Car goes into safe (limp) mode on positive boost
#1
Junior Member
Thread Starter
Car goes into safe (limp) mode on positive boost
I am having trouble with car cutting out or possible going into limp mode when applying throttle under load. It seems to be related with the boost. RX7 fc turbo (manual)
I've noticed that it cuts the throttle (goes into safe mode) as soon as the boost reaches zero (I have a boost gauge installed). It will not get above zero. I can drive the car as long as I keep the boost down, so very gently on the throttle. But as soon as I apply throttle and the boost nears positive it cuts out. I suspect its something to do with this?
I've noticed that it cuts the throttle (goes into safe mode) as soon as the boost reaches zero (I have a boost gauge installed). It will not get above zero. I can drive the car as long as I keep the boost down, so very gently on the throttle. But as soon as I apply throttle and the boost nears positive it cuts out. I suspect its something to do with this?
#2
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,835
Received 2,604 Likes
on
1,847 Posts
S4? S5? S5 has error codes you need to check. S4 its more likely to be something mechanical
#3
Junior Member
Thread Starter
#4
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,835
Received 2,604 Likes
on
1,847 Posts
#5
Junior Member
Thread Starter
Sorry this might be trivial but I am not quite sure how to do that. There is a guy on youtube that has a blinking check engine light on the dash. I dont have an engine light on my warning cluster dash, so how can I check for codes?
#6
Junior Member
Thread Starter
So, I've made a light test from two wires and a spare car light (I've tested it and it is working if connected to the battery). I connect it to the single port next to the front headlight near the battery and then connect the other end to the negative battery. However I get no lights when I turn the ignition to its first position (car electronics on with engine off). Am I doing it wrong?
#7
Rotary Enthusiast
Hi,
So, I've made a light test from two wires and a spare car light (I've tested it and it is working if connected to the battery). I connect it to the single port next to the front headlight near the battery and then connect the other end to the negative battery. However I get no lights when I turn the ignition to its first position (car electronics on with engine off). Am I doing it wrong?
So, I've made a light test from two wires and a spare car light (I've tested it and it is working if connected to the battery). I connect it to the single port next to the front headlight near the battery and then connect the other end to the negative battery. However I get no lights when I turn the ignition to its first position (car electronics on with engine off). Am I doing it wrong?
Trending Topics
#8
Junior Member
Thread Starter
Here's how to check for error codes on an S5: 89-91 CPU Trouble Codes
#9
Rotary Enthusiast
You might try reaching out to your friends down under on the Aus Rotary forum (AusRotary - AusRotary index). They might be able to help you.
#10
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,835
Received 2,604 Likes
on
1,847 Posts
sorry i didn't have a lot of time to type anything out, but you need to get some kind of LED and it goes in the diagnostic plug, then you ground the TEN pin (the other 1 pin plug) and turn the key on, engine off and the LED will flash the code(s)
the b/w wire is just switched power
the b/w wire is just switched power
Thread
Thread Starter
Forum
Replies
Last Post
86gxl_fc
2nd Generation Specific (1986-1992)
9
05-31-07 08:42 AM
dubulup
3rd Generation Specific (1993-2002)
7
10-04-02 12:38 PM