car of DEATH.. well.. it wont run

[JacobM5727]

1987 dodge 600
around 94000 miles
got it around 90000
2.2l, old style fuel injection (as in not real fuel injection)

ok, well my car is more broken (grammer can wait) then usual
it wont start.. or if it does, it dies unless i keep gas on.. if i let it go into idle, it will die and can not be prevented with adding more gas again

it starts out fine, but within seconds goes into a violent chugging of sorts, with some black smoke.. (just once) and what sounds like wussy backfireing, but i really do not know on that

also, if i turn the key (not start it) i can hear a very odd beeping, from at least two locations inside the hood, and what sounds like buzzing/sizzling, as if wires were frying, but i did not see anythng, or smell anything

i know i had been having catalitic converter issues, would that casue this? or is this yet another thing that has gone wrong?

i get a map sensor error code from the check engine light, and that is all - disconnecting the sensor makes no change

i just got a new computer (like, here computer, not car computer ), so i am hoping its cheap to fix.. otherwise i will be.. well.. it would not be good

thanks

[jokostel]

change the spark plugs and the wires.... may also have to
change out the o2 sensor... ~50 for the sensor
may also have something to to with the injectors as well... not too sure....

[Ed_S]

If you've got a code for the Manifold Pressure (MAP) sensor, just unplugging it won't help a bit.
Remember, the sensor's job is to send a signal to the processor, which in turn makes adjustments.
Bad signal = incorrect adjustment
NO signal = incorrect adjustment

[pickel]

Check ALL the vacumn lines. Sounds like a leak somewhere. Get a squirt bottles with gas in it and squirt it around the intake manifold. If the motor picks up, find the leak and repair.

[MDS]

a plugged converter can cause a lot of back pressure killing the engine and also cause it to misfire as the exhaust isn't getting out.

Oh ya, plugged converters are like a death knell to your engine. Unfortunately, you've now got about five different directions to go that all require money. Hope for the best!

[Gomer]

http://www.cybrrpartspro.com/Manual%...delLookup.html

Go there... pull any codes stored in the computer... let us know what you find.

MAP sensor is all? Test the sensor you need a voltmeter and vacuum pump (pump can be "borrowed" from a parts store, they will require around a $50 deposit, but you get it back. The following is from the above linked site.

Backprobe the dark green/red tracer wire from the MAP sensor connector with a voltmeter (do not unplug the MAP connector).

Disconnect the vacuum hose from the map sensor and connect a hand-held vacuum pump to the sensor vacuum port.

Turn the ignition key ON, but do not start the engine.

Apply 5 in. Hg (17 kPa) of vacuum to the sensor and record the reading on the voltmeter/scan tool.

While observing the voltmeter/scan tool, continue to slowly apply vacuum to the sensor until 20 in. Hg. (68 kPa) is reached. The voltage should decrease smoothly without any interruptions.
If the sensor does not perform as specified, replace the sensor and retest

If the sensor performs as specified proceed to the next step
Record the voltmeter/scan tool reading with 20 in. Hg (67.5 kPa) of vacuum applied to the sensor. Subtract the second reading from the first reading (i.e. reading at 5 in. Hg.-reading at 20 in. Hg=difference).

If the difference is between 2.3-2.9 volts, the sensor is okay. Check the wiring and vacuum supply to the sensor.
If the difference is not between 2.3-2.9 volts, replace the sensor with a new one, then retest.

Also... maintenance? When was the last time you replaced tune-up parts, air/fuel fliter, PCV valve.

Cars, like computers, can be hard to troubleshoot if you have let things pile up.

[JacobM5727]

the air filter is brand new, the fuel filter was put on before i got the car, but is not very old, i got the car in october ish, and i dont know what a pcv valve is

[caddmannq]

Sounds like a plugged up convertor to me to.

Unbolt the exhaust pipe from the manifold & pull it off a few inches. If the problem is relieved, you've got a plugged up cat or exhaust system.

It might be that the muffler is plugged up/collapsed inside, but the cat usually goes first.

However: if the engine will rev up to full RPM, this is probably not the case. A plugged cat will usually keep it from revving up.

it wont start.. or if it does, it dies unless i keep gas on.. if i let it go into idle, it will die and can not be prevented with adding more gas again

This part makes me suspect a hole in your intake somewhere where the motor is getting too much air at idle/low RPM. If your MAP sensor is showing an error, that kind of fits the problem, right? Hole in the intake maybe?

I could be dead wrong too.