I started the car with no problems, beautiful idle, I shut it down and start right back up just fine...THEN after having it at idle for a while It started backfiring so I shut it down. Try to start back up and it started backfiring even when cranking!!! It will not start not even turning the fuel pump off. Never seen that before someone help me.

 

Could it be timming or the tps?

 

It has got to be a ******* gremlin...

 

It kinda feels like if the coils stop firing when I stop cranking.

 

No answers???? Could it be a faulty primary injector plug? One of them does not look so good....

 

check your timing. Maybe leading and trailing are backwords? i dont think its that though since u said it ran fine first. Its got the be the timing, sounds like it got thrown way advanced.
Injector plug? the electrical one? is it on the primary or secondary?

 

Primary...

 

timing that usually needs to be reset ....make sure your gas enter and return lines are right your car will start fine then mess up because of the lines being crossed but i have faith in you and say it isnt that

 

check your timing. and fuel lines just like rotorific sayed!!!

 

That and maybe pull your battery cable for a while to reset the computer. Step on the brake pedal a few times to release all the juice.

Oh, and check your AFM wires and plug.. Looks for vacuum leaks while your at it.

 

Change your plugs. A fresh rebuild, especially one with fair or worse condition used housings, will foul plugs like a bitch from just running so rich. Turbo Ii rebuilds using old housings are especially bad, my last one fouled 4 sets before breakin was done...some oil/atf in the chambers while doing this wont hurt either, cause they flood badly.

 

It was strarting so nice and reving so smooth... I poured a little atf and it started again for like 3 seconds and nothing after that I even killed my battery. The fuel lines are fine and so is the timming, compression is great. Should I have my ecu repaired? Could it be the tps? Could it be a ******* halloween gremlin? I even changed the injectors. My injector plug on the front primary is real bad the plugs inside move. I changed them for 550cc oval high impedance (Yes I bypassed the resistor pack successfully) after that I poured the atf and it started for like 3 secs and died. Just trying all that I can.

 

My computer does not reset it is an 87. They don't hold the codes (So I read somewhere).

 

I am going nuts... I have rebuilt engines for so many people and mine is the one with the gremlins. It has to be an electrical problem. The cas is in the same spot where I left it. I have never heard backfiring while cranking. I am gonna try to start it in the morning. If it works I am removing or replacing the tps... Yo Kevin didn't you mention somewhere that it would work without tps? How you did it?

 

UH, unplug it and reset the idle...?

I have done it on a few cars, most will tolerate it, some will not run without it, dunno why theye different, all I can say is try it, but TPS will not stop your car from starting. I say either timing is way off, or plugs are fouled or the thing is flooded.

 

Crank angle sensor would be my guess if its not the plugs. thats the only indicator to the ECU where the engine is in its stroke. if the computer thinks its 10 btdc and its really 60 then you have problems.... maybe it slipped? it could be that you have so much fuel in the exhaust that it sparks it off when you crank it. I had that happen once. People actually ducked because it sounded like a gun shot. I was laughing pretty hard that time. Check the plugs before you waste your time on anything else.

My rebuild was a real hoe for the second through 5th times starting it. I shut it down 45 seconds after lighting her off so I could put the hood back on and take it off the jackstands and after that it didn't like starting till I got 20 miles on her and she's fired every time since. (over 2K miles now)

 

sell it. buy a mustang

 

Check the error codes out of the computer. This sounds like what happen to me. I rebuild my motor and put on a S5 intake and it ran some what, but it was worpped so I put back on my S4 one. After I did this I couldn't get the car to start, all it would do is backfire every now and then in the exhuast. Well I checked the error codes and it said at the water thermo sensor was bad. I replaced the sensor(16 bucks at autozone) and replaced the conenctor and it fired right up.

So that might be something to look at too.

 

the cas will move if you dont tighten it down, i've done it, maybe you did too?

mike

 

 

check sig

 

There has got to be something wrong, maybe the engine harness? I have noticed that not all the alarms in my car work all the time. For example the seat belt warning, the door open warning. I added the extra grounds to the ecu and nothing changed, once I shook the harness and the damn things worked for like two days.I don't mind the inside car alarms, but I am wondering if the harness is bad. Sometimes It happened that the primary injectors would have no 12v with the ignition on. That is not the case now but it might be a sign... Don't you think? HHHHHHHHHHELPPPPPP!!!!!!!!!!!!!!

 

CPU and ECU are totally different systems. one runs the motor and the other runs all the other bullshit that doesn't work right most of the time anyways.

Don't worry about the idiot lights untill you get the engine runing properly. they really arent related in the slightest to your problem with the ignition.

 

Ignition? The cas was screwed on tight. It did not move, I tried another cas from my friend's TII which works fine and it is not the problem. Could it be the leading coils?

 

bump