Diagnostics

JOANN682004

MEMBER
1998 BUICK LESABRE
6 CYL
2WD
AUTOMATIC
39,000 MILES

I have a 98 Buick lasabre, for about a year now it dies while I am driving usually when I break or am at a stop and surges bad. I did run diagnostics on it and got a code of P0102 I am suspicious of the mass air flow intake. What are the normal ohm's it should read when I test it?

Jo ann

1 Reply

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

Hello,

A code P0102 may mean that one or more of the following has happened:

The MAF may be disconnected, or a wiring connection may be bad
The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate the MAF).
The MAF sensor may be faulty
The vehicle computer may be faulty (very rare)

The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:

Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
Inspect for any air leaks near the MAF sensor.
Take the MAF out and clean it using MAF Sensor Cleaner. Be gentle with the sensor.
Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
Replace the MAF sensor.

I cannot find what the ohms are supposed to be. The only thing I can find is that the Voltage between the Signal Pin and Ground should be 5 volts. And if voltage is off then would need to check for open or short between the PCM and the MAF.

One thing you can try is disconnect the MAF and start the vehicle and drive for a while to see what happens. What this does is set the MAF into a Default Mode so the vehicle will run if diffective.