Spark wires
#1
Spark wires
Can anyone tell me how I can check if my spark plug wires need replacing? I have done a visual check on the outside and they look great. I do not know how old they are and I am trying to find out the reason why my truck is STILL shaking when going uphill. Thank you.
#2
You could check continuity with an ohm meter but I don't think it will tell you much. I doubt that the wires are causing the shaking. I would start looking at drive train issues such as universal joints or transmission. One of the experts should chime in soon with some good advice. Good luck.
#3
You could check continuity with an ohm meter but I don't think it will tell you much. I doubt that the wires are causing the shaking. I would start looking at drive train issues such as universal joints or transmission. One of the experts should chime in soon with some good advice. Good luck.
#4
A cylinder 2 misfire will cause shaking under load.............I would look at the cap and rotor and check them for arcing and probably replace them or atleas cleaning off the "corrosion" on the contacts......400 grit sand paper works great for that
#5
My truck doesn't have a cap or rotor, it has ignition coils, I wish it had, those I understand, lol. I checked all my wires and they are all at the same ohms .50 , now I need to find out how to check the coils.
#6
swap the coil that the #2 wire is hooked to with another coil....reset the light and see if it pops a light on the new wire its on......I say its a bad coil (sorry i forgot what year your truck was)
#7
Dave
#8
I tried messing with the soldering on the 4WD switch but that didn't stop the "Service 4WD" light from coming back on. When it did, I couldn't get it into 4WD unless I shut the engine off for awhile. I bought a new switch and now the problem is gone.
#10
RMCK490 and GMCTRUCKS, thank you very much.
Last edited by Daarrve; 05-13-2010 at 06:51 PM.
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