98EJ7Y8

what do you guys think about putting a toggle switch on the fuel pump .. cant seem to get power to the pump

MRGRIM

iTrader: (1)

have a look at your fuses
try to get a multy meter at the pump see if you have 12v

98EJ7Y8

i checked the relay and its good .. jumped the pump and car started right up .. but when i use the key to try the pump its a no go .. could it be i need the obd2 to obd1 jumper harness ?? or something else

Former User

The main relay is a safety device. Don't bypass the relay. Fix the problem.

sc440

What motor what ecu? Have you checked cel's,if you have a solid cel could be ecu.

98EJ7Y8

i dont plan on bypassing .. never thought of it once... and i have a mini-me d16y7 with a d16y8 head, harness and all y8 sensors .. i am running a p2p ecu .. currently waiting on a obd1 chipped ecu .. the relay is good the pump is good .. just cant seem to get power to the pump .. i checked the fuse in the box next to the pedals but everything seems to be good .. i thought it was the ecu at first but was told from many of different people that it wouldnt be the ecu no matter what .. but the ecu is where im at now

sc440

Check power at map sensor with key on run,should be 5 volts,if its less or none its ecu.

Former User

The ECU controls when the fuel pump primes by providing ground to the main relay. Check whether this ground wire is good.

sc440

Ground at thermostat

Former User

Ultimately yes, but if the thermostat ground were bad, the engine would lack both spark and fuel. The OP needs to check the fuel control wire running between the main relay and ECU.

98EJ7Y8

thanks ronj@ht .. and on the other hand .. how hard would it be to put a toggle switch with a fuse in the correct way ?? really dont plan on doing this but just wondering if its a possibility if this is the way i have to go

98EJ7Y8

thanks again ronj@ht
so far youve provided me with the best answers and they are understandable also

98EJ7Y8

and thats not the case at all cause i got spark just cant get the pump to power with the key .. when the pump is jumped with a 12v power source .. the car runs

sc440

I had same issue. Have you checked the check engine light codes? Is the cel solid or does it blink a solid cel indactes bad ecu,also checking for proper voltage at map when key is on run postion is a easy way to check if ecu is good should be 5 volts if there is not yor ecu is bad. Mine had 2.4 volts

98EJ7Y8

how did u end up fixing the problem??? .. and im waiting on a new ecu (chipped p28 ecu with deleted o2 sensors ) dont know what else to do .. everything is good ( basically brand new )

sc440

Ecu was bad,i had another chipped ecu it fixed the problem search on here i think ALLMOTOR had a similar issue with his.

98EJ7Y8

thanks hopefully i get this ecu and it fixes everything

delsol1225

did you fix the problem?
i have the same problem on my car.