1995 GMC Safari no power on accelleration (well maintained)

Tiny
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
Tuesday, March 29th, 2011 AT 11:03 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the exhaust system for restriction could be a clogged catalytic converter start here
Was this
answer
helpful?
Yes
No
-1
Tuesday, March 29th, 2011 AT 11:11 PM
Tiny
BILL49203
  • MEMBER
  • 15 POSTS
No cat?
Was this
answer
helpful?
Yes
No
Tuesday, March 29th, 2011 AT 11:18 PM
Tiny
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.
Was this
answer
helpful?
Yes
No
Wednesday, March 30th, 2011 AT 12:25 AM

Please login or register to post a reply.

Related Engine Low Power Content

Fix an Engine with Low Power!
VIDEO
Fix an Engine with Low Power!
Instructional repair video
Symptoms of Low Engine Power
GUIDE
Symptoms of Low Engine Power
The power your car's engine is producing is important. When you step on the gas you need your car to accelerate, mainly to keep you out of trouble when getting onto the...
VIEW MORE