opened up fuel pump ecu
#19
Instructor
iTrader: (2)
The large one is 820uf 50v, the small one is 47uf 50v.
I have been having an issue where the car wont start when it is completely dead cold and cooler than about 80deg. If I unplug the maf, bump the key, it tries to fir.e Plug it back in it then fires up but idles rough as crap till warm, then I can drive it and shut it off and back on without issue. In the afternoon when it is 90deg+ out and the car has been sitting for hours, it starts fine, but idles rough till warmed up. I figured bad ECT, changed it, same issue. Then for giggles I tried jumping the B+ and Fp pins in the check connector with the key in the on position. I heard fuel in the rail, then I tried starting it and it fired right up. So, this led me to believe it is an issue with the Fuel pump ecu, pulled mine out after finding your thread, and the small cap on mine had leaked all the fluid out and one of the legs was rusty, the large one is fine. I had a 47uf 35v cap here, soldiered it in and put the ecu back. It fired right up but the real test wont be until in the morning when I leave for work.
I have been having an issue where the car wont start when it is completely dead cold and cooler than about 80deg. If I unplug the maf, bump the key, it tries to fir.e Plug it back in it then fires up but idles rough as crap till warm, then I can drive it and shut it off and back on without issue. In the afternoon when it is 90deg+ out and the car has been sitting for hours, it starts fine, but idles rough till warmed up. I figured bad ECT, changed it, same issue. Then for giggles I tried jumping the B+ and Fp pins in the check connector with the key in the on position. I heard fuel in the rail, then I tried starting it and it fired right up. So, this led me to believe it is an issue with the Fuel pump ecu, pulled mine out after finding your thread, and the small cap on mine had leaked all the fluid out and one of the legs was rusty, the large one is fine. I had a 47uf 35v cap here, soldiered it in and put the ecu back. It fired right up but the real test wont be until in the morning when I leave for work.
So did this end up working out? My car will not turn the fuel pump on after its been running and stopped. You have to turn it over multiple times before I hear the pump kick on again then it will start. I am thinking this is it...
#20
The fuel pump ecu works fine. My cold start issue turned out to be something else. Coil is jumping to the hood blanket when there is a lot of condensation in the blanket. I fixed it by placing a piece of foam over the coil/wire connection. I lined the foam with electrical tape. Basically, I need a new hood blanket as mine is sagging.
#21
Lead Lap
iTrader: (8)
It would be easier to just remove the hood blanket (or get new clips) if it's sagging that bad. It kinda sorta has some noise suppression and fire retarding qualities, but not much consensus on either. Even the fire/emergency professionals say the latter is more myth than reality, from what I've read.
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