- Tue Dec 16, 2014 10:11 pm
#350412
Like the title says, my car is picking and choosing when it wants to prime the fuel pump on start, and I've been having an idle issue as well. Some details about my car - I just got it about 2 months ago.
Red 92 eg hatch 5 speed with a d16z6 swap
Things I've done/replaced:
-fuel pump, main relay
-NGK spark plugs(gap@.044) and NGK blue wires
-distributor cap(leaking a tiny bit of oil even with new gasket)
-cleaned thermostat house ground, new battery terminals and ground
-replaced/cleaned trans to chassis ground, valve cover to chassis ground
-new coolant(flushed and air bled), thicker all-aluminum radiator w/cap
-thermostat, ect sensor, iac valve, pcv valve
-all mentioned grounds that I've done are clean and hitting bare metal
-removed evap container + plugged vac lines on IM
-removed vac control solenoid, basically did a vacuum delete to get rid of all the vac lines so I could see if the idle issue was a possible vac leak
-throttle body gasket, air filter, cheapo SRI from oreilly's
-cleaned FITV and TB, didn't replace
Trying to think of more but i'll just post for now and edit if I need to.
I checked voltage to the fuel pump just about an hour ago, and the voltage went from 0v, 4v, 8v, 12v progressively over a second or two. Isn't it supposed to be an instant 12v connection as soon as the ignition is switched on? Also, checked the main relay with a voltage light and one of the connections yeilded a very dim light (can't remember which one but I can look if needed, assuming it's not normal). Once I get the car started, 9.8 times out of 10 it doesn't have to wait to prime again until the car is cold(very rare that it won't prime when warm).
After I get the car on though, is when my idle issue comes up. I've replaced quite a bit as you can see, and the issue is almost gone... but after buying a new iacv for $180.00 I'm a little upset that the problem isn't completely gone now. It only seems to idle surge (up and down between 300-600) when the car is up to operating temp, so I guess my fitv is fine. I was thinking maybe my fuel pump isn't grounded out right, causing it to not get a constant stream of fuel when I'm idling, or maybe my ecu is going out. I can also hear the fuel pump whine alternate when I turn my blinkers on. Based on this information, does anyone on the forum have anything they think could be the solution?
Red 92 eg hatch 5 speed with a d16z6 swap
Things I've done/replaced:
-fuel pump, main relay
-NGK spark plugs(gap@.044) and NGK blue wires
-distributor cap(leaking a tiny bit of oil even with new gasket)
-cleaned thermostat house ground, new battery terminals and ground
-replaced/cleaned trans to chassis ground, valve cover to chassis ground
-new coolant(flushed and air bled), thicker all-aluminum radiator w/cap
-thermostat, ect sensor, iac valve, pcv valve
-all mentioned grounds that I've done are clean and hitting bare metal
-removed evap container + plugged vac lines on IM
-removed vac control solenoid, basically did a vacuum delete to get rid of all the vac lines so I could see if the idle issue was a possible vac leak
-throttle body gasket, air filter, cheapo SRI from oreilly's
-cleaned FITV and TB, didn't replace
Trying to think of more but i'll just post for now and edit if I need to.
I checked voltage to the fuel pump just about an hour ago, and the voltage went from 0v, 4v, 8v, 12v progressively over a second or two. Isn't it supposed to be an instant 12v connection as soon as the ignition is switched on? Also, checked the main relay with a voltage light and one of the connections yeilded a very dim light (can't remember which one but I can look if needed, assuming it's not normal). Once I get the car started, 9.8 times out of 10 it doesn't have to wait to prime again until the car is cold(very rare that it won't prime when warm).
After I get the car on though, is when my idle issue comes up. I've replaced quite a bit as you can see, and the issue is almost gone... but after buying a new iacv for $180.00 I'm a little upset that the problem isn't completely gone now. It only seems to idle surge (up and down between 300-600) when the car is up to operating temp, so I guess my fitv is fine. I was thinking maybe my fuel pump isn't grounded out right, causing it to not get a constant stream of fuel when I'm idling, or maybe my ecu is going out. I can also hear the fuel pump whine alternate when I turn my blinkers on. Based on this information, does anyone on the forum have anything they think could be the solution?
