Wont stay running when cold start

ANDREWSHEAKLEY33

MEMBER
2002 FORD TAURUS
3.0L
6 CYL
2WD
AUTOMATIC
160,000 MILES

My wife's car wont stay running when cold start up. Did have code P1506 iac overspeed error. R+r icc sensor. Started running better for a few days but know back to what it was doing. Did tune up where there was misfire on cyl 1, 2, 3, 5. Keeps throwing P1131 and P1151 for o2. Sounds like a bad vacumm leak. Holds steady 19inlbs and sprayed brake cleaner and engine never idles up cold or hot. Was thinking intake gaskets but kinda ruled that out. Any ideas?

1 Reply

HMAC300

MECHANIC
48,601 POSTS

Here is of our tips page. Same thing for your car probably. Make sure to get new bolts.
If you get one of these vehicles in your shop with the MIL on and the following codes P0174 or P0171, P1131, P1151. Make sure and have a look at the Upper intake isolator bolts. If you are test driving the vehicle and are testing it while it is hot you are not likely to see any problem with the fuel trim or 02's. However fire it up cold and it should be quite obvious on the scanner and with a smoke machine. Make sure you replace all the isolator bolts with the new and improved ones (green new style / old style black). Also a good idea while you have it tore down to do the port seals and top seal on the intake