Knucklehead97 Posted August 25, 2013 Share Posted August 25, 2013 So messing with my truck and my brothers truck today. I think his HO might have a rough idle. It idles at about 750 rpm but it shakes. Runs good though. It just feels like a rough idle and I was wondering if this is normal or what I could do to fix it? Link to comment Share on other sites More sharing options...
cruiser54 Posted August 25, 2013 Share Posted August 25, 2013 Not normal. Every 30,000 miles it's due for plugs, wires, cap and rotor. How long has it been? Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 25, 2013 Share Posted August 25, 2013 What year HO? Link to comment Share on other sites More sharing options...
Knucklehead97 Posted August 25, 2013 Author Share Posted August 25, 2013 I have no idea, honestly. He bought it in '11 with like 170k and hasnt put 5k on it. He's been so screwed over on suspension and steering that we didnt really notice the idle until now. He doesn't have a job currently so the plugs and all that will have to wait I guess. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted August 25, 2013 Author Share Posted August 25, 2013 And its a 97 Link to comment Share on other sites More sharing options...
92tanMJ Posted August 25, 2013 Share Posted August 25, 2013 750 rpm seems low to me but at the same time I feel like thats were it should be,, Ill go look at mine here soon lol but the shaking could be coming from worn out motor mounts? :dunno: Link to comment Share on other sites More sharing options...
Crash Posted August 25, 2013 Share Posted August 25, 2013 While it's running, pull one plug wire at a time, see if anything changes. I also recommend some seafoam and maybe some MMO. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted August 26, 2013 Author Share Posted August 26, 2013 We changed motor and transmission mounts last year with some rustys offroad HD mounts. I was hoping there was just a bad vacuum hose or something like that, like with my Renix. Its cheaper to just change a vacuum hose haha. But really the truck runs great and seems to get great gas mileage Link to comment Share on other sites More sharing options...
92tanMJ Posted August 26, 2013 Share Posted August 26, 2013 We changed motor and transmission mounts last year with some rustys offroad HD mounts. I was hoping there was just a bad vacuum hose or something like that, like with my Renix. Its cheaper to just change a vacuum hose haha. But really the truck runs great and seems to get great gas mileage Thats how my cherokee was when I first got, and it was due to a total lack of maintenance by the PO. Just did a full "tune-up" clean the throttle body and some 703s and it runs much better now. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted August 27, 2013 Author Share Posted August 27, 2013 We'll end up doing that ASAP once he gets a job. Thanks guys. Link to comment Share on other sites More sharing options...
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