Question about Infiniti Q45

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I have a 1991 infinty Q45 starts right up no error codes nothing on obd 1 computer, or dash readout runs good has 188801 on the odometer just so you know. When i acelerate it feels like a manaul transmision about to stall but not quite, that little shake they do up till 25 mph shifts smooth this is in drive but if i put it in 3 no overdrive i dont notice it, it accrelerates slow as well, hoping its not the tranny let me know thanks

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Hi my name is Ray

No errors as of yet. normally is an indication of a fuel filter or fuel pump going out
the ECM does not monitor those 2 omnly that they are running rich or lean. At this point I would try changing the fuel filter first if it ends up being the pump you would have to normally change the fuel filter anyways. You may end up with a P0171 Fuel System Lean, Bank 1 you can see the codes here

you may also try clening the air intake with carberator cleaner. this is where the TPS and anitknock snesor are located. sometimes dust gets on these sensors causing the sensor to misread. The misread is sent to the control module causing the car to run rough or even stall...

you can email me at

please let me know

Posted on Jul 11, 2009


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Posted on Jan 02, 2017


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I hope help you woth this. Good luck (rated this).

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If you do not have the original info that came with the readout, you may have to go to the tool manufacturer's website.

The entry P0032 on my Centech OBD II yields this:

"HO2S Heater Circuit High Voltage Bank 1 Sensor 1"

That doesn't make muchsense to me in view of your symptoms but maybe it will help.

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