozone has Alldata, but I don't know how in depth they can go. Just throwing this out there but the alt belt has the correct tension? Mine would move on me from time to time.
sleeperRX7 is offline  
Old 01-25-2012, 07:15 PM
  #8  
Junior Member
Thread Starter
 
Join Date: Aug 2011
Location: Middleburg, FL
Posts: 8
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

Originally Posted by sleeperRX7 View Post
Can't remember if there are fusible links somewhere in the circuit, but if you know someone with access to All Data Pro or Mitchell One those would show for sure. Wish I still had access to them. Autozone has Alldata, but I don't know how in depth they can go. Just throwing this out there but the alt belt has the correct tension? Mine would move on me from time to time.
Yes it does, Im going to go threw the can and redo all the ground this weekend as per the grounding thread on here and hopes it helps. I know for sure there is no ground on the Alternator bracket and none on the trans.
88S4 is offline  
Old 01-25-2012, 11:41 PM
  #9  
Senior Member
 
Join Date: Dec 2008
Location: Folsom, CA
Posts: 737
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

my answer was kinda pointed at both electrical and performance but fsm's will help you trace the wires out
RicerJ is offline  
Old 01-30-2012, 06:16 PM
  #10  
Senior Member
 
Join Date: Mar 2002
Location: KAOH
Posts: 597
Default Re: !!HELP!! 88 NA S4 Loses all power while driving!

any luck fixing her yet?
sleeperRX7 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
chris_stewart19
3rd Generation Specific
16
01-16-2012 09:55 PM
tobiasfox87
2nd Generation Specific
3
07-17-2011 07:24 PM
treceb
3rd Generation Specific
6
09-14-2006 10:03 AM
RotaryRevolution
3rd Generation Specific
23
07-05-2006 08:51 AM
red_blast
Insert BS here
11
02-14-2005 09:11 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: !!HELP!! 88 NA S4 Loses all power while driving!


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.