Rev limit at 5k??????
06-06-2006, 08:51 AM
#1
Registered User
Thread Starter
Join Date: Apr 2006
Location: Long Island, NY
Posts: 56
Rev limit at 5k??????
I searched for a bit and couldn't find this exact problem..
My car is auto -> Manual swap. With s13 exhause cams on a 95 s14 rebuilt engine.
This has only happend to me twice since I have owned the car for 2 months. It hits 5k and bounces off it like a rev limit. It seems to be only when it is really damp/wet outside. This happend to me on saturday, then on sunday it was fine.. It actually reved a lil past 7k rpms.
So, I don't understand why this happens randomly.
It has Cold Air Intake/Header/Exhaust and new o2 sensor. So, Any ideas?
My car is auto -> Manual swap. With s13 exhause cams on a 95 s14 rebuilt engine.
This has only happend to me twice since I have owned the car for 2 months. It hits 5k and bounces off it like a rev limit. It seems to be only when it is really damp/wet outside. This happend to me on saturday, then on sunday it was fine.. It actually reved a lil past 7k rpms.
So, I don't understand why this happens randomly.
It has Cold Air Intake/Header/Exhaust and new o2 sensor. So, Any ideas?
06-07-2006, 10:05 PM
#6
Originally posted by LA_phantom_240
...valve srprings giving out and floating?
...valve srprings giving out and floating?
In his case at a 5000RPM rev limit he should run an ecu diagnostic before concluding to anything in my opinion. May just be something really simple.
06-08-2006, 07:12 AM
#8
Registered User
Join Date: Feb 2005
Location: Binghamton, NY
Posts: 232
I had similiar experience in my car, 1991 240, it would bounce off 5000 rpm like a rev limiter.
It was prominent in 5th gear, but I also noticed that if i rev the motor in any gear while I was moving, it would also rev to only 5k.
I recently replaced my ECU #24 to another ECU #24 with the limiters removed, and have had no problems.
My thought is this might be usual for the car, and not a problem at all.
Just my 2c
It was prominent in 5th gear, but I also noticed that if i rev the motor in any gear while I was moving, it would also rev to only 5k.
I recently replaced my ECU #24 to another ECU #24 with the limiters removed, and have had no problems.
My thought is this might be usual for the car, and not a problem at all.
Just my 2c
06-08-2006, 05:06 PM
#10
Contributing Member
Join Date: Apr 2005
Location: Slidell, LA
Posts: 2,550
Each ECU has a number in big bold print, to determine which ECU it is... now from what i know, the only difference in the ecus for s13 91-94 240sx's is their processing power... supposedly the higher the number, the faster it processes info... of course, i cant remember where i heard this, nor do i know how accurate this information is
