- #3420 of 3451
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Re: 65 mph Vibration [jimmyhater]
by johnss10
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Sep 28, 2009 (3:22 pm)
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Replying to: jimmyhater (Sep 28, 2009 8:15 am)
Can you tell if the vibration is felt in the steering wheel in addition to seeing it in the mirrors? If so, it would seem likely that it is tire/ bent wheel/hub related.
Also, is the vehicle in 2WD or 4WD at the time?If it's in 2WD, then the extra torque needed to go up hill is not being passed to the front drivetrain, so it's pretty unlikely that the front is the problem in that case.
Any further info?
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- #3421 of 3451
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Re: 65 mph Vibration [johnss10]
by jimmyhater
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Sep 28, 2009 (3:49 pm)
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Replying to: johnss10 (Sep 28, 2009 3:22 pm)
There is a slight vibration in the steering wheel. The vehicle vibrates whether it is in 2WD or 4WD, in gear or not in gear, over-drive or drive. I've had the tires replaced, both sets of tires were road-forced balanced. Technicians at both places said the balancer would pick up a bad rim; all rims are fine. To double-check it, I've replaced all four tires with my spare. It seems that the whole vehicle vibrates, but mostly at the doors and mirrors. The vehicle is so small, it's hard to detect a vibration in any one area.
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- #3422 of 3451
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1995 jimmy running rough
by jaba7530
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Sep 30, 2009 (4:43 pm)
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I have a 1995 jimmy 4.3 vortec that runs rough and the only code I get is for bank 1 sensor 1 o2 sensor. I have replaced both o2 sensors, plugs,wires,cap and rotor, map sensor,tps sensor, fuel pump and spider injector but still runs rough. It seems ok when you first start it and when driving it will spit and sputter like it is running out of gas until you punch it and the it will go for a few minutes and then it starts running rough again. Also a couple of times it would crank excessivly before it started and it seems to be running extremly rich. Can anyone please help,I have about had it.
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- #3423 of 3451
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Re: 1995 jimmy running rough [jaba7530]
by jimmyhater
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Sep 30, 2009 (6:36 pm)
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Replying to: jaba7530 (Sep 30, 2009 4:43 pm)
I had a similar issue. The vehicle would start, but you would have to downshift once the vehicle was warm and it shifted into over-drive (in the 30 mphs). I had to floor it to get it to 55, and it continually lost power. I tried cleaning the intake air sensor with throttle-body cleaner, but didn't notice any difference. I found a problem in the O2 sensor behind the catalyic converter. It looked like water got inside the connection and caused corrosion. I cleaned the connectors for the 02 sensor before and after the catalyic converter and replaced both 02 sensors. However, I never received an engine code as you mention. This fixed the issue. ...I replaced the catalyic converter at the same time since it was rattling, but it had nothing to do with the issue.
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- #3424 of 3451
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Re: 1995 jimmy running rough [jimmyhater]
by jaba7530
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Oct 01, 2009 (5:09 am)
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Replying to: jimmyhater (Sep 30, 2009 6:36 pm)
I have replaced both of the sensors and cleaned the connections and put dielectric grease in connectors but no luck
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- #3425 of 3451
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Re: 1995 jimmy running rough [jaba7530]
by jimmyhater
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Oct 01, 2009 (5:28 am)
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Replying to: jaba7530 (Oct 01, 2009 5:09 am)
If the 95 is like the 96, then I believe you have 4-02 sensors. I would be sure to check all sensors and use a multimeter to ensure you have voltage at each connection. You might have a broken connection somewhere in the wiring.
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- #3426 of 3451
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Re: 1995 jimmy running rough [jimmyhater]
by jaba7530
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Oct 01, 2009 (5:36 am)
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Replying to: jimmyhater (Oct 01, 2009 5:28 am)
The 95 only has 2 sensors one before and one after the cat.
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- #3427 of 3451
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Re: 1995 jimmy running rough [jaba7530]
by jimmyhater
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Oct 01, 2009 (5:58 am)
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Replying to: jaba7530 (Oct 01, 2009 5:36 am)
You might also check your coolant temp sensor.
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- #3428 of 3451
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Re: 1995 jimmy running rough [jimmyhater]
by jlflemmons
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Oct 01, 2009 (6:35 am)
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Replying to: jimmyhater (Oct 01, 2009 5:58 am)
Spider assembly, and fuel pressure regulator can both cause these problems. I know that in '99-'00 GM was having to replace a lot of regulators because they would leak, making the car hard to start and run rich.
I haven't pulled one of these apart to look at, but I know several here on the boards have.
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- #3429 of 3451
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Re: 1995 jimmy running rough [jimmyhater]
by jaba7530
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Oct 01, 2009 (2:22 pm)
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Replying to: jimmyhater (Oct 01, 2009 5:58 am)
I replaced the temp sensor and idle air but still no luck and now I am getting code 300 for random cylinder misfire
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