92 Hatch KA24DE Loss of Acceleration?

[Biggins240sx]

I know about all the other stories of power loss and acceleration, but I haven't found one with a video showing theirs.

Here's the story:

1992 Hatch with S14 engine, 240/232 cams, no egr, hollowed out cat, no secondary butterfly, emissions deleted, only FPR, Iacv, and brake booster. The car has been down for almost a year due to an accident, and little money. Finally got the car back on the road. The car ran like a dream for about a week. I had installed new plugs cap and rotor when i put this motor in. The car started running like crap about 2 weeks ago.

I pulled codes on it and they were 13 and 34. I checked my ECT sensor and it was fine, but decided to replace it since the code wouldn't go away. The code consisted so i replaced the connector with a spare from another engine harness. Code 13 complete. Code 34 Knock sensor. I have checked the knock sensor according to FSM it showed fine. Even checked the wiring according to FSM, and it was fine. Since I'm unemployed, money is tight. I do side work at an independent shop around town here. But my car can barely make it half way there before i lose power. See the thing is here, when my car starts up in the morning, cold engine, it runs like a dream. It consist of no problems. But as the car warms up it starts losing acceleration. The idle drops when i push the clutch in. Just to make it move i have to give it alot of gas causing the rpms to run high. I know I'm running rich, because the plugs are black now. And I'm going to replace those as soon as I can. I'm wasting gas this way. I went through 4 gallons of gas in 40 miles. Thats crappy. So for me normal operating temperature, warm engine, equals bad.

I need some other brains on this. I'm good at diagnostics. But without enough relevant codes. Its nit-picking here. I know the knock sensor will retard timing, but will it cause this. And I'm not a bad technician. I have fixed many other vehicles and make a decent living doing this. But when it comes to my own car its like its alien.

In the video I'm driving down some back streets to make it home. I was coming home from the shop and had to stop twice to let the car cool before i could go again so i would have power. I show myself revving up a few times to show the car goes nowhere.

http://www.youtube.com/watch?v=tsjssjsT ... e=youtu.be

[youtube]http://www.youtube.com/watch?v=tsjssjsT ... e=youtu.be[/youtube]

[biggie]

ECT sensor? Which one is that?

Seems the ECU water temp sensor is bad, not sure if that's the one you replace. It would be the 2 wire sensor on the front of the engine, right besided the gauge sensor (1 wire).

[Biggins240sx]

ECT = Engine coolant temp sensor. Which was Code 13. Its good. Been replaced. Wires checked according to FSM

[biggie]

Just making sure, are you using the S13 ECU? If not wonder if IAT sensor may be an issue.

Checked Fuel Pressure? Maybe the FPR has gone bad, during cold running its fine, but then is dumping too much fuel after warm.

Also check the MAF and intake tubing, make sure there is no leaks. My Vert was similar, but less dramatic, when my MAF coupler let the MAF/Filter fall out of the intake tube.

[Biggins240sx]

I had been having that problem with the intake tube. but sealed it all off. using clamps and electrical tape to be sure leaks were not present. but i may try changing the intake. See if that helps. but can't do that until i got the money or borrow one. My buddy is trying to get his 240 back, so if he does i'll borrow his to check it. I need to check my FPR, I suspected it before but wasn't sure. I'll have to test it. And yes using an S13 ECU.

[Biggins240sx]

Figured out the lack of acceleration. Clutch kept slipping as the car got warmed up. Readjusted the clutch engagement as it was too high(never actually thought about it, cause I was so used to driving it). Bled the hydraulic fluid, and now it takes off like a bat out of hell. Still having an issue with the bogging and running rich. Have to figure that out still.