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serious help needed- ecu?

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tlikethedrink

15+ Year Contributor
361
91
Sep 11, 2007
ABQ, New_Mexico
this morning on my way to work i had some serious problems. it almost feels like a really bad boost leak, i cant accellerate over 3k. but i looked down at the tach and noticed it was all over the place! it went past 9k when i tried to give the car a little gas.

it started when i tried to speed up to 45 getting on the main road. it felt like the tranny slipped (i recently had it rebuilt). it did shift and try to kick in the OD but lacked the power to go. i had to turn around a head back home.

im going to look for loose couplers/sensors and that could explain if its a boost leak or not. but that still leaves me with the tach. im thinking ECU and the engine isnt getting spark. it revs fine in park, no tach problems either. it only seems to happen while driving and boost.
 
little update:

while typing the last post i had disconnected the battery in hopes to "reset" the ecu. its seems to have worked with the acception of the tach. the car runs normal, the tach accels up to about 3k then starts to move around wildly.

i may just try to drive to work and see how it goes.
 
Pull out your ECU I would bet you have a leaky cap. Mine did same thing and got worse over time till it was at the point where it wouldnt idle.
 
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