Funkysammy7

I have a Honda del sol with a b18b1 engine and it won't pass 4rpm when I try it makes popping sounds and it stays reved up at 2rpm and when I turn ac on it goes down a little I don't know the problem and it only happens sometimes and makes it hard to drive in every gear won't pass 4rpm it doesn't happen all the time though sometimes when it's driving like that something would crackle and the engine like would flick off and on and it will continue to drive normal again and vice versa please help

sdaidoji

iTrader: (1)

ECU going in safety mode - something is not working right.
check oil levels (it controls VTEC, if low, ECU goes safety mode)
any engine light? Check engine codes

(automated response due to high number of questions about same issue)

Funkysammy7

Can't scan it and don't have VTEC and just did an oil change

sdaidoji

iTrader: (1)

non-stock ECU? which company?

Seamus O

It sounds like a clogged or malfunctioning oil chantrol valve in the vtec system.

Do you have an engine light on? Does the issue go away after the oil is warm? Is your oil low?

I have tried cleaning the oil control valves, but, it didn't work. Test the resistance of the solenoid, if it's low or O.L. then replace the component.

Hlabatut

Wow so that's why mine is not going over 4rpms trying to figure out what it could be

Hlabatut

when you first start to start the car you go to take off it goes past 4 RPMs but when it warms up it stops working it won't let you get pass 4 RPMs

Hlabatut

Wow so that's why mine is not going over 4rpms trying to figure out what it could be

Ccol19

I agree.......mine, for the longest time would start surging...like you are quickly gunning the motor up and down, when I tried to pass someone...as soon as it hit 3900 or 4000 rpm it would do this...but sometimes not when I first started it up. I checked my oil....it wasn't even on the stick. I only had a quart with me at the time...I put the quart in, and when I started to drive again it immediately stopped doing that surging, and I was able to reach it out all I wanted. It sounds stupid, but check your oil. You might want to check your oil pressure by an alternate mines than just your gauge, if you have a gauge...my 2003 ex civic did not have one. My opinion was that it was not allowed vtec to shift on due to lack of oil pressure.

Colin42

That's exactly how the system is designed. No oil = no VTEC, the system uses oil pressure to work.
Check your oil more frequently

Hlabatut

I changed my vetec silinoid and oil pressure sensor and still won't go over 4000 rpms

Hlabatut

I have checked my oil it is above level so it's not that

Colin42

is the check engine light on?
if not, do you know that it works?

Hlabatut

Yes engine light is on it is reading codes of rocker arms off

Colin42

what is the actual code number? Pxxxx

Hlabatut

I don't remember now thanks for help

Hlabatut

It reading codes about rocker arms something bout bank 1 is off

Hlabatut

I went and bought a new head waiting to get it changed

Hlabatut

It may be a sensor I'm not sure but go to orellys and see if it reads codes

Hlabatut

Bring it to orellys read the code is the check engine light on?

bowdown

limp mode maybe