General Rotary Tech Support Use this forum for tech questions not specific to a certain model year
Sponsored by:
Sponsored by: CARiD

FD Help

Old Sep 13, 2010 | 09:28 PM
  #1  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
FD Help

Is it normal for when I brake, that the rpms go down? also what is good idle rpm?
Reply
Old Sep 13, 2010 | 09:59 PM
  #2  
Sideo's Avatar
Rotary Enthusiast
Tenured Member: 15 Years
Liked
 
Joined: May 2006
Posts: 763
Likes: 15
From: reno nevada
I'm assuming your talking about pressing brakes when stopped? The brake booster is vacuum operated so when you press them down it pulls vacuum off the engine
Reply
Old Sep 13, 2010 | 10:27 PM
  #3  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
Ahh so in other words is like turning the ac on?
Reply
Old Sep 13, 2010 | 10:30 PM
  #4  
Sideo's Avatar
Rotary Enthusiast
Tenured Member: 15 Years
Liked
 
Joined: May 2006
Posts: 763
Likes: 15
From: reno nevada
Yea kinda. It's like having a temporary vacuum leak.
Reply
Old Sep 13, 2010 | 10:40 PM
  #5  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
Also My Idle Sensor Control Solenoid valve has a problem how do I check this, Or replace it?
Reply
Old Sep 14, 2010 | 11:18 AM
  #6  
7dust's Avatar
Irregular Here
Tenured Member: 20 Years
iTrader: (14)
 
Joined: Dec 2003
Posts: 3,075
Likes: 4
From: Alvin, TX
^^^ Its on the back of the extension manifold. It can be removed and replaced without pulling the manifold, but it is a tight fit.
Reply
Old Sep 14, 2010 | 10:35 PM
  #7  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
One more question, If my car takes acouple cranks to turn over, does this mean the spark plugs are going out or the alternater?
Reply
Old Sep 14, 2010 | 10:49 PM
  #8  
7dust's Avatar
Irregular Here
Tenured Member: 20 Years
iTrader: (14)
 
Joined: Dec 2003
Posts: 3,075
Likes: 4
From: Alvin, TX
^^^ A couple of tries or a few seconds of cranking to start?

Regardless, an alternator will not keep your car from starting. Spark plugs could keep your car from starting easily if they are fouled . However, if the car runs smooth once it starts - its probably not a plug problem either.
Reply
Old Sep 14, 2010 | 11:05 PM
  #9  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
No it runs smooth when on, just it takes a couple key turns like I can hear alittle snap, so idk if its not letting enough sparks to ignite
Reply
Old Sep 15, 2010 | 02:03 AM
  #10  
cptpain's Avatar
Torqueless Wonder
Tenured Member 15 Years
iTrader: (1)
 
Joined: Oct 2004
Posts: 2,020
Likes: 3
From: Texas
Originally Posted by KuZiCaN
No it runs smooth when on, just it takes a couple key turns like I can hear alittle snap, so idk if its not letting enough sparks to ignite
you might have the starter relay issue.

Do you hear a click, and have to turn the key to "on" a few times before the engine acutally turns over and starts?
Reply
Old Sep 15, 2010 | 08:12 AM
  #11  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
Yeah I hear a click sometimes when it doesnt start first go
Reply
Old Sep 15, 2010 | 08:20 AM
  #12  
OneRotor's Avatar
RAWR
iTrader: (3)
 
Joined: Apr 2004
Posts: 3,860
Likes: 2
From: 90024
starter.
Reply
Old Sep 15, 2010 | 08:31 AM
  #13  
7dust's Avatar
Irregular Here
Tenured Member: 20 Years
iTrader: (14)
 
Joined: Dec 2003
Posts: 3,075
Likes: 4
From: Alvin, TX
Maybe - or just the FD starter interlock system showing its age. If the starter solenoid does not receive a full 12 volts, it will only click and not engage the starter.

I fixed the click-click-click-start problem by installing an additional relay at the starter itself.
Reply
Old Sep 15, 2010 | 03:40 PM
  #14  
Hotwheelz's Avatar
Who say's i need a Van
Tenured Member 05 Years
iTrader: (18)
 
Joined: Feb 2009
Posts: 609
Likes: 1
From: Whatsittoya
Mine dips in rpms as well when i stop and my dash pot is broken..coincidence? Maybe not.

The starting problem is well documented as pettit racing has designed a simple way to cure it
http://pettitracing.com/rx7/index_ignition.htm
Reply
Old Sep 15, 2010 | 08:36 PM
  #15  
7dust's Avatar
Irregular Here
Tenured Member: 20 Years
iTrader: (14)
 
Joined: Dec 2003
Posts: 3,075
Likes: 4
From: Alvin, TX
^^^ The Pettit "Starter Booster" is a $5 relay, some wire and a few crimp connectors. Seriously. Make it yourself.

Ive never seen a dashpot break and lots of people just ditch it as part of the bare-blocking and emissions removal process even though it has nothing to do with emissions. Your car might be dipping in RPM's when you decelerate because you need to adjust the fuel cut on your PFC.
Reply
Old Sep 15, 2010 | 09:41 PM
  #16  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
Well Im going to change the spark plugs out see if that help, can anyone give me tips i want to do this the right way
Reply
Old Sep 15, 2010 | 10:24 PM
  #17  
7dust's Avatar
Irregular Here
Tenured Member: 20 Years
iTrader: (14)
 
Joined: Dec 2003
Posts: 3,075
Likes: 4
From: Alvin, TX
Are you following along here at all???

If you're getting the click-click-start problem then plugs aren't your problem.

Have fun doing what you do.
Reply
Old Sep 15, 2010 | 10:32 PM
  #18  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
Im following along, but I think the cars gone 4k miles, without spark plugs being changed its worth a shot
Reply
Old Sep 16, 2010 | 08:34 AM
  #19  
Gene!'s Avatar
Thread Starter
Cause I Can
iTrader: (3)
 
Joined: Mar 2010
Posts: 125
Likes: 0
From: Cal State Fullerton
Well I had a good idea of jump starting the car, and boom it starting without any problem, what does this mean is it still the starter or could it be my battery?
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 08:05 PM.