Memphetic
15+ Year Contributor
- 115
- 3
- Nov 6, 2005
-
Punxsutawney,
Pennsylvania
The Original Symptom:
Car ran like crap. Has no power, can barely rev. Freshly built engine with good compression, literally zero miles on the build. Hooked up my logger, had 43 counts of knock while driving.
What I've tried thus far:
I replaced the fuel pump first - it seemed to me that the car was running lean, thus not having any power and causing knock. This did not alleviate the issue.
I've disconnected the knock sensor completely. This, of course, reduced knock to 9 counts under any throttle% (as it knows there is no knock sensor). I then removed the knock sensor from the block, reconnected it, and set it up on the windshield wiper cowl wrapped in cloth. It still produced 9 counts under any TPS%. I then removed the ECU and replaced it with a known good one. Still 9 counts under any TPS% other than idle.
Ideas? Seriously racking my brain and am very tempted to just burn a chip that completely removes the knock sensor code. Just curious if anyone has had a similar issue in the past - all of the threads I've read was due to something torqued wrong or similar... but I use a torque wrench for every bolt on engines I assemble, including the knock sensor.
Car ran like crap. Has no power, can barely rev. Freshly built engine with good compression, literally zero miles on the build. Hooked up my logger, had 43 counts of knock while driving.
What I've tried thus far:
I replaced the fuel pump first - it seemed to me that the car was running lean, thus not having any power and causing knock. This did not alleviate the issue.
I've disconnected the knock sensor completely. This, of course, reduced knock to 9 counts under any throttle% (as it knows there is no knock sensor). I then removed the knock sensor from the block, reconnected it, and set it up on the windshield wiper cowl wrapped in cloth. It still produced 9 counts under any TPS%. I then removed the ECU and replaced it with a known good one. Still 9 counts under any TPS% other than idle.
Ideas? Seriously racking my brain and am very tempted to just burn a chip that completely removes the knock sensor code. Just curious if anyone has had a similar issue in the past - all of the threads I've read was due to something torqued wrong or similar... but I use a torque wrench for every bolt on engines I assemble, including the knock sensor.
