my e30 revs to 4500

[weaksauce]

unplug the "new" 02 sensor and drive it around and see if it still does it.

This should put the car in open loop and take the closed loop timing advance out of the equation.
Also wiht the larger injectors, it could be flooding out the plugs. Have you pulled them out to look at them yet?

[619E30]

afm?

[Adrian_Visser]

I highly doubt it has anything to do with an engine ground my eta ran and even started fine with only one tiny ground strap from the back of the valve cover to the firewall for quite a while (until I found out). The large one from the oil pan cam off.

[e30-325]

hrmm engine ground?

i have an 87 IS and the only engine ground i found was from the oil pan (by the level sender) to the frame of the car.

Anymore that i should have that aren't there?

[bmwstephen]

hrmm engine ground?

[monkeytaco]

Pull that m20 and make it into a coffee table. I know you got a shiny m50 waiting to go in there.

GOGOGOGGO

[e30-325]

i checked my cps, afm, and coil and they all checked out fine.

BUT tonight i was driving home as usual and the weirdest thing happened, i was at like 3k rpms just cruising and the tach just dropped off the face of the earth to 0 rpm, the CEL came on and it caught itself again and went back to normal cruising speed. the car stalled for the second the tach plummeted but it came right back to life.
ANYONE?

[e30-325]

i pulled the valve cover and everything was fine, no broken rockers. I also don't think this is a fuel issue. I'll check my CPS today with a multimeter and get back to you guys.
another thing i dont know if i said, sometimes when the CEL comes on, its like theres a loose wire and the CEL flickers like crazy. im determined to find this wire if there is indeed a loose one

[bimmer_E30]

Could be a broken rocker arm? make a video.

i would say a bad fuel pump too.

[e30-325]

NEW DEVELOPMENTS!!!

lol
well i was driving home and my car really starts to wig out. like im at 75mph with about 3300 rpms. its bucking, acting like theres no fuel but the car doesnt die. basically when i floor it from 75 in 5th gear it wont go anywhere at all. but i had to get home so i downshifted to 4th to be at like 4k rpms at 75 and it drove fine. the whole hour drive home it did this so i just stayed in 4th most of the time. then i started to see if my rev limiter was still there, but it wasnt. it actually revved to the real limiter. NOW does anyone have a better idea?

[bimmer_E30]

you must have a launch control lol

[e30-325]

I think its because your car has rust, and it doesn't want to go so fast the body panels will shake and fall off. Like self preservation. LOL

I say electrical. He rebuilt the whole head and didn't hook something up correctly. (I was the one who helped him properly wire his dizzy to get it to start wooo!)

Thats because the dizzy was labeled wrong cuz it was from ebay. SORRY my car isnt from colorado where theres no rust. :neutral:

haha:rofl:

[monkeytaco]

I think its because your car has rust, and it doesn't want to go so fast the body panels will shake and fall off. Like self preservation. LOL

I say electrical. He rebuilt the whole head and didn't hook something up correctly. (I was the one who helped him properly wire his dizzy to get it to start wooo!)

[Philo]

Crank Positioning Sensor.

[e30-325]

CPS? would that be crank position sensor?

i bought a new one from bav auto in november of last year. havent checked it though, only cleaned it