1993 GMC 1500 Stutters and RPM's Jump
iamthepolarbear
02-08-2008, 01:46 PM
Greetings!
1993 GMC 1500 4x4 Ext. Cab, 5.7 V8, 78,000 on it. It started a week or so ago, that whenever I am going uphill, the RPM's gauge jumps up and down approxiamatly 200 rpms. I cannot hear or feel a difference in the actual engine, but it show it none the less. Also, while going up hill, it stutters for half a second. The occurance seems to be random, and it almost feels like you are hitting a pot hole. There is no warning light on the gauges, and I will be hooking it up to and OBD reader soon to see if it comes up. FYI, I did a complete tune up about 5,ooo miles ago and also replaced the fuel filter and fuel pump. So any ideas?
1993 GMC 1500 4x4 Ext. Cab, 5.7 V8, 78,000 on it. It started a week or so ago, that whenever I am going uphill, the RPM's gauge jumps up and down approxiamatly 200 rpms. I cannot hear or feel a difference in the actual engine, but it show it none the less. Also, while going up hill, it stutters for half a second. The occurance seems to be random, and it almost feels like you are hitting a pot hole. There is no warning light on the gauges, and I will be hooking it up to and OBD reader soon to see if it comes up. FYI, I did a complete tune up about 5,ooo miles ago and also replaced the fuel filter and fuel pump. So any ideas?
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