1991 240sx s13 KA24de question plz need help !!!

[XXlvek]

Hi guyz can someone tell me whats wrong with my 240sx ? so i bought this car about 2 month ago 1991 with 145xxx miles had couple problems but nothing major. those weekend were kind hot 75+ and car started to loose power but only when its hot, at night when its getting colder its fine and driving as usual but when hot and sunny its loosing power, high RPM but car goes slow at any gear. What can it be ? thx.

[NISSAN240SX12]

i had the same problem were my car would run like crap on warm days and would run good on cold days. it ended up being the fuel pump. I would check the temp sensor that reports to the ecu first and move on to the fuel pump. goodluck

[XXlvek]

thx a alot ! ill check that.