engine power is reduced and dont start rpm not working good t.y…
Curious, what is your native language and where do you live?
I presume you mean the Terrain’s symptoms are (1) the engine power is reduced for no apparent reason; (2) the engine doesn’t start reliably; and (3) the rpm display seems abnormal.
Suggest to add some more info
- Are any dashboard warning lights on. If so, are they on all the time or intermittent?
- Under what conditions doesn’t it start, typically? Cold start, first start in the AM? Or warm start, like after you stop by 7-11 for a big gulp?
- Detail how the rpm display isn’t matching your expectations. Is it doing something it shouldn’t, or is it not doing something it should?
You’ll probably get better help here if you ask a native English speaker to edit your posts before posting, for clarity.