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Old 01-30-2020, 03:15 AM   #1
xxronzombiexx
 
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Default Issues with engine running / surging

Hello wondering if anyone can help point me in the right direction on my 97 d21
Iím having issues with the truck at idle itís rpms fluctuate and while Iím driving down the highway and barely let off the gas the truck jerks / surges

It also has been getting horrible fuel mileage do to it flooding its self, it is running rich

So far I have replaced the following

Oem Nissan tps sensor
Distributor cab, and rotor
Spark plug / wires
Mass air flow sensor
Both o2 sensors
Fuel pump
Fuel filter

I have spent quite a bit of money doing all this and cannot seem to figure out what it is yet

Any help would be greatly appreciated
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Old 01-30-2020, 03:22 AM   #2
cadillacdude1975
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Check http://www.infamousnissan.com/forum/...ad.php?t=25332
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Old 01-31-2020, 05:36 PM   #3
xxronzombiexx
 
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Last night i was checking wires and connections, managed to tap on the fuel pressure regulator ! and truck started acting even more funky! Well i pulled off the vacuum hose to the fuel pressure regulator and fuel sprayed everywhere. Went to auto zone and bought another for $100 and so far so good! I will keep updated
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Old 02-01-2020, 02:46 AM   #4
cadillacdude1975
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Maybe you exorcised the demon lol

Good luck.
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