1999 Infiniti QX4

Asked by Marshall Mar 21, 2019 at 09:06 PM about the 1999 INFINITI QX4 4WD

Question type: Maintenance & Repair

Hey! So I have a 1999 Infiniti QX4. I recently
purchased vehicle with a 137.xxx miles on it. When
purchased I was told the fuel pump was bad and
would stall after driving for a short period of time
(2-3min). I replaced fuel pump then received a
check engine light for a “Fuel Temperture Sensor”.
I located the Sensor on the sending unit so I
replaced the sending unit. I was able to get it going
again but it would stall out shortly after. We noticed
that when you tap the “Throttle Position Sensor”
the car would start up again, so we decided to
replace that as well. The vehicle started right up
and was able to drive about 2.5 miles before
stalling once more. I was unable to get the vehicle
to turn back on so I decided to take it to an Infiniti
Dealership and have their service technicians take
a crack at it. The technicians first thought after
reviewing the vehicle was a bad distributer, but
after further testing he ruled that out. As of now
the vehicle is still being diagnosed and we have
yet to find an answer for the problem. I’m hoping
someone has seen this problem before and has
some knowledge that can help. Thanks You!

1 Answer

30

Have you found out what was happening? I have a 98 and am having the same exact issues. I've had the car for 5 years now and this all started about 6 months ago. Had the computer replaced, 6 months later started turning off when I'd come to a stop, replaced the distributor, about 3 weeks later it started cutting off again, and I'm literally sitting at the mechanic right now trying to figure this all out.

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