Intermittent stalling

TRENT PILGRIM

MEMBER
2007 CHRYSLER ASPEN
4.7L
V8
2WD
AUTOMATIC
128,067 MILES

Car stalls at interstate speeds, can shift to neutral and it fires up with one to two tries. Code is P2074 maps TPS correlation at higher load. The maps is new, the TPS is new IAC and ambient temp sensors are new. Removed and cleaned throttle body (was dirty on backside) Checked fuses and relays and connections. Changed out intake gaskets, found some oil in the intake. Currently waiting on new PCV to come in (hopefully that is the fix) PCV does not rattle. Checked fuel pump pressure and relay, checked and cleaned PCM connections. New spark plugs about 1,200 miles ago, coils test okay. Honestly at the end of the rope here and about to just go trade it in.

3 Replies

HMAC300

MECHANIC
48,601 POSTS

See picture for causes, but check for a vacuum leak. See if the gasket around MAP sensor is good and use choke spray to see if you can find a vacuum leak. Then have a mechanic check for the rest like grounds/shorts or a bad PCM.

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Monday, November 7th, 2016 AT 6:47 AM

TRENT PILGRIM

MEMBER
2 POSTS

Where exactly are all the vacuum lines? Is there a vaccum system diagram/schematic?

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Wednesday, November 9th, 2016 AT 1:44 AM

HMAC300

MECHANIC
48,601 POSTS

We do not show a schematic of lines. Just look around on engine then check for air leaks like grommets on valve covers, spray along intake and around throttle body. It cold be one of the other things I have arrows pointed to as well though.

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Wednesday, November 9th, 2016 AT 6:20 AM