1200rpm cutt off
#1
1200rpm cutt off
Well I got my car idling around 850rpms nicely.
Problem is trying to tune the VE fuel table any time I get close to 1200 my tach dips quickly, it won't let me go above it, happens slowly or if I try to push the pedal in quickly, what I've heard so far is its because of the VE table. I'm wondering if anyone seen anything like that before that it maybe wiring, signal problems?
I'l upload the log of the drop off in a minute with the msq
Any thoughts thanks
Problem is trying to tune the VE fuel table any time I get close to 1200 my tach dips quickly, it won't let me go above it, happens slowly or if I try to push the pedal in quickly, what I've heard so far is its because of the VE table. I'm wondering if anyone seen anything like that before that it maybe wiring, signal problems?
I'l upload the log of the drop off in a minute with the msq
Any thoughts thanks
#3
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This is a weird one. I'm having a dickens of a time figuring out the log without a TPS reading. Can't tell what's causing what...
AFRs look reasonable. Spark angle isn't doing anything weird.
CLT reading is really strange. Was the engine actually running at 230-250°F? IAT looks damn high, too. 150° according to the log.
Methinks someone hasn't calibrated their sensors.
I'd suggest you disable Coolant-Corrected Air Density. See if that does anything useful.
AFRs look reasonable. Spark angle isn't doing anything weird.
CLT reading is really strange. Was the engine actually running at 230-250°F? IAT looks damn high, too. 150° according to the log.
Methinks someone hasn't calibrated their sensors.
I'd suggest you disable Coolant-Corrected Air Density. See if that does anything useful.
#4
I was tuning while the engine was at running temp, idling, fan was on and temp guage on my dash was at running temp like normal,
hmmm
I have the maf still in using the maf for the stock IAT sensor, and the exhaust manifold cover is not on it currently, maybe I should put it back on to lower the air temps going into the intake, I have that first part of the intake remove the curls upwards to the fender area.
is the small jumps in clt and iat because of wiring possibily?
Should I use shielded wire instead?
Also I disabled mapdot by throwing 2540 into the threshold so I could tune the tables, atleast thats what I got from the ms extras manual for tuning
I downloaded the hires 10g code and used easytherm to put both sensor as rx7 coolant \ rx7 iat with a bias of "Standalone: Bias will be 2490 for each"
hmm maybe I have the wrong bias for the stock IAT sensor
hmmm
I have the maf still in using the maf for the stock IAT sensor, and the exhaust manifold cover is not on it currently, maybe I should put it back on to lower the air temps going into the intake, I have that first part of the intake remove the curls upwards to the fender area.
is the small jumps in clt and iat because of wiring possibily?
Should I use shielded wire instead?
Also I disabled mapdot by throwing 2540 into the threshold so I could tune the tables, atleast thats what I got from the ms extras manual for tuning
I downloaded the hires 10g code and used easytherm to put both sensor as rx7 coolant \ rx7 iat with a bias of "Standalone: Bias will be 2490 for each"
hmm maybe I have the wrong bias for the stock IAT sensor
Last edited by Techsalvager; 08-10-2010 at 08:11 PM.
#8
I'm back and I think I may have an better idea, I think its somehow related to coolant\air correction.
I reflashed with MSPNP 90-93 with afm to get the correct sensor data into my MS
Problem is I noticed in the coolant air correction screen that its reading IAT at the top right
220F+.
I did see peak of 155f in tuner studio for the IAT guage, I'm gonna throw the intake pipe that goes the fender and the exhaust header cover back on and see what happens
if its still doing same thing, I'm gonna buy a GM IAT mount it on one of the plastic pipes near the tb and test.
I reflashed with MSPNP 90-93 with afm to get the correct sensor data into my MS
Problem is I noticed in the coolant air correction screen that its reading IAT at the top right
220F+.
I did see peak of 155f in tuner studio for the IAT guage, I'm gonna throw the intake pipe that goes the fender and the exhaust header cover back on and see what happens
if its still doing same thing, I'm gonna buy a GM IAT mount it on one of the plastic pipes near the tb and test.
#9
After getting together with some friends, I believe to found what maybe causing the problem.
Spark
When reving up the rpms on the car dash drop alot more then compared to tuner studio rpms, also if you wot the car the rpm drop to 0 and with the timing gun hooked up, spark is erratic
Also the iginitor gets super hot.
Spark
When reving up the rpms on the car dash drop alot more then compared to tuner studio rpms, also if you wot the car the rpm drop to 0 and with the timing gun hooked up, spark is erratic
Also the iginitor gets super hot.