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98 7.4 rough idle and stumble.

No she starts up immediately every time.
- FlyByWire
- Post #9
- Feb 24, 2022
- Forum: Engine Performance + Maintenance
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98 7.4 rough idle and stumble.

So I said I wasn’t going to throw parts at the truck, but I did it anyway. The EGR symptoms really sounded like my truck, so I threw a new one one, same issue. It threw a check engine light (it’s come and gone before, and I don’t have a scanner so I swung by Autozone and they pulled the code for...
- FlyByWire
- Post #7
- Feb 24, 2022
- Forum: Engine Performance + Maintenance
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98 7.4 rough idle and stumble.

Yeah I get it on the exhaust, I didn’t build the truck and I don’t like it this way, as I have my kids in it all the time. It’ll be fixed soon. Thanks for the replies so far guys!! I never thought of the EGR valve, but the symptoms I’m reading about seem like it very much could be that.
- FlyByWire
- Post #6
- Feb 17, 2022
- Forum: Engine Performance + Maintenance
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98 7.4 rough idle and stumble.

Hey there guys. I’ve searched both the forum and some FB groups I’m in, and I’m probably more confused than when I started. I have a 98 GMC 2500 w/ a 7.4. Not always, but sometimes it develops a rough idle (as if it’s got a lopey cam), and sometimes it sputters / stumbles from a dead stop. Not...
- FlyByWire
- Thread
- Feb 16, 2022
- Replies: 8
- Forum: Engine Performance + Maintenance
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Gmt400 parts

Looking for the upper and lower steering column cover for a 98.
- FlyByWire
- Post #247
- Feb 13, 2022
- Forum: For Sale