Solved II "fuel cut/what feels to be a speed gov.?"

ONLY for ADVANCED technical discussion about the 240sx!
Vegascorbin
Posts: 732
Joined: Sat Nov 24, 2007 9:56 am
Car: 1990 240sx dirt track race car

Post

We have finaly solved our problem after a year and a half. Last major part that fixed it was yet another ECU.

What we did (and number of differant parts we tried):Rebuilt engine (Falure not related but did eliminate internal engine as a cause)Removed all Emissions stuff Replaced the Maf (x2)Replaced the Distributor (x3)Replaced all 4 injectors (once)Replaced #1 and 3injectors (1 addtional time)Cap and Rotor (x2)Coil (x2)Power transistor (x2)Rewired Ignition circuit (x1)Replaced internal harness (x1)Replaced Transmission (not related but we did do it)Replaced Engine Temp Sensor (x1)Replaced ECU (X4)

When we first go this car it would not rev above about 3000 and was only running on 2 cylinders. Over time we finaly got it to go to about 4000 to 4500 (our chep aftermarket tach jumps a bit.) We were stuck there for a while while we tried differant ECU's. Unknown to us, we were swapping bad for bad.

Finaly we were able to put in a good ECU and can rev to Red line everytime without fault.

My son got his first win in a heat race this past saturday. Main event did not go as well We got a flat but the car ran great.


greencar
Posts: 124
Joined: Mon Mar 19, 2007 6:57 pm
Car: 1992 240sx se

Post

very cool, do you have any pictures?

User avatar
Wc240
Posts: 899
Joined: Tue May 12, 2009 8:58 pm
Car: 89 Nissan 240SX
97 Nissan 200SX
91 Nissan 240SX ka-t
06 Scion xB
2000 Nissan Frontier
Contact:

Post

good to hear. and =1 for thanking the person/peaple that helped you out. shows that you are appreciative

falcon1209
Posts: 4
Joined: Thu Jun 11, 2009 8:17 pm

Post

Wow, talk about unlucky: swapping out a bad part for another one.

Well good to hear you got everything working.

Vegascorbin
Posts: 732
Joined: Sat Nov 24, 2007 9:56 am
Car: 1990 240sx dirt track race car

Post

Going to wait to post pictures for after our first Main Event win.

Also the car is a bit beat up right now due to hard racing and harder walls.

After our next race (6-27-09)we have about 7 weeks off as it is just too hot to race here in the desert. We are going to spend the time fixing the cosmetics etc. We will take some photos of it before we ding it up again


Return to “240SX Technical Forum”