S14 Sr20det won't rev past 1,500rpm..?? turn off for 10secs all good again?

[s14zen]

I have a s14 with s14 sr20det when driving or just running for more than 3 to 7mins than it wont rev past 1500rpm. if i turn it off for 10 sec it revs perfect again. all help much apprecated. thanks.

Update:

so got an update. I drove the car half the day today. no problems at all. only issue i had was on the way home, the rpm started dropping until it went into the can't rev past 1,500rpm mode. this caused my car to shut off. i couldn't start it up again since my spark plugs were all black and black smoke came out of my exhaust. it was not running rich the whole time till something caused it to act up.

Im thinking this could be a defective MAF air flow sensor? any take on this?

[s14zen]

no one encountered a problem like this???!!!?!?:bowdown:

[s14zen]

this must be a rare problem im assuming..

[JDMRIDDAZ]

uh maybe the wiring is not to good like maf sensor

[clay9110]

its gotta be wiring check ur grounds

[2slow4oz.]

more info on the car would help!

[s14zen]

okay, so now the car runs good while driving and boosting.. only when at a stop for a long time or idle it will change moods to the 1,500rpm cough and can't rev past it. doesn't do it all the time.. depends on it's mood.

Thanks for all the imput from the previous comments!

[repda916]

Fuel pump? you have stock or 255?

[Djinfinit]

coolant sensor check it.

[s14zen]

Thanks for imput..

Could Crank Angle Sensor be possibly broken?

[s14zen]

so got update. read first post. I was able to drive about 45 to 1 hour today with no problems. boost strong and hard.

[s14zen]

bad maf? can't really ask no one here.. no shops, no one has SR20's.. no one has 240's period.. it's all Honda's on the Big Island of Hawaii. shitty deals!