Code reads that map sencor is bad i changed it and the van still misses badly

thought? must be using a English translator, that's ok but confusing.
1500 ram not VAN
USA car or NOT, no country told (sad face)
manual transmission or automatic
2wd or 4wd?
I can not find 1255 in the book.(SM)
1255 is stated at dodge forum as (but is wrong for 1997)

P1255 Pedal Correlation PDS2 and LPDS Low
PDs means throttle(gas) pedal switch , that does not exists here..

that means the throttle by wire is bad, (but there is no TBW in 1997)
did you type the dtc wrong or year wrong IDK but seems wrong
learn that P1xxx codes are OEM only factory only codes for one model car and engine.

do not read posts about other cars and P1255 or you get endless lies. P0xxx codes are standardized USA and p1, and p2 up are not.
DO not read inernet lies that claim, chevy DTC codes are the same and DODGE or go broke fast you will
for sure P1xxx codes !!!

looks like dodge use this code 3 times
bad O2
bad MAP
and later mid 2000s bad PDS.
fun is not there, to learn what it is,
but do read here. USA cars/trucks if is (or Canada)

https://eautorepair.net/Marketing/Default.asp

Had the same problem with my 91 Voyager, just died, it would only start with the peddle floored and then sputter like it was missing or not getting fuel before dying. Went thru everything, ended up being a plugged cat. Popped it loose enough to allow blow by and it started right up.

Crankshaft position sensor maybe , throttle position sensor , coolant temp. sensor etc.... It could be a lot of thing's . Instead of buying this part an that part ,take it an have it diagnosed . To a good ASE certified repair shop . Unless you like buying unneeded parts .

Maybe a vacuum leak or a bad Idle speed control motor.What year and type of ford?

P0106 - MAP/Barometric Pressure Circuit Range/Performance Problem

The Powertrain Control Module (PCM) uses the Manifold Absolute Pressure Sensor (MAP) to monitor engine load. (NOTE: Some vehicles have a Barometric Pressure (BARO) sensor that is integral to the Mass Air Flow (MAF) sensor and do not have a MAP sensor. Other vehicles have a MAF/BARO and a redundant MAP sensor where the MAP sensor functions as a backup input in case of MAF failure.) The PCM supplies a 5 Volt reference signal to the MAP sensor. Usually the PCM also supplies a ground circuit to the MAP sensor as well. As the manifold pressure changes with load, the MAP sensor input informs the PCM. At idle the voltage should be 1 to 1.5 Volts and approximately 4.5 Volts at Wide Open Throttle (WOT). The PCM looks for any change in manifold pressure to be preceded by a change in engine load in the form of changes in throttle angle, engine speed, or Exhaust Gas Recirculation (EGR) flow. If the PCM doesn't see any of these factors change while detecting a rapid change in MAP value, it will set a P0106.

Potential Symptoms: The following could be symptomatic of a P0106:
* Engine runs rough
* Black smoke at tailpipe
* Engine will not idle
* Poor fuel economy
* Engine misses at speed

Causes: A P0106 could be caused by:
* Bad MAP sensor
* Water/dirt intrusion affecting MAP sensor connector
* Intermittent open in the reference, ground, or signal wire for the MAP sensor
* Intermittent short in the reference, ground, or signal wire for the MAP sensor
* Ground problem due to corrosion causing intermittent signal problem
* A break in the flexible air intake duct between the MAF and the intake manifold
* Bad PCM (do not assume the PCM is bad until you've exhausted all other possibilities)

Possible Solutions: Using a scan tool, watch the MAP sensor value with the key on, engine off. Compare the BARO reading with the MAP reading. They should be roughly equal. The voltage for the MAP sensor should read approx. 4.5 volts. Now start the engine and look for a significant drop in the MAP sensor voltage indicating the MAP sensor is working.

If the MAP reading doesn't change perform the following:
1. With the Key on, engine off, disconnect the vacuum hose from the MAP sensor. Using a vacuum pump, pull 20 in. of vacuum on the MAP sensor. Does the voltage drop? It should. If it doesn't inspect the MAP sensor vacuum port and vacuum hose to manifold for a restriction of some kind. Repair or replace as necessary.
2. If there are no restrictions, and the value doesn't change with vacuum, then perform the following: with the Key on and engine off and the MAP sensor unplugged, check for 5 Volts at the reference wire to the MAP sensor connector with a Digital Voltmeter. If there is none, check for reference voltage at the PCM connector. If the reference voltage is present at the PCM connector but not the MAP connector, check for open or short in the reference wire between MAP and PCM and retest.
3. If reference voltage is present, then check for existing ground at the MAP sensor connector. If it isn't present then repair open/short in the ground circuit.
4. If ground is present, then replace MAP sensor.

Other MAP sensor trouble codes include P0105, P0106, P0107, P0108 and P0109.

I hope this helps to solve it (remember to rate this answer).

This info coutesy of OBD-II codes.com

Potential Symptoms The following could be symptomatic of a P0106:

• Engine runs rough
• Black smoke at tailpipe
• Engine will not idle
• Poor fuel economy
• Engine misses at speed

Causes A P0106 could be caused by:

• Bad MAP sensor
• Water/dirt intrusion affecting MAP sensor connector
• Intermittent open in the reference, ground, or signal wire for the MAP sensor
• Intermittent short in the reference, ground, or signal wire for the MAP sensor
• Ground problem due to corrosion causing intermittent signal problem
• Bad PCM (do not assume the PCM is bad until you've exhausted all other possibilities).

Possible Solutions Using a scan tool, watch the MAP sensor value with the key on, engine off. Compare the BARO reading with the MAP reading. They should be roughly equal. The voltage for the MAP sensor should read approx. 4.5 volts. Now start the engine and look for a significant drop in the MAP sensor voltage indicating the MAP sensor is working.
If the MAP reading doesn't change perform the following: 1. With the Key on, engine off, disconnect the vacuum hose from the MAP sensor. Using a vacuum pump, pull 20 in. of vacuum on the MAP sensor. Does the voltage drop? It should. If it doesn't inspect the MAP sensor vacuum port and vacuum hose to manifold for a restriction of some kind. Repair or replace as necessary. 2. If there are no restrictions, and the value doesn't change with vacuum, then perform the following: with the Key on and engine off and the MAP sensor unplugged, check for 5 Volts at the reference wire to the MAP sensor connector with a Digital Voltmeter. If there is none, check for reference voltage at the PCM connector. If the reference voltage is present at the PCM connector but not the MAP connector, check for open or short in the reference wire between MAP and PCM and retest. 3. If reference voltage is present, then check for existing ground at the MAP sensor connector. If it isn't present then repair open/short in the ground circuit. 4. If ground is present, then replace MAP sensor.

O2 sensors indicate unburned oxygen in the exhaust sysytem. Bad O2 sensors causes fuel mixture to run rich. It causes fuel consumption and your emmissions test will not pass. Check for vacuum leaks check the manifold.check for a misfiring cylinder, a burned exhaust valve that is leaking compression. replace the O2 sensor or sensors. Some cars have 2 . One for the intake another for the out take. If it reads a code for the Map sensor along with the O2. It is better ifyou replace both sensors. But I think that the problem lies in the oxygen sensor or sensors. Pleae vote my answer if this helps.

Where is the map sencer located in the engine of the club van 1996 7.5 engine please email me back at [email protected] Thank you, Michelle Lopez

Check Spark Plug Firing Order Between Distributor Cap And Plugs Two Could Be Mixed Up And Cause This Problem.

Is that the only sensor reading low voltage? Change the sensor.