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Vortec 5700 Ping after computer reset?
Hi, I have a 1998 GMC K2500 with the Vortec 5700. After putting some Summit Racing headers on my truck the engine will ping under anything but the gentlest throttle. I have never heard the truck ping before in my years of driving it, so I am confused why it would start now. The battery was...- 98gmc2dr
- Thread
- Replies: 17
- Forum: Engine Performance + Maintenance
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Engine Surging w/ AC on
Hello all, I have come across an issue with my truck (1998 K2500 Vortec 5700 4L80E). When stopped in Drive with the AC or defrost (since both run the compressor) the engine will surge. Sometimes it is not by much, other times it will go up to around 850 and try to move a bit. Last week it...- 98gmc2dr
- Thread
- Replies: 4
- Forum: Engine Performance + Maintenance
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Increased Cranking Time/Changed Cold Idle
Hi all, I have a 1998 GMC K2500 with the Vortec 5700 which the previous owner rebuilt about 65k miles ago. About a month ago I noticed that it took a bit longer to start than usual (typically less than a second even when cold), and today it was the worst -- it took about 3 seconds of cranking to...- 98gmc2dr
- Thread
- Replies: 9
- Forum: Engine Performance + Maintenance
