Car starts - runs fine for 10 seconds - then runs like SHIT!

[loonibab325i]

you might have a blown ecu? I am not sure, but i know when my car did the same thing, it was because my ECU was fried, compliments to the paint shop.

[RyanZ06]

you might have a blown ecu? I am not sure, but i know when my car did the same thing, it was because my ECU was fried, compliments to the paint shop.

I'm going to try my other ECU on tuesday. Man I hope that isnt it. :(

[grib]

I am currently having the same problem, but with a little bit different twist.

-413 ECU, Red Label
-S52 converted to OBD-1 (all new sensors)
-Tried it with both 3" MAF and 3.5" MAF

With the stock chip it starts and runs pretty damn well. Except after 5 minutes or so the CEL comes on (probably because the maps are not correct for 24 lb injectors?)

With my Turner/TMS chip it has the exact same problem you described: starts for 5-10 seconds, then bogs and dies.

[matt]

I am currently having the same problem, but with a little bit different twist.

-413 ECU, Red Label
-S52 converted to OBD-1 (all new sensors)
-Tried it with both 3" MAF and 3.5" MAF

With the stock chip it starts and runs pretty damn well. Except after 5 minutes or so the CEL comes on (probably because the maps are not correct for 24 lb injectors?)

With my Turner/TMS chip it has the exact same problem you described: starts for 5-10 seconds, then bogs and dies.

What codes did you pull from the stock chip with a stomp test?

Any codes from the TMS chip?

[RyanZ06]

I am currently having the same problem, but with a little bit different twist.

-413 ECU, Red Label
-S52 converted to OBD-1 (all new sensors)
-Tried it with both 3" MAF and 3.5" MAF

With the stock chip it starts and runs pretty damn well. Except after 5 minutes or so the CEL comes on (probably because the maps are not correct for 24 lb injectors?)

With my Turner/TMS chip it has the exact same problem you described: starts for 5-10 seconds, then bogs and dies.

I will finally get the chance tomorrow to test my other ECU.

I'm going to put my Red Label stock chip into my Silver Label 413. As long as the chip it self isnt bad, this should eliminate my worry that the DME is bad.

[grib]

What codes did you pull from the stock chip with a stomp test?

Any codes from the TMS chip?

Stomp test isn't working. When I turn the key to "On" all of the lights in the cluster are illuminated (including the CEL). 5 stomps (or full cycles of the T-body by hand) does nothing. (Not change in the CEL.)

For the record, I tested the TPS per Bently. The resistance is a little higher than spec (1750-4500 ohm), not sure if this is enough to mean the TPS is bad?

[japspecvr6]

Man im gong the same problem.....

[ColdAccord]

same thing happened with my m50 e34. new cam pos sensor, swapped out the maf, still no luck. same exact symptoms

dme was bad.

[ZiMMie]

i will suggest double checking ur crank sensor wires if they are not new.
Especially for M/S52 Obd1 converted. they then to get old and crack.

grib double chk ur crank sensor.

[japspecvr6]

i will suggest double checking ur crank sensor wires if they are not new.
Especially for M/S52 Obd1 converted. they then to get old and crack.

grib double chk ur crank sensor.

Honestly I think i have change the crank, cam, coolant sensors on the car. it just back fire as i hit the gas but it doesnt bog or down down. what do yall think it could be ?

[japspecvr6]

see the thing is that it keeps givin me code 1222. How do i correct that?????

[e30s52]

find out what the code means and correct it. if you have use to an scan tool i would highly recommend it. scan tools have saved my ass so many times