'92 302, unsmooth idle/constant rpm
#1
'92 302, unsmooth idle/constant rpm
Hi all here is a quick spec.
NEW:
302 HO
Ignition coil
Wires
Spark Plugs
NAPA Idle air control Valve, Throttle Position Sensor
Venom Injectors
PROBLEM:
I have a irregular exhaust sound. the engines near smooth but when ever the sound changes there's a slight shake. every time the exhaust changes sound for anywhere from one to three cylinders i get more exhaust out my tale pipe as it pushes on my hand harder.
The irregularity in the exhaust cancels out the thought of it being a spark plug or wire. as it tends to be a different cylinder when ever it wants to.
I'm leaning towards Ignition coil or capacitor near it. or the EGR valve.
Also no Codes are present.
NEW:
302 HO
Ignition coil
Wires
Spark Plugs
NAPA Idle air control Valve, Throttle Position Sensor
Venom Injectors
PROBLEM:
I have a irregular exhaust sound. the engines near smooth but when ever the sound changes there's a slight shake. every time the exhaust changes sound for anywhere from one to three cylinders i get more exhaust out my tale pipe as it pushes on my hand harder.
The irregularity in the exhaust cancels out the thought of it being a spark plug or wire. as it tends to be a different cylinder when ever it wants to.
I'm leaning towards Ignition coil or capacitor near it. or the EGR valve.
Also no Codes are present.
#2
Just took it to a mechanics for a quick listen and ideas to this problem. he thought a possible misfire. I replaced the distributor cap and finger. made sure the wires were ran to the plugs the best i could get them so they were not cross firing.
Still have this problem where its like every so often a cylinder/cylinders misfire, yet more of a over fire as more exhaust is being pushed out when the sound changes.
Still have this problem where its like every so often a cylinder/cylinders misfire, yet more of a over fire as more exhaust is being pushed out when the sound changes.
#3
Just took it to a mechanics for a quick listen and ideas to this problem. he thought a possible misfire. I replaced the distributor cap and finger. made sure the wires were ran to the plugs the best i could get them so they were not cross firing.
Still have this problem where its like every so often a cylinder/cylinders misfire, yet more of a over fire as more exhaust is being pushed out when the sound changes.
Still have this problem where its like every so often a cylinder/cylinders misfire, yet more of a over fire as more exhaust is being pushed out when the sound changes.
#4
I've always heard to stick with Motorcraft IAC's; at least that's what is recommended for my Merkur. I had a unknown IAC on my truck and pulled a Motorcraft one from the junk yard...cleaned it and installed; idle is much smoother.
#5
This is the only thing i will have to yet do. As the IAC i installed is a Napa brand. Anyone ever hear if the TPS needs to be Motorcraft too?
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#8
#9
IAC appears to be working but i would almost wonder if it is not slightly adjusting constantly at idle, that is why i get this flutter. as for driving down the road it seems fine, smooth, at a stop i can feel a bit of a shake. If i have the hood up and apply throttle to a constant rpm, the engine does get t fainter flutter than what it does at idle. i guess the only part that i can see replacing could help is the IAC vavle to a MC part instead of Napa's. that is unless the MAF sensor can be the culprit, but i don't think so.