Mazda 323 1990

1990 MAZDA 323
Avatar
JACKAL
  • MEMBER
  • 1 POST
my car runs good and my coolent is full, i just changed the thermostat but the gauge inside the car still goes to the H. like it is overheating. what can the problem be? Please help
Jan 3, 2006 at 10:04 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Have actual coolant temperature compared with the gauge indication before selecting parts. Treat a hot indication as potentially real until checked, and stop driving if overheating occurs.

Guidance references and applicability

Source: This question and its visible discussion. The roadmap distinguishes the original owner's reports from other participants' experiences; proposed follow-up is editorial guidance, not a confirmed diagnosis. HELLA: Cooling-system checks https://www.hella.com/techworld/ae/technical/car-cooling-system/cooling-system-check/ General temperature, circulation and leak checks; use the actual vehicle procedure.

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
Avatar
2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
Is the cooling fan working?
Jan 24, 2006 at 9:45 AM
Avatar
COSMO
  • ✓Experienced Mechanic
  • 347 POSTS
Does it go to HOT when the key is turned on, or does it get HOT after running for a few minutes. I would check to see if the engine cooling fan is working. If it is then you might have some cyl. head or head gasket issues. IF it is going to HOT with just the key turned on....then I would suspect a coolant tempature sensor or wiring to that sensor

Cosmo..Mazda Tech
Jan 24, 2006 at 3:23 PM
Avatar
L. BONNICI
  • MEMBER
  • 1 POST
I own a 1990 Mazda 323, manual/petrol/1293cc/5gear transmition.

Last week I had to drive through 6" of water for about 6 miles. I had to leave engine revved up (3500) not to let engine stall.
After two days of normal running engine overspeeded to about 4500. I tried to chack accellerator pedal but to no avail. I switched off ignition but engine continued to rev erratically. Finally I had to stop engine on gear. When engine starts from cold it stops normally, as soon as it warms up a little the fault comes up again and engine overrevvs and does not stop.

What can I do? :D :D
Oct 3, 2007 at 6:44 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.

Discussion summary

Mazda 323 1990

A 1990 Mazda 323 continued to indicate hot after thermostat replacement despite a reported full coolant level. Replies asked whether the indication appeared immediately at key-on or only after running and whether the fan worked.

Reported outcome: The owner supplied no follow-up measurements or repair result.

A later account of uncontrolled engine speed after driving through water came from another person and is a separate problem.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle