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

Limp mode every 15 minutes?

Thread Tools
 
Search this Thread
 
Old 02-28-07, 02:40 AM
  #1  
I fix planes...

Thread Starter
 
Mutaku's Avatar
 
Join Date: Jan 2004
Location: Murica
Posts: 559
Likes: 0
Received 0 Likes on 0 Posts
Limp mode every 15 minutes?

So I have this issue with going into limp mode after around 15-20 minutes of driving. Now turning the car off then back on fixes it for another 15-20 minutes. Now I have searched and come up with it being linked with the MOP. At the moment I am purchasing another MOP but my only question is, could it possibly be something else that would give these sames symtoms? I am going to see if I can pull some codes on this tomorrow to see if I can figure something out.
Old 02-28-07, 02:42 AM
  #2  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
can also be the TPS but my bet is on the OMP.

+1 for pulling codes.
Old 02-28-07, 02:50 AM
  #3  
Winter sucks

 
micah's Avatar
 
Join Date: Jan 2004
Location: Newberg, Oregon
Posts: 3,083
Likes: 0
Received 0 Likes on 0 Posts
Even with the possibility of it being your OMP, I would address the issue BEFORE driving it again. Otherwise you'll be shopping for a new engine soon.
Old 02-28-07, 02:53 AM
  #4  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
Originally Posted by micaheli
Even with the possibility of it being your OMP, I would address the issue BEFORE driving it again. Otherwise you'll be shopping for a new engine soon.

yeah, definitely premix the fuel for the time being if you really need to drive it until the issue is resolved.

i don't have much time right now to be re-rebuilding it, lol.
Old 02-28-07, 03:22 AM
  #5  
I fix planes...

Thread Starter
 
Mutaku's Avatar
 
Join Date: Jan 2004
Location: Murica
Posts: 559
Likes: 0
Received 0 Likes on 0 Posts
speaking of which how would I premix with my full tank o.o
Old 02-28-07, 03:32 AM
  #6  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
just add about 8 ounces of 2 stroke to the fuel tank and top off the tank and drive it a few miles to help mix it all thoroughly.
Old 02-28-07, 08:26 AM
  #7  
Alcohol Fueled!

iTrader: (2)
 
J-Rat's Avatar
 
Join Date: Jan 2002
Location: Hood River oregon
Posts: 11,093
Likes: 0
Received 2 Likes on 2 Posts
Correct me if I am wrong, but isnt the OMP the only thing that physically causes the CEL light to illuminate on an S5?
Old 02-28-07, 08:52 AM
  #8  
Rotartist

iTrader: (13)
 
RRTEC's Avatar
 
Join Date: Sep 2003
Location: Spring Hill TN 37174
Posts: 7,252
Likes: 0
Received 2 Likes on 2 Posts
I would shop for a new ecu too... I have an omp it is $70 shipped.. But Usually when the omp goes it takes the ECU with it...
Old 02-28-07, 09:08 AM
  #9  
Rotary Enthusiast

iTrader: (1)
 
mort2002's Avatar
 
Join Date: Jul 2003
Location: Prosser Washington
Posts: 1,248
Likes: 0
Received 0 Likes on 0 Posts
wow didnt know that one^.

J-Rat: actually the CEL on a S5 will also come on for O2 sensor...
been there done that..
Old 02-28-07, 09:09 AM
  #10  
1.5 Goodfella's Tall

iTrader: (97)
 
Gringo Grande's Avatar
 
Join Date: Oct 2006
Location: Tampa, FL
Posts: 4,216
Likes: 0
Received 2 Likes on 2 Posts
I would shop for a new ecu too... I have an omp it is $70 shipped.. But Usually when the omp goes it takes the ECU with it...
+1 Something I just learned!

Bought an OMP from RRTEC btw and it works flawlessly, good seller.

GG
Old 02-28-07, 12:12 PM
  #11  
7th Heaven

iTrader: (9)
 
slpin's Avatar
 
Join Date: Nov 2004
Location: California
Posts: 3,654
Likes: 0
Received 1 Like on 1 Post
its your mop.
get a new one. but chcek why it is causing that.
make sure the oil injectors are working fine too. like the vac lines are right, etc.
Old 02-28-07, 01:30 PM
  #12  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
i know i had the vacuum lines correct but hopefully mazda's plus didn't get em screwy when they put it back together.
Old 02-28-07, 07:59 PM
  #13  
I R SAD PANDA W/O BAW

 
ilike2eatricers's Avatar
 
Join Date: Nov 2002
Location: bay area
Posts: 6,061
Likes: 0
Received 1 Like on 1 Post
definately OMP. i have one for $50 if you need it
Old 02-28-07, 10:44 PM
  #14  
I have a rotary addiction

iTrader: (18)
 
NCross's Avatar
 
Join Date: Jun 2006
Location: Columbia, Tennessee
Posts: 4,815
Received 23 Likes on 22 Posts
mops are for kitchens, omps are for engines
Old 03-01-07, 12:36 AM
  #15  
I fix planes...

Thread Starter
 
Mutaku's Avatar
 
Join Date: Jan 2004
Location: Murica
Posts: 559
Likes: 0
Received 0 Likes on 0 Posts
did get the mop omp thing started T-T lol

How would I check if the ECU needs to be replaced as well? At this moment I premix woo!!
Old 03-02-07, 08:45 AM
  #16  
I fix planes...

Thread Starter
 
Mutaku's Avatar
 
Join Date: Jan 2004
Location: Murica
Posts: 559
Likes: 0
Received 0 Likes on 0 Posts
not meaning to double post but anyway pulled two codes


14 and 27. So confirms that my MOP/OMP needs to be replaced. The 14 suggests possibly an ECU replacement may be needed however I am going to wait and see if replacing the MOP/OMP does the trick.
Old 03-02-07, 11:25 AM
  #17  
7th Heaven

iTrader: (9)
 
slpin's Avatar
 
Join Date: Nov 2004
Location: California
Posts: 3,654
Likes: 0
Received 1 Like on 1 Post
Originally Posted by NCross
mops are for kitchens, omps are for engines

actually

omp are for people who doesnt know anything about rx7 and keep using the wrong terms like ncross

mop are for the knowledgable people that can call metering oil pump correctly, the way mazda calls it.
Old 03-02-07, 11:26 AM
  #18  
7th Heaven

iTrader: (9)
 
slpin's Avatar
 
Join Date: Nov 2004
Location: California
Posts: 3,654
Likes: 0
Received 1 Like on 1 Post
Originally Posted by Mutaku - Rotary Powa!
not meaning to double post but anyway pulled two codes


14 and 27. So confirms that my MOP/OMP needs to be replaced. The 14 suggests possibly an ECU replacement may be needed however I am going to wait and see if replacing the MOP/OMP does the trick.


if the ECU is bad, and you hook up a good mop to it, guess what happens to the good mop?
Old 03-02-07, 12:17 PM
  #19  
pp

 
tIIsleeper's Avatar
 
Join Date: Aug 2005
Location: Central Massachusetts
Posts: 768
Likes: 0
Received 0 Likes on 0 Posts
Friend had same problem....It was the wiring for the OMP
Old 03-02-07, 02:48 PM
  #20  
I R SAD PANDA W/O BAW

 
ilike2eatricers's Avatar
 
Join Date: Nov 2002
Location: bay area
Posts: 6,061
Likes: 0
Received 1 Like on 1 Post
Originally Posted by slpin
if the ECU is bad, and you hook up a good mop to it, guess what happens to the good mop?
werd. at least check the board to see if there is any burn spots or smell.
Old 03-02-07, 08:12 PM
  #21  
I fix planes...

Thread Starter
 
Mutaku's Avatar
 
Join Date: Jan 2004
Location: Murica
Posts: 559
Likes: 0
Received 0 Likes on 0 Posts
I get a 14 and 27 constantly and even if the ECU is fine I am pretty sure the 14 is a different issue that needs to be address anyway so I will be getting a new ECU but can anyone elaborate more on what 14 deals with? all i know is Atmospheric Pressure Sensor (Inside of ECU).
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
zyph3r
Canadian Forum
10
09-16-18 07:14 PM
Aramir
New Member RX-7 Technical
24
10-18-15 02:39 AM
Einheri
Single Turbo RX-7's
14
10-07-15 12:23 PM
GKW
1st Generation Specific (1979-1985)
5
09-28-15 04:34 PM
Clacor
Single Turbo RX-7's
19
09-11-15 08:36 PM



Quick Reply: Limp mode every 15 minutes?



All times are GMT -5. The time now is 02:59 PM.