hey,
i have a friends e30 with a few issues. i did a few things off the bat, there was a thumping noise from the rear. turned out to be a loose tire. :???: main relay was bad, you could tap on it and the car would turn off. i swapped over all the relays in that bank from my car. (main, fuel, and that other one. heh.) and the car drove a lot better. for instance, the car would turn itself off and then back on again while driving. main relay fixed a few issues related to all that.
but it still bucked really badly. like when a beginner is starting to learn manual and they cant get the car started smoothly. but it will happen while driving along. if you let off the gas, it will stop bucking though. a different friend of mine (also has an e30) thinks it's the transmission. but it happens in every gear, so im prone to believe it's not. if it was 2nd and 3rd, which generally take a good amount of abuse, ok. but 4th? ehh.. ANOTHER friend (also has an e30, im surrounded) suggested it was the CPS. although it had already been tested by friend 2 and he said it was good. it probably ran ok, but while removing it the wire came off the sensor. so it was probably due for a replacement anyway. it still bucked too.
so im at a loss. all the spark plugs have recently been replaced as well. and unfortunately its been sitting for a long long time. 6 months, with half a tank. which was filled to a full tank 3 months ago. ... so the gas is probably halfway bad. but i've never had a misfire that jerks the car that violently. i mean, it jerks the car so violently, that the abs light turns on? i did disconnect the abs relay under the dash to see if it made a difference, like perhaps the abs was randomly hitting the brakes to full lock. but it didnt. im at a loss.
any help is appreciated.
i have a friends e30 with a few issues. i did a few things off the bat, there was a thumping noise from the rear. turned out to be a loose tire. :???: main relay was bad, you could tap on it and the car would turn off. i swapped over all the relays in that bank from my car. (main, fuel, and that other one. heh.) and the car drove a lot better. for instance, the car would turn itself off and then back on again while driving. main relay fixed a few issues related to all that.
but it still bucked really badly. like when a beginner is starting to learn manual and they cant get the car started smoothly. but it will happen while driving along. if you let off the gas, it will stop bucking though. a different friend of mine (also has an e30) thinks it's the transmission. but it happens in every gear, so im prone to believe it's not. if it was 2nd and 3rd, which generally take a good amount of abuse, ok. but 4th? ehh.. ANOTHER friend (also has an e30, im surrounded) suggested it was the CPS. although it had already been tested by friend 2 and he said it was good. it probably ran ok, but while removing it the wire came off the sensor. so it was probably due for a replacement anyway. it still bucked too.
so im at a loss. all the spark plugs have recently been replaced as well. and unfortunately its been sitting for a long long time. 6 months, with half a tank. which was filled to a full tank 3 months ago. ... so the gas is probably halfway bad. but i've never had a misfire that jerks the car that violently. i mean, it jerks the car so violently, that the abs light turns on? i did disconnect the abs relay under the dash to see if it made a difference, like perhaps the abs was randomly hitting the brakes to full lock. but it didnt. im at a loss.
any help is appreciated.
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