all things ECU Engine Control Unit
#12
11-26-2014, 10:02 PM
Thanks.
I drove it around today and the throttle response is much different. Feels like I took 750 Lbs out of the Van.
The exhaust smells different too. Cleaner, if that is possible and not just a placebo effect.
I think the sensors, like map sensor and throttle position sensor were not being fed a true 5 volts due to a weak connection, and the return signal was not representative of actual throttle position or manifold vacuum. I did get a seldom Map sensor and TPS sensor code on a recent 1750 mile roadtrip.
Or perhaps it was in a 'limp home' mode and using preset values due to the bad connection/connector, and if so, it was in this limp home mode for 8 years, and still passed smog tests.
I could detect no more actual power at full throttle, it just required less throttle input to achieve the same acceleration as before. 15 to 20% in my estimation, and this makes it feel a whole lot more powerful and more like a modern vehicle.
I drove it around today and the throttle response is much different. Feels like I took 750 Lbs out of the Van.
The exhaust smells different too. Cleaner, if that is possible and not just a placebo effect.
I think the sensors, like map sensor and throttle position sensor were not being fed a true 5 volts due to a weak connection, and the return signal was not representative of actual throttle position or manifold vacuum. I did get a seldom Map sensor and TPS sensor code on a recent 1750 mile roadtrip.
Or perhaps it was in a 'limp home' mode and using preset values due to the bad connection/connector, and if so, it was in this limp home mode for 8 years, and still passed smog tests.
I could detect no more actual power at full throttle, it just required less throttle input to achieve the same acceleration as before. 15 to 20% in my estimation, and this makes it feel a whole lot more powerful and more like a modern vehicle.
#13
11-29-2014, 02:34 AM
Gotta love technology. Instead of just having an engine that can run forever, they have to go ahead and add a computer that can ruin and disable the entire vehicle when it breaks. Good going people, you've just evolved us into stupidity in the name of progress.
Last edited by Tommy555; 11-29-2014 at 02:41 AM.
#14
11-29-2014, 10:43 AM
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Join Date: Nov 2014
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Performance ECU for my Magnum RC set me back 3 bills & change from Summit, AND... you hafta run premium gas with it thereafter, BUT... it will allow me to run a hotter/performance setup, that the old ECU would not.
When I get the new heads, lifters, cam, and throttlebody for it this spring, I'll get it installed, and let you know how it performs.
When I get the new heads, lifters, cam, and throttlebody for it this spring, I'll get it installed, and let you know how it performs.
#15
01-12-2015, 12:57 AM
All same symptoms. I finnally tried something that worked! I took the ecu out of the van cause it was of corse not starting cause below freezing. Put on my heat vents in my house. After some hours I put the ecu bak in van quickly and turned my keys and it started right up.... so for now I bring it in w me at night..lol ps disconnect neg terminal before removal and replaceing... hope it wrks for u. I finnaly know it is def my ecu failing in the cold. HEAT IT N RUN IT.PEACE
