I had my Sr20det in my car for about 6 months. Recently, i got a problem with it. When i step on gas in second gear, the car seems like don't want to run....like there is something pull it from the back. The rpm rise slowly and the speed rise slowly. But the boost reading is rising. If i release the gas a little bit, it will accelarate slowly. Anyone knows what happen in my car?

 

you pobably need a new clutch...

 

MAFS maybe, my 180sx acted really strange when mine went bad.

driftmonster

http://www.geocities.com/wardog5811/SR20det.html

 

Yeah, but the MAF would be happening in every gear. When the MAF is bad or disconnected, your engine will run like crap or not run past about 2800-3000 RPM's...so it wouldn't just be happening in 2nd gear.

 

yes, your right... sorry didn't give that one enough thought.

Driftmonster

http://www.geocities.com/wardog5811/SR20det.html

 

LoL...I had a quick answer because one of my SR's has a MAF that's actin all weird right now...

 

i forgot to tell u guys that i replace with a new clutch when i did engine swap. and i can idle pass 3000rpm. It happened sometimes....not always....especially in cold and rainy day.

 

why would you idle the car at 3000rpms???

 

if it can pass 3000rpm, i guess the MAF would be fine...rite?

 

if it can rev to 4k no problems, the MAF is not the issue. But we need to know more of what is going on with your car before we can actually diagnose something.

 

what u need to know in order to figure out what happen? I changed my drive belt....new clutch.....can rev pass 4k.......
do u think it may be the fuel system?

 

could be, but I don't know why you would only have a problem in 2nd gear.

 

sorry for make u misunderstand.....besides 1st gear....2nd 3rd and 4th will do also....

 

so what exactly is your car doing? When you try and accalerate it doesnt... and when you take your foot off the gas it continues to accalerate?? I think the situation needs some clarification bro

 

i mean...when i fully step on the gas, the car doesn't accel, but if i release 90% of the gas, it will accel slowly. it does not always happen but sometimes....