laraswift10
Almera overheating speed sensor
Summary of the thread
A 2005 Nissan Almera with a diesel engine is experiencing severe overheating, and the radiator fan isn't functioning correctly. The issue may be linked to a faulty speed sensor, which can interfere with the cooling system by providing incorrect speed data, preventing the fan from activating properly. A diagnostic tool can confirm this issue, and replacing the speed sensor resolved the problem in a similar case.
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4 comment(s)
laraswift10 (community.author)
Interesting! How did you figure out it was the speed sensor? Was it obvious, or did you need a diagnostic tool?
benjamindrache5
I was stumped at first. I had to take it to a workshop. They used their diagnostic tool, and it immediately flagged the speed sensor. Apparently, it's a common issue. If the fan blade looks fine, it might be worth checking out. I paid around 200€, but budget 250€, just in case.
laraswift10 (community.author)
That's a great analogy, I appreciate it! I'll get the speed sensor checked. You were right; it was the speed sensor! I'm so glad this is over!
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NISSAN
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ALMERA
benjamindrache5
I had a similar problem with my old Opel Astra: overheating and the check engine light. It turned out to be a faulty speed sensor messing with the cooling system. The car thought it was going slower, so the fan wasn't kicking in. It could be something like that for you.