[xl76]

Hey everyone
I have a 94 B16 vit which has recently started to surge and miss around 2800 -3000 rpm on acceleration and then it will accelerate above that OK . I have checked the usual things
Air cleaner
spark plugs
compression
leads
new rotor and dizzy cap
Cleaned MAF
Cleaned throttle body
has anybody had this before out of the blue.
all help greatfull

[jimny_timmy]

Auto or manual buddy?

[xl76]

Yeh Sorry Manual

[xl76]

just checked the ECU only code was 12

[johnmath]

Diagnostic Code 12: Diagnostic Item: No fault or fault in not monitored circuit. http://www.rhinopower.org/diag/cel.html


Engines need three things: compression, fuel & spark. My guess would be a loose low tension ignition wire, or some other loose electrical wire (most likely on the engine) that is resonating or vibrating and making poor connection at the rpms where you have the surging. Good luck!

[JrZook]

Whats the fuel pressure like?

[xl76]

still no good
I have checked the wiring , cleaned every plug I can find compression 4 x 145psi I will check the fuel pressure
any Idea what is correct pressure is.

[xl76]

I think I have a answer , I was researching Outers and someone had a similar issue which sounded the same . Problem was the temp sensor
I disconnected mine and Bingo problem gone . Need a new Temp sensor

[Scrawny]

Which temp sender?

[xl76]

There is one with a two wire plug on it left side bottom with a large plug

[Rhinoman]

I would advise that you check all the vacuum lines, surging is often caused by a leak which causes the ECU to be unable to properly control idle. It would also be worth cleaning out the EGR just in case thats sticking.