Poor mileage
09-12-2003, 09:54 PM
#1
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Thread Starter
Join Date: Jul 2003
Posts: 216
Poor mileage
1990 GXE, 90,000 mi, auto. Getting about 18mpg. Dads car. He said it used to be better before.
Engine smooth idle, good accelaration, trans not sliping, tire pressure good, plugs new, wires good, air filter new, compression 135psi all clys, no vacuum leaks, no exaust leaks, no codes from the computer, clean throttle body.
Any ideas on what else I could check????
Engine smooth idle, good accelaration, trans not sliping, tire pressure good, plugs new, wires good, air filter new, compression 135psi all clys, no vacuum leaks, no exaust leaks, no codes from the computer, clean throttle body.
Any ideas on what else I could check????
09-13-2003, 09:48 AM
#2
Originally Posted by abunai
1990 GXE, 90,000 mi, auto. Getting about 18mpg. Dads car. He said it used to be better before.
Engine smooth idle, good accelaration, trans not sliping, tire pressure good, plugs new, wires good, air filter new, compression 135psi all clys, no vacuum leaks, no exaust leaks, no codes from the computer, clean throttle body.
Any ideas on what else I could check????
Engine smooth idle, good accelaration, trans not sliping, tire pressure good, plugs new, wires good, air filter new, compression 135psi all clys, no vacuum leaks, no exaust leaks, no codes from the computer, clean throttle body.
Any ideas on what else I could check????
09-13-2003, 09:53 AM
#3
Originally Posted by bvtran
your o2 sensor might be getting fouled. Just grab a new Bosch O2 and stick it in. Not to mentioned, stop using crabby brands when it comes maintaining your car. Make sure you're using NGK only spark plugs, and NOT Sh$tfires from bigK.
ROFL $hitfires
09-13-2003, 01:44 PM
#5
www.nissanpartstore.com
$60 and you only needed one O2
$60 and you only needed one O2
Originally Posted by abunai
Was going to change the O2 next. $100 for a new one here. Using ND plugs. Can't find NGK.
Anyone know how to install a heated O2????
Anyone know how to install a heated O2????
11-06-2003, 04:45 PM
#9
Senior Member
Join Date: Sep 2001
Posts: 381
what's his driving pattern like? has it recently changed becasue even a little more traffic or city driving can make a big difference.
have you done some gas cleaner and an oil change? probably won't help, but I usually do the cheap stuff before the $100 02 sensor (man, I didn't think prices in hawaii would be that expensive).
have you done some gas cleaner and an oil change? probably won't help, but I usually do the cheap stuff before the $100 02 sensor (man, I didn't think prices in hawaii would be that expensive).
11-06-2003, 06:00 PM
#10
Senior Member
Join Date: Dec 2002
Posts: 438
Originally Posted by abunai
Was going to change the O2 next. $100 for a new one here. Using ND plugs. Can't find NGK.
Anyone know how to install a heated O2????
Anyone know how to install a heated O2????
Oxygen Sensor
Qty: 1
Price: $59.00
Part #: C5010-58305
Sub Total: 59
Shipping: 0.00
Tax: 0
Core: 0
Total: 59
11-06-2003, 08:13 PM
#12
Originally Posted by BensMax93
i only get 16-17 mpg 
. how often does the o2 sensor need to be replaced? I think I still have the original one in the max.
. how often does the o2 sensor need to be replaced? I think I still have the original one in the max.
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