There are several signs of a faulty Manifold Absolute Pressure sensor. Poor engine performance, a burning check engine light, a surging engine, increased emissions, and fouled spark plugs are all indicators to look for.
I would suspect the map sensor is bad.
MAP sensor going bad will cause that exact symptom, try unplugging the MAP sensor, if the vehicle will run with it unplugged then you know the MAP sensor is bad. My 88 Dodge Aries did the exact same thing.
Timing, a bad plug (s), bad plug wires, bad maf sensor, bad map sensor, bad o-2 sensor, bad ign. Module
The TPS is not happy with the readings from the map sensor. More than Likely you have a bad sensor.
You can not prevent a sensor from failing.
Yes....the MAP sensor tells the computer the amount of pressure or vacuum in the engine. This changes with throttle opening....etc. If the sensor is bad the settings will be bad. The MAP sensor can be tested for free at AutoZone.....and you can just take it in. They don't need it on the car.
bad oxygen sensor bad map sensor
yes
engine will stall out and run very bad.
how do you k now the cam sensor is bad
you prob. have a bad map sensor. to test map sensor, put the + lead from a dc meter on the center wire that hooks up to the map sensor and the - lead to ground, you should get a reading between .5-4.5 volts any thing below or over map sensor is bad
Sounds like you might have a bad map sensor, i don't know if a 1990 would have a MAF sensor or a MAP sensor I would assume MAP.