The engine is chugging at 1500 rpm and it goes away at higher rpm, i replaced a distributer cap and a fuel filter, and it still doing it.
What else can be?
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Your picture of the light didn't seem to come through. Several things will cause restricted power.... a dragging emergency break, a plugged fuel filter, plugged air filter, plugged exhaust pipe and finally check all the fluid levels in the motor as some cars have a limp mode if a level is too low, especially on the oil side.... also make sure the gas cap is tight... a lot of viechle will act up if the vapor return line doesn't have the proper pressure in the gas tank. Next would be wires and plugs, distributer cap and distributer button... spark plugs can run fine at low rpm but foul at higher rpm.
not to sure on model but could be injectors or the inbjector pump not fuel pump as this only send fuel to engine injector pump send fuel to injectors hope this helps
check the ignition module, poss near the distributer for heatsink (contact) paste on the base to draw the heat away from the module. With the engine light coming on, it should have thrown a code possibly a bypass ignition or no pulse while cranking. If so refresh the ignition module.
You should be illuminating the check engine light. If so, rent a scanner, read the codes and pursue to repairs. You should replace the fuel filter and check the air cleaner. The fuel pump may be on it's last legs--check fuel pressure at the fuel rail over the injectors (a tire-valve looking test port). The pressure should be ~45 to 55 PSI with the engine running.
I had a problem like this on my 95 gt 2,2 and it was the distributor cap and rotor. I changed fuel filter, fuel lines, etc. thinking it was fuel related, nope, cap and rotor and 10 minutes of labor and shes perfect.
It could be either or I would change all fuel filters first go for a drive and give it some beans to get any crud out of fuel system if the doesn't work it could be a timing sensor or fuel sensor. They can be dear to replace but if it runs ok while not at idol I would be thinking filter as if they get to dirty they restrict fuel flow at idol but when at higher rpm the suction of the engine helps draw in fuel, although may still run a bit rough
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