No engine light, shakes, smells bad
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No engine light, shakes, smells bad
I drive a 2004 f350 with 120,000 mile on it. When I got off work today and started it up I noticed it was kinda idling rough which it's never done. As I pulled away the truck began to shake but I have check engine light. When I got home, I got out and could smell sulfur. What could it be? I was thinking bad cat but I don't think that would cause the shaking, would it? Or maybe bad plugs but then wouldn't my truck through a code? Please let me know what you think ASAP, this is my daily and I have work in the morning.
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Joined: Jun 2009
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From: Fort Smith, Arkansas
I drive a 2004 f350 with 120,000 mile on it. When I got off work today and started it up I noticed it was kinda idling rough which it's never done. As I pulled away the truck began to shake but I have check engine light. When I got home, I got out and could smell sulfur. What could it be? I was thinking bad cat but I don't think that would cause the shaking, would it? Or maybe bad plugs but then wouldn't my truck through a code? Please let me know what you think ASAP, this is my daily and I have work in the morning.
Hotshot
Joined: Jan 2004
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From: St Louis
Probably a common misfire.
If the truck is an OBD1 calibration, it's ability to self-diagnose is limited and it may not set any codes unless the misfire is very severe. You'd have to go in and look at individual cylinder misfire counts with a scan tool to see which cylinder(s) is the source of the problem.
If the truck is an OBD1 calibration, it's ability to self-diagnose is limited and it may not set any codes unless the misfire is very severe. You'd have to go in and look at individual cylinder misfire counts with a scan tool to see which cylinder(s) is the source of the problem.
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Fixed
I meant to say it has no check engine light. It ended up being a bad spark plug... well actually they were all pretty bad. Problem solved. I guess my dad didn't do much maintenance on the truck before I bought it.
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From: Fort Smith, Arkansas
Read this before you try to diagnose it any more:
https://www.ford-trucks.com/forums/5...t-come-on.html
Hotshot
Joined: Jan 2004
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From: St Louis
It's also a characteristic of a cat that cannot handle the load of raw fuel that is being dumped into it by a misfiring cylinder. Of course, if the misfire is left unrepaired, the cat will be permanently damaged.
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From: Long Island USA
Any catalytic converter will generate sulfur when it's converting. Get behind an Ecoboost when the driver is on the go-pedal for more than 2 seconds 
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