Hi, I drive a 1990 Nissan 300ZX Non-Turbo. There is 96,000 miles on the engine. Ok so heres the thing, when i give the car gas it has very bad low end torque. Much worse than it should. It wont spin the wheels even though its rear wheel drive and has 220 horespower. Thats not right an engine with that much power should be able to do this. So ok this is what happens,
- From first gear car is floored (just as a test)
- RPM slowly rises until it gets to about 2,200RPM
- The engine feels like it is doing a lot of work to move the car and wont go past 2,200RPM for a second or two
- After the engine passes the point where it accelerates real slow and gets to about 2,600 rpm, it only then really starts to pull.
So, I dont know what this low end power loss im having. When the engine is at about 3,000 rpm and im going like 20 mph and the throttle is opend to 100% it pulls harder than if i was stopped and throttle was applied 100% in first gear. It almost feels like when the engine goes to 2,000 RPM it gets powered down if the transmission shifted into second or third gear, it feels like its working very hard. So I think this is the mass air flor meter is not working properly. I have checked for airleaks and cant really find anything. What do you guys think? Thanks in advance!