at a crossroad
09-18-2006, 10:52 PM
#1
Senior Member
Thread Starter
Join Date: Jan 2003
Posts: 260
Well bad news with the TII. It wont run... wont even try. Motor is not the problem. Problem is engine management.
I put the TII back together over the weekend, and finally got to turn the key... only to hear puffs of air. I started poking around and doing the usual checks figured I just missed something. I found I have spark (checked with a timing light) The fuel pump IS running when its cranking, so that means the ecu is reading the air flow meeter. Theres fuel in the fuel lines, but no matter WHAT I do, the injectors wont fire.
Not a drop of fuel will come out of those injectors. I checked the wiring, and My resistance is correct from the resistor pack plug back to the ECU plug is 2.4-2.5ohms which is correct for low IMP injectors. All lines from the restor pack read around 6 ohms, which is correct. I have power going to the resistor pack to power the injectors. I also put connector plugs on the wiring harness for the injectors. the first time I connected the injectors I accidentally crossed the leads and put positive on negative and negative on positive on the injectors. From what ive heard and read this should have not have hurt anything. That has since been fixed
I tried addind additional grounds. Did nothing.
The ONLY odd ball thing that happens with the car is not all the warning lights come up on startup like theres a bad alternator connection to the two prong plug. But I dont see how this would keep the injectors from firing.
Ive also done a complete emissions removal on this car (s4) All remaining vacuum ports were properly capped off and new silicone lines were run to the sensors that needed them.
I cannot for the life of me figure out what the hell is going on... it makes NO sence, logically theres nothing preventing the injectors from firing.
Anyway im seriously about to call up gary and have him install a microtech on my car and be done with it. Or pay someone to fix what I got now...
Any ideas? Ive tried EVERYTHING
I put the TII back together over the weekend, and finally got to turn the key... only to hear puffs of air. I started poking around and doing the usual checks figured I just missed something. I found I have spark (checked with a timing light) The fuel pump IS running when its cranking, so that means the ecu is reading the air flow meeter. Theres fuel in the fuel lines, but no matter WHAT I do, the injectors wont fire.
Not a drop of fuel will come out of those injectors. I checked the wiring, and My resistance is correct from the resistor pack plug back to the ECU plug is 2.4-2.5ohms which is correct for low IMP injectors. All lines from the restor pack read around 6 ohms, which is correct. I have power going to the resistor pack to power the injectors. I also put connector plugs on the wiring harness for the injectors. the first time I connected the injectors I accidentally crossed the leads and put positive on negative and negative on positive on the injectors. From what ive heard and read this should have not have hurt anything. That has since been fixed
I tried addind additional grounds. Did nothing.
The ONLY odd ball thing that happens with the car is not all the warning lights come up on startup like theres a bad alternator connection to the two prong plug. But I dont see how this would keep the injectors from firing.
Ive also done a complete emissions removal on this car (s4) All remaining vacuum ports were properly capped off and new silicone lines were run to the sensors that needed them.
I cannot for the life of me figure out what the hell is going on... it makes NO sence, logically theres nothing preventing the injectors from firing.
Anyway im seriously about to call up gary and have him install a microtech on my car and be done with it. Or pay someone to fix what I got now...
Any ideas? Ive tried EVERYTHING
09-19-2006, 12:54 AM
#4
Senior Member
Thread Starter
Join Date: Jan 2003
Posts: 260
well its got a hacked to hell wiring harness, BUT it did run on this harness with the previous owner, and with me when it was running only on one rotor.
a new wiring harness would be nice, but I dont think their available anymore, and most used ones are beat to hell. Microtech sounds so nice.
a new wiring harness would be nice, but I dont think their available anymore, and most used ones are beat to hell. Microtech sounds so nice.
09-19-2006, 01:03 AM
#5
Senior Member
Join Date: Jan 2006
Location: Renton, WA.
Posts: 303
sorry matt to hear that u r having problems with ur car. i got a shell this weekend but i am giving up and not changing anything on mine i am just trading with ryan for his nissan 200sx. i just need a car and it will take to long to do anything to mine in as little time as i have to do it in. i have one month before my brother inlaw kicks me out of his house and then i am going to go up to oakharbor to stay with speedrated. just for a while until i get my feet up in the air. any sorry about ur car dude.
09-19-2006, 01:43 AM
#6
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Join Date: Mar 2003
Location: from spokane, now a west sider...
Posts: 422
Originally Posted by hal' post='837587' date='Sep 18 2006, 11:03 PM
sorry matt to hear that u r having problems with ur car. i got a shell this weekend but i am giving up and not changing anything on mine i am just trading with ryan for his nissan 200sx. i just need a car and it will take to long to do anything to mine in as little time as i have to do it in. i have one month before my brother inlaw kicks me out of his house and then i am going to go up to oakharbor to stay with speedrated. just for a while until i get my feet up in the air. any sorry about ur car dude.
09-19-2006, 01:44 AM
#7
Senior Member
Join Date: Feb 2005
Posts: 519
megasquirt hint hint
standalone does make things easier in a way though. Maybe when you crossed the leads you popped a relay or a fuse (simple thing but you probably alrady checked that). Since injectors are an electrical component and the leads did get crossed it is possible that the injectors are not good any more. Only other thing I could think of is maybe a related sensor is not comunicating but since you are getting spark that doesn't seem like it would be the problem. Maybe you can borrow some low imp injectors that are known and good to see if that is your problem (wally hojo's car is down right now and it was an s4 iirc, maybe he could help). Hope you get it figured out, but if you got the resources to go the standalone route then by all means go for it. I know microtech has the largest number of cometent tuners that can work with them in the area, I also hear that corksport is good with wolf3d. There are definately some options for the standalone route, hopefully you find something for a good deal that will do what you expect.
standalone does make things easier in a way though. Maybe when you crossed the leads you popped a relay or a fuse (simple thing but you probably alrady checked that). Since injectors are an electrical component and the leads did get crossed it is possible that the injectors are not good any more. Only other thing I could think of is maybe a related sensor is not comunicating but since you are getting spark that doesn't seem like it would be the problem. Maybe you can borrow some low imp injectors that are known and good to see if that is your problem (wally hojo's car is down right now and it was an s4 iirc, maybe he could help). Hope you get it figured out, but if you got the resources to go the standalone route then by all means go for it. I know microtech has the largest number of cometent tuners that can work with them in the area, I also hear that corksport is good with wolf3d. There are definately some options for the standalone route, hopefully you find something for a good deal that will do what you expect.
09-19-2006, 01:46 AM
#8
Senior Member
Join Date: Mar 2003
Location: from spokane, now a west sider...
Posts: 422
keep at it matt, if you dont keep tryign to solve the problem and go microtech its going to be another 3 months and 3 grand before the car is running. im sure its something very simple. time to bust out the FSM 
09-19-2006, 01:50 AM
#9
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Thread Starter
Join Date: Jan 2003
Posts: 260
well I thought of something. I could splice in a bypass wire for the resistors on the primaries and use these high impedance injectors I have sitting here. It would at least let me know if its the injectors or not.
09-19-2006, 04:25 AM
#10
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Join Date: Jul 2002
Location: DC
Posts: 875
Wait so you're getting a low inpedance signal at the ECU? If that's what your saying that's not correct. ALL ECU's want to see a high impedance signal. If you're running low Imp you have to have resistors if high imp then none are needed. If your getting a low impedance signal at the ECU there must be a problem inbetween. maybe your resistor box died. I thought the high imp signal should be around 14 ohms... I'm a carb guy, but this is what i was thinking.