1995 GMC Safari no power on accelleration (well maintained)

BILL49203

MEMBER
1995 GMC SAFARI
6 CYL
2WD
AUTOMATIC
220 MILES

1995 gmc safari 4.3L 2 wheel drive at. Started losing power the other night, He could only dive it home at 10 mph. I replaced the fuel pump and filter. It idles. As it did before. But at times a little rough. I dont have a code reader, I believe its odb1 and I cant find one for that vehicle. If its obd 2 I can buy one. Its my grandfaters vehicle and it 2 hours away so im just looking for some guidance. Any will be appreciated. Thanks, Bill

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check the exhaust system for restriction could be a clogged catalytic converter start here

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Tuesday, March 29th, 2011 AT 11:11 PM

BILL49203

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15 POSTS

No cat?

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Tuesday, March 29th, 2011 AT 11:18 PM

RASMATAZ

MECHANIC
75,992 POSTS

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.

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Wednesday, March 30th, 2011 AT 12:25 AM