New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

90 GTU RX7: Rebuilt engine, intermittent surge idle in cold/warm climate.

Old 08-15-15, 04:12 AM
  #1  
Rotary Otaku

Thread Starter
 
ncds_fc's Avatar
 
Join Date: Aug 2005
Location: SF Bay Area
Posts: 34
Likes: 0
Received 0 Likes on 0 Posts
CA 90 GTU RX7: Rebuilt engine, intermittent surge idle in cold/warm climate.

Greetings to all, finally happy to have a running RX7 again, and able to be more active on the forum.

I have a rebuilt stock N/A 13B engine, NO aftermarket mods, and have been putting miles on it to break in the rebuild. I've noticed that when i drive my FC from San Francisco (cold) to areas such as Sacramento and San Jose area, my idle doesn't surge (1200-1500 RPM).

I've consulted all the break in procedures on forums and RX7 sites via Google. I saw in Rotary Resurrection (I think), that adjusting my TPS until before a complete break-in wasn't worth it as the idle would constantly change.

It's been consistent in that when I drive to the SF South Bay, the surging idle goes away. if first noticed it when I drove to Sacramento from San Francisco. Whenever I return to SF, the surging idle comes back. I have messed with the TPS many times, and even had it set per FSM instructions so many times.

When in warmer climate, my idle goes to regular 600-900 or, at 1100. Again, in colder climate, specifically when near the Ocean, like Pacific and San Francisco, my idle surges.

Should I wait till after it's broken in at 2000 miles? I've got 1000 miles so far.

I've done everything according to the forum in looking for a leak and even replaced hoses. Except for doing a compression check. That's next on my list after an oil change.

Last edited by ncds_fc; 08-15-15 at 04:50 AM.
Old 08-15-15, 10:06 AM
  #2  
Moderator

iTrader: (1)
 
satch's Avatar
 
Join Date: Jun 2005
Location: tulsa,ok.
Posts: 11,738
Received 11 Likes on 10 Posts
Go ahead and set the TPS for it takes but a minute to do and it won't hurt the car. The Green/Red wire should read 1 volt w/key to on after the car has been completely warmed up (20 minute drive).
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Th0m4s
Build Threads
25
02-26-19 02:04 AM
sYnth.
New Member RX-7 Technical
2
08-17-15 07:28 PM
rkhanso
2nd Generation Specific (1986-1992)
1
08-13-15 11:40 AM


Thread Tools
Search this Thread
Quick Reply: 90 GTU RX7: Rebuilt engine, intermittent surge idle in cold/warm climate.



All times are GMT -5. The time now is 04:45 AM.