brandondill
New member
I just bought a 98.5 auto 4x4 with ex cab. Its all stock except it had a 3" straight pipe into a 4" straight pipe and it had a edge on it. With the edge turned up to 4 and going up a hill if you were at 2000 rpms and 70 mph the entire truck started to shake. I let off and did it again and the same thing happened. Then I turned off the programmer and it stopped immediately. Well I took out the edge and installed the quad w/adr and pv2 for gauges and plus I didnt like the edge. When this happens with my quad turned on my fuel pressure is about 3 psi. I could understand it would be fuel causing this my pressure was at 0 psi and the pump was drained, but it does it at different times also. Almost seems like it is hunting for the proper gear. It will jump between 3rd and 4th sometimes and it seems like this is when it starts to shake but Im not sure.
