6G Celicas Forums

My car is a 98 gt with 5sfe. Engine was running rough on an idle then check engine light started to blink. Drove to autozone for free obd 2 test and on the way there within 5 miles I saw sparks coming from under passenger side wheel well. Turned car off immeadiatly opened hood and exhaust manifold was glowing red.I towed the car home. A hole was burned in the precat where it meets the flex pipe at the flange. I replaced exhaust manifold and precat with a header off ebay;Which fits perfectly and has both 02 sensors. I started car again it ran fine for about 5 min. I reved it up to about 4k and check engine light began to blink again and had a rough idle again. Bought OBD 2 tester and I get a cylinder 1 misfire a p301 code. I removed wires and plugs and on cylinder 1 and 2 there was fluid present but I'm not 100% certain if it was gas or antifreeze. I then checked compression cylinder 1 is at 185 cylinder 2 is at 190 cylinder 3 is at 190 and cylinder 4 is at 210. From my understanding there is a min of 145 with a tolerance of 14 psi between cylinders. So I am not sure as to where to go from here. Is it a blown head gasket or a warped head? Could it be a cracked cylinder wall? Perhaps even a bad fuel injector? Maybe a bad cap and rotor or wires? I even have a notion it might be a bad O2 sensor. Any help or insight would be greatly appreciated as I am kinda lost as to go from here. Thank you.

I've recently changed the distributor on the vehicle, checked the voltage of igt signal at the ecm, made sure voltage is coming to the igniter,and that voltage is present at ecu. When I try to jump E1 and T1 of the diagnostic box the check engine light never blinks it just stays on constanly. There is voltage to E1 terminal. Does that mean my ecm is bad?

That would be awesome if you could do that for me. Thanks

I am having a very difficult time figureing out why I cant get any spark.The car turns over but gets no spark. I have replaced the dsistributor cap and rotor, the plug wires, the plugs, the coil and the igniter. I am not getting any spark from the coil but I get 12 volts from the coil when using a multimeter with thew ignition on.does anyone have any other ideas as to what the problem could be? Maybe my ECU? Is there a wire that goes from the distributor that tells the coil/igniter to spark or is it on a indepent system? Any help would be greatly appreciative. Thanks