Hey me and a friend where adjusting the timing on my camaro and it back fired then died imediatly now we have no power to the fuel pump starter gauges or alarm which is all controled by the ignition switch now here is the trick the ignition switch has no power coming to it tryied to bridge every terminal to ground no sparks what so ever ... how ever when the power wires for the fuel pump and the wire to the cooling fans were bridged to a known power source the worked as well as the starter if you can help that would be awesome ... we did check all fuses that we could find
carbed 305 original
now tbi converted to carb
after market alarm
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Re: 1987 camaro iroc z28
There is no main fuse in the camaros and by losing everything its telling me that you have probably blown a couple of the fusible links....they are in line in the wires themselves and look like a piece of black licorice nibs (hope you know what i mean) about an inch long and tubular if you cut out the link and strip the wires and strip them them re-connect them together you should restore the power.......these links are usually near the starter by the soilonoid in the group of wires connected to the big terminal....however i'm not sure how the backfire is related but that should restore the power to everything hope this helps.........if not let me know ill keep your problem in mind til i hear from you again.....Good luck!
You might want to chek the switchrelay, its on the passenger side at the fire wall, hard to find,another way to chek is to find the fuelpump relayswitch. its on the driver side at the firewall ,i belive that it has 3 wires green ,black ,orange the orange is thiker then then the others ,test for power with test light.if ther is no power jump it from battery and if everything works ,yes it is your switchrelay problem fix.let me now if it help!
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Put car in neutral, remove wheels, calipers and rotors, diff. cover. rotate carrier until you see wrist pin retaining bolt, remove bolt and slide out the wrist pin out of carrier. Next push axle inward to remove inner axle "C" retainer washer then slide axle out of tube. Then pry off axle seal and with slide hammer w/attachment remove axle bearing.
I'd be looking for a few things there. First, make sure that the temperature sender is working. If not, the computer thinks the engine is always cold so it sends more fuel even though it's not needed. Next, make sure that there aren't any exhaust leaks ahead of the O2 sensor. That will cause the sensor to think that the actual mixture is lean, again asking for more fuel. Also check that the O2 sensor is good. Out of range can do the same thing. There are other more complicated causes but those are the most common.
This is only a suggestion but I had a similar problem. I have a 1987 CamaroIroc z fuel injected. I had a similar problem with the car back firing through the throttle body. It turns out it was the TPI sensor mounted on the front of the throttle body. The sensor is mounted on the front of the throttle body to the left on my car, the opposite side of the linkage. Its black in color and has a electrical connection to the back side of it. Its triangular in shape and mounted with to hex head screws if this is of any help to you locating it. Try adjusting it first that may correct your backfiring problem like it did for me. If this was any help to you leave me some feed back.
Fuel pressure? Do you hear the fuel pump running? Read the codes to see if ECM is still alive. Do you have spark at the plugs? Remember all motors need 3 things to run air, fuel, and fire at the right time.
bruce in the wireharness on the plugins they have numbers, write them down and go to the neares chevy dealerchip,talk to the parts personel if posible to the parts manager.and talk to him about the problem you are running into ,then they can ck the numbers to see if you have the right wireharness for your z28 camaro,you might have a harness for a camaro but it could be tha its for a v6 or just a camaro, and not a z28 camaro that couid be the diference.let me know