n0va91TSI
15+ Year Contributor
- 267
- 0
- Mar 2, 2004
-
Honolulu,
Hawaii
First off, I have read all the threads and read all the write-ups.
IF YOU HAVE A SURGING 90-91 TURBO DSM PLEASE READ THIS!
The problem with DSMs and idle surge is that there are like 20 different types of idle surge and different causes and solutions for each. The type of surge i have only happens in 90-91 turbo cars.
When the car starts it revs to about 2000rpms and quickly drops to about 1500rpms as it warms up the base idle will eventually go down to 1000rpms (my biss is all the way down)
Until the car is all the way warmed up if I coast out of gear for even a few feet it will idle surge between 1000-1500 rpms until the car comes to a complete stop where it then surges a few more times and then stops surging.
Even if your sitting on a hill and you let it coast a few feet just by letting off the brake it will start surging.
Once the temp needle is standing straight up it wont do it anymore.
I have bought 2 throttlebodys with ALL the sensors, and a few extra ISC motors that all work perfectly and still nothing. My idle has been properly adjusted to get it as low as posible which is 1000rpms. I just bought another FIAV because I may have to block it off to stop the surge but i live in a place with cold weather and really dont wanna have to resort to that. Plus its insanely hard to get it off the throttlebody without stripping the screws as I found out the hard way on a $115 waste of money.
I know other people have this problem, Im sick of wasting money and I really wanna know...
HAS ANYONE FIXED THIS??? AND HOW???
IF YOU HAVE A SURGING 90-91 TURBO DSM PLEASE READ THIS!
The problem with DSMs and idle surge is that there are like 20 different types of idle surge and different causes and solutions for each. The type of surge i have only happens in 90-91 turbo cars.
When the car starts it revs to about 2000rpms and quickly drops to about 1500rpms as it warms up the base idle will eventually go down to 1000rpms (my biss is all the way down)
Until the car is all the way warmed up if I coast out of gear for even a few feet it will idle surge between 1000-1500 rpms until the car comes to a complete stop where it then surges a few more times and then stops surging.
Even if your sitting on a hill and you let it coast a few feet just by letting off the brake it will start surging.
Once the temp needle is standing straight up it wont do it anymore.
I have bought 2 throttlebodys with ALL the sensors, and a few extra ISC motors that all work perfectly and still nothing. My idle has been properly adjusted to get it as low as posible which is 1000rpms. I just bought another FIAV because I may have to block it off to stop the surge but i live in a place with cold weather and really dont wanna have to resort to that. Plus its insanely hard to get it off the throttlebody without stripping the screws as I found out the hard way on a $115 waste of money.
I know other people have this problem, Im sick of wasting money and I really wanna know...
HAS ANYONE FIXED THIS??? AND HOW???
