wont go past 3000 rpm
#1
Full Member
![](https://www.rx7club.com/images/misc/10_year_icon.png)
Thread Starter
Join Date: Feb 2005
Location: houston
Posts: 168
Likes: 0
Received 0 Likes
on
0 Posts
wont go past 3000 rpm
I just drop new motor in had some fuel burning problems then i changed the ecu no more smoke or fuel burning problem. Now i finally take it for a test drive then my car wont go over 3000 rpm on first gear. Car runs normaly when i drive slow and steady but when i try to mash down the gas pedal, it hits 3000 rpm then it starts to jump and it doesnt want to go past 3000 rpm. does any of yall out there think it might be that ecu i put in? by the way both ecus i tried are stock and both had different problems.
#3
Originally Posted by marix1521
disconnect the battery and hold the brake down for about 1-2 minutes
reconnect the battery and take it for a drive
reconnect the battery and take it for a drive
#5
RX-7 Bad Ass
![](https://www.rx7club.com/images/misc/15_year_icon.png)
iTrader: (55)
Have you pulled the engine codes yet? The ECU will tell you if it's not happy.
Sounds like you may have a bad connection to one or both of the secondary fuel injectors - they kick in at 3000 RPM. I believe you'll get a code if they're not plugged in.
Dale
Sounds like you may have a bad connection to one or both of the secondary fuel injectors - they kick in at 3000 RPM. I believe you'll get a code if they're not plugged in.
Dale
Trending Topics
#9
Lives on the Forum
![](https://www.rx7club.com/images/misc/15_year_icon.png)
Join Date: Dec 2001
Location: San Lorenzo, California
Posts: 14,716
Likes: 0
Received 8 Likes
on
8 Posts
1. Could be MAP sensor related.
2. Could be secondary fuel injector related.
3. Could be TPS related
4. No offense, but if you don't know how to do basics like pull codes, etc, why are you dropping in your own motor?
2. Could be secondary fuel injector related.
3. Could be TPS related
4. No offense, but if you don't know how to do basics like pull codes, etc, why are you dropping in your own motor?
#12
If you pull the codes and it shows nothing wrong, make sure your intercooler pipes and vaccum lines are connected and check for leaks. I had the same problem, and it was a leak on one of the intercooler pipes. Check everything rynberg said too, all those could possibly be the problem.
#13
Lives on the Forum
![](https://www.rx7club.com/images/misc/15_year_icon.png)
Join Date: Dec 2001
Location: San Lorenzo, California
Posts: 14,716
Likes: 0
Received 8 Likes
on
8 Posts
Originally Posted by HDP
BTW, are all the FDs OBD-I or were the 95 OBD-II?
#14
Senior Member
![](https://www.rx7club.com/images/misc/15_year_icon.png)
Join Date: Jun 2002
Location: Cincinnati
Posts: 415
Likes: 0
Received 0 Likes
on
0 Posts
Your car is in limp mode. This is caused by the ECU throwing a code. Disconnecting the battery and holding brake for about 10-15 seconds will clear any codes and should get it out of limp mode. However, since there is a code - run the diagnostic to find out what it is. Even if the check engine light isn't on, there can still be a code.
-Charlie
-Charlie
#15
Junior Member
![](https://www.rx7club.com/images/misc/05_year_icon.png)
Join Date: Mar 2002
Location: Australia
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
When you say new do you mean new/rebuilt or 2nd hand and new to your car. If its been rebuilt it may not be the best thing for it for you to "mash down the gas pedal"
#16
Full Member
![](https://www.rx7club.com/images/misc/05_year_icon.png)
Originally Posted by jimmyp281
anybody had this problem before? i can use some pointers man
All you have to do is disconect the battery and press on the brakes for 3 times after that wait for 20 seconds and connect the battery back again. It should work as it happen with me.
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
alexdimen
3rd Generation Specific (1993-2002)
20
10-23-15 01:50 PM
The1Sun
1st Generation Specific (1979-1985)
0
09-07-15 10:21 PM