DFI and ECMDiscuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
Since installing the Zeitronix WB and making the required changes to the BIN for open loop running, my engine will cut out every one in a while. When I drive the car for an hour, it might do it 4 or 5 times. If I am at a stop, the engine will usually die. If I am driving, its like I turned the engine off and then back on real fast. The faster I am driving, the less I feel the effects of the cut out.
I was cruising down the highway this evening with the DIAG screen up when it happened (no data log). AFR was in the 14-15 range, I felt the engine cut out (like maybe 1/10 of a second) and looked down st the display and the AFR spiked to 20 and then went back to the 14-15 range after the engine kicked back in. I continued on down the highway.
I had to disturb the ECM and knock sensor under the dash when I installed the Zeitronix controller. I used Velcro and a zip tie to mount it to the ECM. It doesn't seem like a loose wire thing and the ECM is not throwing any codes. Could it be a setting in the BIN causing an issue or could the Zeitronix be creating some electronic interference?
__________________ Relatively original 1982 Z-28 with Crossfire, T-tops, and A/C delete.
Engine mods: 355 cid, Edelbrock Performer AL heads, Renegade cross-ram intake, COMP 249XE cam, 65# injectors, 2.0-inch throttle bodies, EBL Flash computer, complete MSD ignition system, K&N air filters, Hooker shorty headers and y-pipe, Edelbrock cat-back exhaust system, TCI Street Fighter TH-350, TCI 2200 RPM stall converter, 3.73 gears in stock posi rear end, SSBC two piston aluminum front calipers.
Re: Engine Cutout After WB Install and BIN Changes
The thread is a few months old but I see nobody responded.
My ZT-2 looks at WBo2, RPM, TPS and MAP. It is grounded properly, but every now and then it makes the TPS signal as logged from the ECM go high. I can unplug the ZT-2 and the TPS comes good.. Plug it back in and it reads high again.. Weird.. and annoying.
Re: Engine Cutout After WB Install and BIN Changes
Quote:
Originally Posted by ben73
The thread is a few months old but I see nobody responded.
My ZT-2 looks at WBo2, RPM, TPS and MAP. It is grounded properly, but every now and then it makes the TPS signal as logged from the ECM go high. I can unplug the ZT-2 and the TPS comes good.. Plug it back in and it reads high again.. Weird.. and annoying.
Are you logging TPS or MAP with the ZT-2?
About the TPS with the ZT-2, Dominic was having the same issue. In the end he just disconnected the TPS input to the ZT-2 and left it at that.
Re: Engine Cutout After WB Install and BIN Changes
Thanks RBob, good to know I'm not the only one.
My ZT-2 is at least 4 years old now, I might ask them about this issue and determine if it may have been fixed in a more recent firmware update.
Ben.
__________________ Red/Red 84 Vette. 383 Crossfire 12.26 at 114mph
