Thread: Weird problem after DW200 fuel pump install

here's how to wire the relay.

Weak Positive Output to High Current Positive Output

I did guys, thank you... i used a relay and fuse.

I´m now getting to the conclusion that maybe i messed up when i passed the wires to the back of the car, maybe i have shorted to the chassis without realising and burned something, maybe the ECU or SAFC2. Is this possible? I now it has a fuse prior, but it´s not blown.

Also i´m afraid of washing the bores and put gasoline in the oil, since is soo damn rich, i have to find the cause fast.

Post pics of how you installed the FPR. Have you tried putting the stock FPR back in and taking out aftermarket since you went back to stock pump?

what does the fuel pressure peak at when the pump is priming?

Well guys, i´m just a dumbfuck...

The MAF was the problem, i have a small ground distributor block(made for multiple audio amplifiers) that i use on the engine bay for multiple grounds, like distributor, electronics, head and block reinforcment and a reground to the MAF, well after installing the ground for the fuel pump stupid me forgot to put in the MAF wire.

The MAF being ungrounded made the ECU and SAFC2 see 100% flow, full voltage and as so, the injectors were wide open even cranking.

Thx for all your help guys and sorry for that.

Out of curiosty i picked up 2 more psi of fuel pressure over stock FP on stock fpr, with vac, and no VAC, when you use the hardwire install kit i picked another (single) psi, and i´m also using a 300zx TT fuel filter.

Probably a bad fuel pump, DW makes the worst shit on the market. Dealt with their crap for 6 years and it is garbage.

Did you even read? No, not a bad pump, it was my error.

I´ve read quite alot before buying(fuel pump comparisons) don´t know about other products, but have read good things about the DW200, it´s quitter then the wallbro, and there are no counterfits like the Walbro´s, you never know if your being the real deal. Let´s see if i´m one of the happy ones, or unhappy like you.

Thx again for everyone that tried to help.

I don't know how to read.

You do... but you just read the title... don´t be this way...

By the way what DW parts went wrong? fuel pump?