Worked on the car all day long today to get rid of that damn 4500 rpm no power.
I installed the Walbro fuel pump.... that didn't help. Still boost's, then falls on its face at 4500 rpms.
I pulled the ecu codes and got a code 34, Detonation Sensor. Here is the story behind that one..... When I was tracing the wires before the motor went in, I noticed in the FSM that on the CA side of the wiring harness there were 2 wires that went to the Knock sensor. But when I traced out the wires on the KA there was nothing on the 2 harnesses that went to the knock sensor. I followed the srswap wiring diagram and it mentioned nothing about a knock sensor, so I left it alone. I had a feeling that it needed to be hooked up, but didn't know where. I just had an extra plug on the lower transmission harness that had nothing to plug into by the fuse box. I asked Jon about it and we decided that it has to be an automatic transmission plug.
Guess what? That was the connector from the knock sensor. I pulled back the tape on the CA harness plug by the battery (big plug) and found the 2 wires for the knock sensor. One is white, the other black. Connected up the wires, checked the ecu, and the code was gone. It was showing a code 55 which is everything is A-OK.
I was pretty happy, I thought the problem had been solved! Took the car out on a test drive, got out to a open stretch of road out off the subdivision, and gave it some gas.....
1500 rpms..... ok2000 rpms..... here comes the turbo!!!2400 rpms...... almost 10 pounds!!!!3500 rpms..... pushed back into the seat.... I love boooooost!!!4500 rmps...... no boost.... no power..... no throttle reponse.. no nothing. SUM*****! Still doing it....
shifted gears into second and just tried to cruise along at about 2500 rpms with maybe a pound or two of boost.... It was laggy and drove like crap.
So..... long story short. Fixed a bunch of crap, still not running right.
ANY suggestions at all would rock.
I checked on that wastegate problem... I took it off the turbo and moved the door with the arm.... it opens and closes very easily. So I put it all back together. Started the car and just blipped the throttle from the throttle body to watch the actuator arm to see if it moved.... NO movement. Should it move when going from vacuum to boost? Even just a little bit?
Also..... exhaust side of the turbo smoked a bit today. Just the housing. Hoping it was just burning off extra wd40.
Joe
New drama
-
USDM_OneVia
- Posts: 570
- Joined: Sat Apr 05, 2003 5:17 pm
- Car: Racing
- Contact:
Yup, i had some problems hooking up my knock sensor too. Since the sohc ka's dont have a knock sensor and some S13 dohc ka dont have them either, i was going crazy because i didnt know what to do. The plug to the knock sensor was in the upper harness on my ca harness, so i felt releived and plugged that sucker in.
As for your wastegate. I dont think it will open while standing still. I think you have to put a load on the car (i.e driving around)Wheres your wastegate feedline connected too?
As for your wastegate. I dont think it will open while standing still. I think you have to put a load on the car (i.e driving around)Wheres your wastegate feedline connected too?
-
USDM_OneVia
- Posts: 570
- Joined: Sat Apr 05, 2003 5:17 pm
- Car: Racing
- Contact:
It's really easy to hook up Jon....
Trace the wire off your knock sensor into the lower transmission harness. It should be one big white shielded wire. Then at the connector it splits into 2 non-shielded wires, one white, one black. If you have any of the old CA harness left over, like it did, I just butt connected the the white to the white, then the black to the black. Then it went back into a shielded wire on the harness. It's pretty easy to hook up. Bring it down and I will do it for ya!
Joe
Trace the wire off your knock sensor into the lower transmission harness. It should be one big white shielded wire. Then at the connector it splits into 2 non-shielded wires, one white, one black. If you have any of the old CA harness left over, like it did, I just butt connected the the white to the white, then the black to the black. Then it went back into a shielded wire on the harness. It's pretty easy to hook up. Bring it down and I will do it for ya!
Joe
-
GotBoost4Yall
- Posts: 167
- Joined: Thu Feb 27, 2003 3:16 pm
- Car: Cars-DSMs/Nissans
Might wanna have someone else in the car reving it up to 4500.Where the end of the arm is where the pin goes through,(should look like a little tiny handle)when hitting 4500 you should notice that tiny handle move 90 degrees or more. If that wastegate is staying closed ,the car is going to sense its overboosting and hit fuel cut. Yeah your able to move the arm with a little force but I only did that to help the wastegate arm when it was sticking, under vacuum its different. Lucky at least its hitting fuel cut,its just saving itself from Kaboom.