Question about 1996 Pontiac Grand Am
Already checked fuel pump and ign mod and coil packs. ran diagnostic scanner and came up with circuit low input for maf or vaf a, and map/baro. also evap emission control sys malfunction.
You will have to replace the map sensor that is most likely the problem but im not sure what the circut low input is i need more details
Posted on Nov 12, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
A faulty engine coolant temperature (ECT) sensor. Compare the ECT with intake air temperature (IAT) on a completely cool engine with a scan tool. The ECT should be within 3?°C (5?°F) of the IAT. If not, refer to DTC P0128 .
You need a scan tool to check this stuff !
Did you perform the Diagnostic System Check-Engine Controls?
Go to Step 2
Go to Diagnostic System Check - Engine Controls
Did you find an open fuse?
Go to Step 10
Go to Step 4
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