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Topic: MAP sensor check (Read 922 times) previous topic - next topic

MAP sensor check

From what i gather, and sifting thru my shop manual, this is the way to test the map minus the special ford map tester which was also described.

Ill add this to my DIY link soon enough.


Map sensor check
Apply vac pres of about 15lbs to the map, if it holds vac, move on to next step

Key on engine off test
map sensor signal output is the DB/LG wire
**compare output of like maps and average thier outputs if possible per the shop manual
**your altitude is proportional to the barometric presure which the map works off of.

altitude in ft / voltage
0-----------------1.59
1000--------------1.56
2000--------------1.53
3000--------------1.50
4000--------------1.47
5000--------------1.44
6000--------------1.41
7000--------------1.39

If output is in range compared to other maps then move on

Plug off map vac line
apply a few lbs vac to map, like 5 to 8
start engine
slowly apply 15lbs vac and hold about 1500 rpm
while in this test, run the KOER quick test
are any map codes present? (ie-22) if no, then your problem is not the map, its another vac related issue.