ApexVIII
15+ Year Contributor
- 812
- 5
- Jan 12, 2008
-
Modesto,
California
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Idle Surge. I had the same problem when I recently started up my new setup. I had a MASSIVE leak at my TB. If you notice, your ISCPosition keeps raising. How far turned in is your BISS?
BLT and then do the BISS work.
do these steps it your shoudl be good
1. make sure you are not venting the BOV-- i kno your not
2. set your idle and BLISS properly (or tweak it to whats needed)
*3. do a boost leak test*
4. check your Throttle cable and Throttle Position sensor (volt meter)
5. Clean your throttle body and plate
6. check your ISC motor coils
7. check your 02 sensor and make sure its not bad or bad connecitions
8. check your Coolant Temp Sensor and make sure its not reading crazy
9. ECU possible caps leaking or problems
10. check you Crank angle sensor
Ad...just....your...BISS
i have like 13456543 times :/
i set it to ISC position 30 like dsmlink says it should be but it still does it
i am haveing trouble with my idle, it goes rich then lean
the RPM;'s go up and down as it geos back and forth,
i cant get the ICS stable
the motor has 180-180-180-180 compression
cam timing is dead on
any idea's
Something from Dmertz on Link: About Adjusting your BISS
Found it
Your BISS is way too turned in. Do the following:
1) BLT
2) Put keys in ignition and turn to the on position
3) Open up ECMLink and then turn both grounds on
4) Turn out the BISS 1/2 turn OUT. (This should raise it high enough to start and idle somewhat)
5) Star car. It should now stay somewhat running. (If not, turn the BISS out a little more and see again)
6) Now that it is running, adjust the BISS until you get to your target idle RPM. This should also now get the ISC to 30 and your LearnedIdleAdjus to 140 (takes some time for it to adjust so just let it idle a bit once you get the ISC to 30 at idle)
Now see if it sticks once you turn off both grounds. If it changes, re-ground and adjust accordingly.
Now do another BLT. If you find one, redo step 6
Congrats, your idle problems should now be ironed out.
Found it
Your BISS is way too turned in. Do the following:
1) BLT
2) Put keys in ignition and turn to the on position
3) Open up ECMLink and then turn both grounds on
4) Turn out the BISS 1/2 turn OUT. (This should raise it high enough to start and idle somewhat)
5) Star car. It should now stay somewhat running. (If not, turn the BISS out a little more and see again)
6) Now that it is running, adjust the BISS until you get to your target idle RPM. This should also now get the ISC to 30 and your LearnedIdleAdjus to 140 (takes some time for it to adjust so just let it idle a bit once you get the ISC to 30 at idle)
Now see if it sticks once you turn off both grounds. If it changes, re-ground and adjust accordingly.
Now do another BLT. If you find one, redo step 6
Congrats, your idle problems should now be ironed out.