Cant get Fire from the coils

[cbass1985]

Hey ya'll im new to this thingy but whatever my problem is that I have a 1987 RX-7 13b rotory. its in great condition. i believe the sparkplugs are good. The motor turns over and everything but i dont get any fire out of the coils. I got the car from a used car salesman/buddy. the ignition coils had been taken off to be used on another car so i bought 2 ""new"" coils from a salvage yard. I hooked them up try to crank it but still get no 'FIRE' from them. Im maily wondering if there could be another problem.... or is it most likely that the coils are bad. If anybody can help i would greatly apreacate it. Thanks HANK

[D3rELiC]

check the Crank angle sensor, or any bad connection
find someone with a 7 nearby and interchange pieces to see whats going wrong or not

[cbass1985]

alright man. thanks i'll try the crank angle sensor first. hmmmm since im not very familiar with these wyankels do you know right off hand if the sensor is on the front of the crankshaft or on the back side near the bellhousing. Thanks
Hank

[WankelTII]

it looks like a distributer, with no cap, just a flat black plastic cover and one little plug coming out one side of it

[lodownlv]

im having the same problem im going to recheck the crank angle sensor also is their any volatge on that harnes and if not any voltage on crank angle sensor and coil packs what would be antother place to look fuses? or any required sensors?

[Mr. Griff750]

Also try regrounding your ignition just for the heck of it

[lodownlv]

regrounding the ignition where?

[D3rELiC]

Originally Posted by lodownlv

regrounding the ignition where?

try the positive born of the battery

[WRC85]

i had the same thing happen, but it was on a toyota pickup. I don't know how similar they are, but with that it was the igniter, which is the little metal box that the coil sits on and its basically a computer. It was easy to fix, but the part is incredibly expensive, it listed at 600 bucks
and they'd sell it to me for 400. I ended up getting one from a junkyard for 70. you could check that, but i'm not sure how, we just eliminated everything else that it could have been.

[lodownlv]

i just found that im not getting power to anything i think its the main relay im going to check later today.

[drftk1d]

check the fuse box underhood.

[lodownlv]

got + 12 THEIR any other sugections what sensors have to be connected in order for the engine to start

[lodownlv]

problem fixed i found it to be no ground to ecu, fried ecu, fied crank angle sensor, fried traling and leading coils. got it running but keeps stalling. still working on the mazda pain!