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

overheating!!

Old 08-28-01 | 12:02 AM
  #1  
jacknghiem's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2001
Posts: 13
Likes: 0
From: van
overheating!!

i have a 86 n/a rx-7. well this question is pretty simple. My engine is still overheating after a coolant flush and all, the temp gauge reads to about 3/4. could it be the thermostat? fan? or the radiator. what is the most common problem for this 86'er?
Old 08-28-01 | 12:34 AM
  #2  
HAILERS's Avatar
HAILERS
 
Joined: May 2001
Posts: 20,563
Likes: 23
From: FORT WORTH, TEXAS,USA
Could be all three or any of the three. If I were you I would remove the thermostat completly. See what the results are. I have the thermostat out on two of my cars right now(gonna put 'em back in soon when I get off my dead rear). The needle never gets over the first 1/8th of the gauge, either car. If it still overheats, check the fan. Does it blow pretty good at idle and pick up as you nudge the throttle further open initially? If it does not overheat on the freeway doing 65/70 but does overheat idling, it could be the fan. The radiator? Yeah, it could be stopped up with some kinda sealant someone used to stop a leak with. I had a (still have)an 82 that ran towards hot and I bought a radiator from Mazdatrix and it ran cool after that. Then again, does your car lose coolant(disappear?). Do you refill frequently? Does you overflow tank keep filling up and overflowing? Does your buzzar go off frequently? Oh yes, last but not least the gauge should be suspect also.VERY suspect.
Old 08-29-01 | 02:07 AM
  #3  
Gab88na's Avatar
Full Member
 
Joined: Aug 2001
Posts: 87
Likes: 0
From: Blainville QC Canada
I had similar problem on my 88.Take the water pump pulley in your hand and try to move it, if it moves, changes the water pump because the bearing is bad. That was my problem. After I've change it, the gauge didn't go over half even without a fan. Check the fan-clutch to. Check if it's harder to turn the fan when the engine is hot. If it turns freely at all time, even very hot, change the fan-clutch.

hope it will help
Old 08-30-01 | 09:23 AM
  #4  
jacknghiem's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2001
Posts: 13
Likes: 0
From: van
it was actually the thermostat that was givin up on me. i had it changed in 2 hours. now its operating at norm temp but cools down faster then before. thanks for the help guys
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JoesFC
2nd Generation Specific (1986-1992)
9
10-05-15 08:10 AM
Devon Murray
Introduce yourself
2
09-25-15 09:41 AM
The1Sun
1st Generation Specific (1979-1985)
7
09-18-15 07:13 PM
The1Sun
New Member RX-7 Technical
5
09-15-15 04:45 PM
erevos
2nd Generation Specific (1986-1992)
4
09-15-15 09:19 AM


Thread Tools
Search this Thread
Quick Reply: overheating!!



All times are GMT -5. The time now is 06:52 PM.