Loses all power for 1/2 second when snpping to WOT
05-02-2022, 08:57 AM
#1
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Car: 1990 IROC
Engine: 383 Trickflow HSR
Transmission: auto
Loses all power for 1/2 second when snpping to WOT
Stealth ram intake. 383. Runs good otherwise. If I progressively press the pedal to WOT the problem doesn't exist. However if I go WOT instantaneously the car completely shuts off for a split second and then picks back up. No SES lights, nothing. I have the EBL ECM from EFIdynamics. I datalogged it to see but it tells me nothing. It appears in the laptop that the car is completely shut off during that 1/2 second. This problem appeared out of nowhere so I have my doubts that it has anything to do with the tune. Loading the parts cannon... I have changed...
ignition coil
Ignition control module
Map sensor
The distributor, plugs, and wires have maybe 800 miles on them. Anything else to try? Anyone have or had a similar problem? Should I take this to the DIY PROM section?
ignition coil
Ignition control module
Map sensor
The distributor, plugs, and wires have maybe 800 miles on them. Anything else to try? Anyone have or had a similar problem? Should I take this to the DIY PROM section?
05-02-2022, 09:46 AM
#3
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Car: 1990 IROC
Engine: 383 Trickflow HSR
Transmission: auto
Re: Loses all power for 1/2 second when snpping to WOT
Is there something specific I should be looking at there? I'll double check the datalog tonight but I'm %99 sure the dummy light comes on when I accelerate.
05-02-2022, 09:57 AM
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Car: 1990 IROC
Engine: 383 Trickflow HSR
Transmission: auto
Re: Loses all power for 1/2 second when snpping to WOT
Narrow band blues. However I did notice in the datalog that the readings from the O2 are very erratic during normal ops.
05-02-2022, 10:10 AM
#6
Re: Loses all power for 1/2 second when snpping to WOT
Erratic as in goes back to .450mv at idle ?
Not sure how your able to tune wot targeting .950mv or so ?
might try adding fuel for pump shot to see if that helps with it not falling on its face.
a wideband is a inexpensive necessary tool to have.
Not sure how your able to tune wot targeting .950mv or so ?
might try adding fuel for pump shot to see if that helps with it not falling on its face.
a wideband is a inexpensive necessary tool to have.
05-02-2022, 10:21 AM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Loses all power for 1/2 second when snpping to WOT
Large cap HEI with vacuum advance??
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05-02-2022, 10:57 AM
#8
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Car: 1990 IROC
Engine: 383 Trickflow HSR
Transmission: auto
Re: Loses all power for 1/2 second when snpping to WOT
This scenario will probably be the one that makes me pull the trigger on a wideband
05-02-2022, 10:57 AM
#9
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Car: 1990 IROC
Engine: 383 Trickflow HSR
Transmission: auto
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