Long story short, I found a good deal on a supra that supposably ran; went to pick it up, didn't start up, got a better deal plus some goodies.
I brought it home and figured I could diagnose the problem. I've gone through pretty much everything I can think of to figure it out, but still nothing. I'm paying to keep my car where it's at, so I need to figure this out decently fast.
Some background: 87, 5 speed, turbo, no p/s, no a/c, electric fans, open downpipe, fuel cell. Somebody must've been building a cheap racecar.
Now, it's getting fuel. It has compression. It has spark. But it just cranks all day. It'll "backfire," as in popping in the exhaust sometimes when cranking. The P/O said he had it running with starting fluid about a month ago, hasn't worked for me. I checked codes, only thing that came up was code 14.
Code 14 is a tricky one. I read everything jetjock has posted about what it's about, and I guess I don't full know how to narrow it down. It's either the coil pack, igniter, ecu, or wiring somewhere in between. I'm guessing the wiring, as there's some amateur wiring throughout the car. The plug wires have resistance, the plugs are good, the coil pack is grounded, I think the coil pack ohmed out in spec, the wiring harness off the coil pack is good, I don't have a 3V battery source to test the igniter, but it seems a little corroded. I took it apart and did the redundant grounding mod jetjock has a post about.
I know the ecu is cutting fuel because, even though it's sparking, the igniter is telling the ecu it didn't spark.
What I'd like to know, is a simplified answer as to what to check out. I'm thinking about just buying a known good igniter/coil pack off here and swapping them out, but I'd like to test if it's something else first. Is there a way to test if the wiring is good between the ecu and the igniter withouth ripping the harness out and visually inspecting the wires?
I brought it home and figured I could diagnose the problem. I've gone through pretty much everything I can think of to figure it out, but still nothing. I'm paying to keep my car where it's at, so I need to figure this out decently fast.
Some background: 87, 5 speed, turbo, no p/s, no a/c, electric fans, open downpipe, fuel cell. Somebody must've been building a cheap racecar.
Now, it's getting fuel. It has compression. It has spark. But it just cranks all day. It'll "backfire," as in popping in the exhaust sometimes when cranking. The P/O said he had it running with starting fluid about a month ago, hasn't worked for me. I checked codes, only thing that came up was code 14.
Code 14 is a tricky one. I read everything jetjock has posted about what it's about, and I guess I don't full know how to narrow it down. It's either the coil pack, igniter, ecu, or wiring somewhere in between. I'm guessing the wiring, as there's some amateur wiring throughout the car. The plug wires have resistance, the plugs are good, the coil pack is grounded, I think the coil pack ohmed out in spec, the wiring harness off the coil pack is good, I don't have a 3V battery source to test the igniter, but it seems a little corroded. I took it apart and did the redundant grounding mod jetjock has a post about.
I know the ecu is cutting fuel because, even though it's sparking, the igniter is telling the ecu it didn't spark.
What I'd like to know, is a simplified answer as to what to check out. I'm thinking about just buying a known good igniter/coil pack off here and swapping them out, but I'd like to test if it's something else first. Is there a way to test if the wiring is good between the ecu and the igniter withouth ripping the harness out and visually inspecting the wires?
