Few engine problems.. Help Please

[BlackMark8Li]

ok I don't know where to begin. I guess my car runs rough, well its idles pretty rough. its been happening for a while so I am not sure its the cold weather...whenever I put on the heater or I guess the blower motor the car runs rougher. and it seems like it wants to stall... the problem comes and goes

now I have had a broken rocker arm in my last car and my old engine had a broken rod, so I know what a engine feels like when its about to die... stummbling and no power.. the problem here is that its stumbling but its got plenty of power in the upper rpms, its just the lower 1's thats the problem. I am thinking a sensor but idk what do you guysthink?

 

[unity]

Well if it stumbles during idle, thats easy - IAC. 93-96 Marks are a pain to replace. 97-98, more time to go to the store and buy it than replace it.

Be carefully, VERY careful if the rocker arm fell out. The arm is probably find, its those springs that fail. Dont rev it much, your probably going to be okay, but one "wrong move" and that rocker arm could do some damage. Happen to have a 1995?

 

[BlackMark8Li]

Well if it stumbles during idle, thats easy - IAC. 93-96 Marks are a pain to replace. 97-98, more time to go to the store and buy it than replace it.

Be carefully, VERY careful if the rocker arm fell out. The arm is probably find, its those springs that fail. Dont rev it much, your probably going to be okay, but one "wrong move" and that rocker arm could do some damage. Happen to have a 1995?

it happened to my 93 and when it happened the car was pretty undriveable.. I thought something major went in the car.... I do hear more tapping comming from the engine but I can't say for sure it wasn't there before.. it just seems a lil louder now

 

[unity]

Sometimes the injectors can be rather noisy and some mistake that for a problem when its not. When a rocker spring goes, you will know. It almost becoming common on the 95 but can happen any year prior to 96. In 96 Ford went with beehive type springs which seem to hold up a LOT better.

 

[jdlmkviii]

Sounds like your idle air control... Try starting your car and letting it idle with no accessories on, disconnect your IAC motor and slowly put a small load on it (turn the steering wheel slowly, A/C or heater on low, etc...) and compare the effects to what it was doing before and if it made zero difference, replace it... not a perfect diagnosis but it'll give you a small baseline for what conditions would look like if your IAC is bad.