A while after I turn on my car, the car the engine shakes and the rpm needles goes from like 500 to 1,200 continuously for a while. Sometimes the car even turns off. Sometimes it also turns off when its on park and i put it on either reverse or drive.
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1988 2.3L Mustang LX
with Flowmaster 40,
Turbine Rims, and
new Headlights!
sounds like a massive vacuum leak.. go to the vacuum tree, and first make sure every port has something on it. then, one by one, pull off the vacuum lines and hold your finger over the hole. see if it changes the idle speed.. o yeah do this whole thing when its running
I bought a new iac valve and the idle problem went away. The only thing is that (forgot to mention it also smoked while it idled) it still smokes but the engine barely shakes(like it wants to). I did some research and question and people say its the Map Sensor or EGR or something else. What can it be?
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1988 2.3L Mustang LX
with Flowmaster 40,
Turbine Rims, and
new Headlights!
more than likely if its the MAP sensor the car will barely run at all. mine went out a long time ago and you'll be lucky if you can keep the car running.
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(Newer Motor [70,000 miles] Spectre Cold Air Intake, EGR Delete, AC Delete, Cat Delete, Flomaster 40 Series Muffler, Shortened Exhaust, American Racing Outlaw Series II Rims, Stalker Hood, Pioneer Deck Set, 12" Pyle Quoobz, Planet Audio Amp, [500 Watts Total]. Comp Cam [mild], Bored .30 over,
What exactly is EGR because I dont think I understand. I've cleaned the part ( dont make fun of me, please correct) where it says "EFI 2.3" with a carb cleaner can. But was it BLACK and MUSHY goo. It was basically covered completely inside. Maybe a pencil would have barely fit.
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1988 2.3L Mustang LX
with Flowmaster 40,
Turbine Rims, and
new Headlights!
I replaced the map sensor two days ago. When the car started it was working fine. No smoke, no idle. Today I wake up and turn on my car. I go to open the gate and when look back at the car, it started to throw black smoke again. DANG IT!!! Could it really be the EGR or Vacuum tree?
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1988 2.3L Mustang LX
with Flowmaster 40,
Turbine Rims, and
new Headlights!
1988 Mustang 2.3lx engine rpm problems 
. Sometimes the car even turns off. Sometimes it also turns off when its on park and i put it on either reverse or drive.
