My CEL randomly turned on yesterday. Out of nowhere my car went from a smooth ride to feeling pretty rough and shaking a little. It lasted for a little over five seconds before it began to run smoothly again. I've also noticed that occasionally, and I do mean very occasionally, the car will have a somewhat rough idle where the engine will rev itself a bit. I'm assuming these two things are connected. The last time I changed my spark plugs (about three months back) I noticed some coolant in one of the holes - probably the intake manifold? Now a Google search shows that P1151 is linked with the 02 sensor, only thing is they look to be a-ok. Is it possible the Intake Manifold may be somehow linked to this error code? I'm driving a '98 Mustang GT.

 

random???
check out http://www.paladinmicro.com/pmicro.php# and look up 1130 for possible causes.