my cruise controll was working fine,then the other day i was cruising at 75mph and it started surging like it was bleeding off a lil vacuum or something,,,, it would drop to about 72, then back to 75 and so on......... oh, 88 2.8mpfi 5 speed... what's up with this thing???

 

Ya know what! im intrested in this topic., I dont have cruz controll but i realy am intrested.,i wonder how they even did that with a 5 speed manual?? im used to the auto's with the C/C,.

I would think with c/c that at some point the trans would need to sift up and down as it was going up or down hills,,.this is something i have not got into yet.,but am very intrested,.

Ill give ya my 2 cents anyway [lol] asuming the c/c is electronic.,perhaps some where it is shorting out

 

well, the switch is ok, i adjusted the switch on the clutch , and gave a 1/4 turn on the bleed valve on the brake,,, it still wanted to work like a check valve,(releasing intermittened bursts of psi)so, i just turned it back off..... about a month ago i got a speed sensor code, so i checked it out, cleared the codes and it never came back, but mabey it has something to do with it.... any more sugestions from anybody would be appreciated....