Sharingan3
New Member
- Joined
- Dec 28, 2006
So I hooked up my powerlogger for the first time in months (I know, shame on me for my neglect) due to an incessant check engine light. I figure it's probably just throwing a code for an O2 sensor, but to my surprise it gives me like 8 codes ranging from O2 sensor to MAF sensor to even a code for ignition module error (I'll list all the codes later if we get that deep into this. I'm hoping this is a no-brainer quick fix). Common sense would tell me under most normal circumstances, there's no way that all these things started going wrong at once. I'm sure it COULD happen, but not likely. I have a friend who works on mid to late eighties pieces of crap for a living and after I gave him a key piece of info, he told me the computer or prom may be taking a crap. His reasoning is this: When the computer/prom starts to fail in this vintage vehicle, they are known to give a code for either too high or too low coolant temp., which mine did, even though the actual temperature (mechanical guage reads 185 degree operating temp. in concurrence with the powerlogger temperature reading) is normal. He also said to check all my grounds, which I did anyway. Besides, I would have to have a bad ground on all devices the ecm is giving a code for. Again, not likely. I was also told to twist/flex the ecm while the car is running and see if it smoothes out. I don't think it's running rough, unless it always ran like crap. Last thing: If I take it out on the highway and drive it normal, it drives fine. If I put the pedal to the floor, however, it will accelerate only to about 12 or 13 lbs. boost and hold there (almost like stock). It will keep pulling, and won't detonate or knock, but won't proceed to the 25 lbs the computer and the gate are set to. Obviously don't want to start throwing money at this one. If anyone could help, I would like very much so.
Thanks.
What the hell, here are the codes as per the Powerlogger:
34 - Mass AirFlow Sensor (MAF) reading too low
31 - Wastegate Solenoid is not connected, or has no power (which, is and does)
24 - Vehicle Speed Sensor (VSS) reading improperly
23 - Air Temperature Sensor (IAT or ATS) reading too low
22 - Throttle Positioning Sensor (TPS) reading too low
21 - Throttle Position Sensor (TPS) reading too high
15 - Coolant Temp Sensor reading too low
It also threw a code before ( not on this run) for "O2 Sensor reading too slow"
This thing was partially built and tuned at Anderson's with 435hp/590tq at the wheels with just some bolt ons and a methanol kit. Has been 11.79 @ 116 mph leaving easy due to stock axles. I hate to see it run like this. Need to figure this one out "out of shop" as I'm "out of dough". Thanks again for any help.
Thanks.
What the hell, here are the codes as per the Powerlogger:
34 - Mass AirFlow Sensor (MAF) reading too low
31 - Wastegate Solenoid is not connected, or has no power (which, is and does)
24 - Vehicle Speed Sensor (VSS) reading improperly
23 - Air Temperature Sensor (IAT or ATS) reading too low
22 - Throttle Positioning Sensor (TPS) reading too low
21 - Throttle Position Sensor (TPS) reading too high
15 - Coolant Temp Sensor reading too low
It also threw a code before ( not on this run) for "O2 Sensor reading too slow"
This thing was partially built and tuned at Anderson's with 435hp/590tq at the wheels with just some bolt ons and a methanol kit. Has been 11.79 @ 116 mph leaving easy due to stock axles. I hate to see it run like this. Need to figure this one out "out of shop" as I'm "out of dough". Thanks again for any help.