FD broke down, fixed now backfires. Help please!
my FD broke down the other day. I was just driving it and the engine died and would crank but not start back up. I towed it back to my shop and later we diagnosed it as a bad crank sensor. one of them was reading no continuity. I swaped in a spare one from a spare motor and the car fired rite up. So yay figured the problem was fixed. Today i went to test drive the car and at about 3000-3500rpm the car will backfire. At idle if you give it gas the car will backfire also. car ran fine prior to the crank angle sensor problem and i dont have a check engine light. Does anyone have ideas on what it could be or what i can check out? need some help. Thanks
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try resetting the ECU,,, sounds a little like limp mode (but no engine light????)
also make sure the 2 crank angle sensors are not plugged wrong way round (may sound really stupid but when i bought my car with problems 2 years ago,,, i had same problem and it turned out to be that.),,,(symptoms where rough idle back firing and would not accelerate, but did start up ok??) |
Don't forget the Ye Olde Map Sensor.
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cool thanks...ill check that out later today and let you kno...
weird tho, it idles normal, if you keep the rpms under 3-3.5k it feels normal, but go above that it backfires.... |
hummm.....MAP sensor checks out ok. we reset the ECU and it didnt do anything....this sucks.
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