[sawdust123]

I mentioned this in another thread but thought that a new thread may be in order now that a solution may be at hand.

Here is a rundown of my issues.

Several weeks ago the MIL comes on (in the 2003 GT) with two codes coming up (Cam and Crank sensors). Car runs but with less power and occasional misfiring. Both position sensors were replaced.

A few weeks later just the p0344 code comes up. Mechanic can't find anything, resets the computer. I drive ~1000 more miles with no problem. Pulling out of the driveway on Saturday the MIL comes on again with p0344 code. I delete the code and drive about 200 more miles with no problem. Yesterday the code comes on again. I try reseting it one more time but this only lasts about a quarter mile. Goody! My intermittent problem may no longer intermittent. Maybe we can fix this sucker once and for all.

My mechanic has been pouring over the wiring for several hours since yesterday. Now he seem pretty sure the problem is actually in the MAP sensor. Apparently a short in that sensor will cause other sensors to give bogus readings. I haven't seen diagnosis before but he seems fairly confident in it. I am certainly looking forward to having a working vehicle agian.

BTW, I picked up the Can-Tech OBD reader/EOBD scanner tool from Harbor Freight (item 98614). What a great tool! It doesn't just give you the codes, it explains what they mean. It also gives you great prompts. For instance, the first time I used it, I accidently turned the key in accessory mode, not ignition mode. After a few seconds, it told me to verify the key position. It is so refreshing to find a device with a friendly UI.