car dies, cycle ignition, its ok?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

screaming6 · 02-23-2012, 08:33 PM

I drive like 3 hrs to in my 93 ka s13 everything is perfect.

on the way back (with gas) on the highway the car starts to lose speed/rpm slowly and will not accelerate. Until it coasts and completly dies. Try and start it back up and drives for like 5 minutes perfect and dies again..turn it on and its fine drives 5 minutes then dies..etc. Etc.

I can now (while I feel it dying at any speed) ;shut the ignition off for like 2 seconds and back on and keep driving and keep doing that continuosly....wtf!!!

my completely random assumption is fuel pump primes...sends fuel...then loses signal causing car to die so when I shut off ignition and back on it gets more fuel allowing car to drive for a bit again until it stops sending fuel....yay or nay.

has a 3 month old distributor plugs and wires if it makes a difference

screaming6 · 02-25-2012, 12:07 AM

anyone out there?

heychris · 02-25-2012, 12:29 AM

Fuel pump, fuel filters.

I would also start looking for electrical shorts, especially to the fuel pump

Good luck
Ch

Sent from my DROID RAZR

cmg · 02-28-2012, 08:09 PM

Hard wire the fuel pump or check fuel pressure while driving. Also can you get it to shut off at idle and not driving? That would make your diagnosis a lot easier from home.

screaming6 · 08-24-2012, 02:52 PM

back with the same problem

I rarely drive the car;

anyways I changed the fuel pump for a walbro and it drive beautifully for a few days . Starting about a week ago it runs fine for about 10 minutes and then the bogging until I cycle ignition then runs fine...for 3-4 minutes...then starts bogging..cycle ignition..runs 3-4 minutes...etc etc over and over.

new fuel pump and fuel filter

I soldered and bypassed the harness that goes to the fuel sending unit in the trunk
my closest guess..ecu is sending a bad signal then resets when I cycle ignition????
or
possibly the fuel sending unit has bad connectors inside?.? Bu

how could I hard wire the fuel pump to either isolate the problem...ecu vs. Sending unit?
12 volts and ground? Is that it or does the power fluctuate to determine how much fuel to send

how to test wire coming out of ecu to fuel pump???

oh yea everytime it starts bogging the fuel pump gets pretty loud..so I'm pretty sure its fuel related.

sorry for all the questions...

screaming6 · 08-25-2012, 08:19 AM

has this problem stumped Zilvia? Damn...

02-23-2012, 08:33 PM	#1
screaming6 Zilvia Member Join Date: Sep 2005 Location: coral springs Posts: 157 Trader Rating: (1) Feedback Score: 1 reviews	car dies, cycle ignition, its ok?? I drive like 3 hrs to in my 93 ka s13 everything is perfect. on the way back (with gas) on the highway the car starts to lose speed/rpm slowly and will not accelerate. Until it coasts and completly dies. Try and start it back up and drives for like 5 minutes perfect and dies again..turn it on and its fine drives 5 minutes then dies..etc. Etc. I can now (while I feel it dying at any speed) ;shut the ignition off for like 2 seconds and back on and keep driving and keep doing that continuosly....wtf!!! my completely random assumption is fuel pump primes...sends fuel...then loses signal causing car to die so when I shut off ignition and back on it gets more fuel allowing car to drive for a bit again until it stops sending fuel....yay or nay. has a 3 month old distributor plugs and wires if it makes a difference

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02-25-2012, 12:07 AM	#2
screaming6 Zilvia Member Join Date: Sep 2005 Location: coral springs Posts: 157 Trader Rating: (1) Feedback Score: 1 reviews	anyone out there?

02-25-2012, 12:29 AM	#3
heychris Zilvia Addict Join Date: Oct 2007 Location: SkiTown USA Posts: 760 Trader Rating: (20) Feedback Score: 20 reviews	Fuel pump, fuel filters. I would also start looking for electrical shorts, especially to the fuel pump Good luck Ch Sent from my DROID RAZR

02-28-2012, 08:09 PM	#4
cmg Zilvia Member Join Date: Aug 2011 Location: Florida Posts: 158 Trader Rating: (0) Feedback Score: 0 reviews	Hard wire the fuel pump or check fuel pressure while driving. Also can you get it to shut off at idle and not driving? That would make your diagnosis a lot easier from home.

08-24-2012, 02:52 PM	#5
screaming6 Zilvia Member Join Date: Sep 2005 Location: coral springs Posts: 157 Trader Rating: (1) Feedback Score: 1 reviews	back with the same problem I rarely drive the car; anyways I changed the fuel pump for a walbro and it drive beautifully for a few days . Starting about a week ago it runs fine for about 10 minutes and then the bogging until I cycle ignition then runs fine...for 3-4 minutes...then starts bogging..cycle ignition..runs 3-4 minutes...etc etc over and over. new fuel pump and fuel filter I soldered and bypassed the harness that goes to the fuel sending unit in the trunk my closest guess..ecu is sending a bad signal then resets when I cycle ignition???? or possibly the fuel sending unit has bad connectors inside?.? Bu how could I hard wire the fuel pump to either isolate the problem...ecu vs. Sending unit? 12 volts and ground? Is that it or does the power fluctuate to determine how much fuel to send how to test wire coming out of ecu to fuel pump??? oh yea everytime it starts bogging the fuel pump gets pretty loud..so I'm pretty sure its fuel related. sorry for all the questions...

08-25-2012, 08:19 AM	#6
screaming6 Zilvia Member Join Date: Sep 2005 Location: coral springs Posts: 157 Trader Rating: (1) Feedback Score: 1 reviews	has this problem stumped Zilvia? Damn...