Recently my car has been having a small hiccup on the highway while accelerating or going up a hill in 5th gear. It feels like I loose power for a split second. I don't trip any miss fire codes, which if it was fuel or spark I imagine I would. Does this sound like my clutch starting to slip? I think its the original clutch. 2004 LS Sport with eco and getrag. 117k miles. Put the supercharger kit on about 10,000 miles ago. Any other ideas or tests I can do to prove my theory?
Find a good hill, get into 5th, wait until you are around 2500 rpms, and then go WOT. Watch the tach, if the rpms climb faster then they should then it is your clutch.
Put it in 5th at a dead stop, rev the engine and pop the clutch. It should stall within a second or so. If it doesn't the clutch is bad.
Unfortunate part is that if it's bad it usually makes a lot of smoke, and the clutch goes from bad to useless when you do this.
i find it amusing that SHOoff has nothing better to do but follow me around & be an unhelpful dick in even cross-forum. - Jon Mick
I like Tinkles way more, lol
"In Oldskool we trust"
I think I'll try tinkles method thanks though SHOof haha.
Get the car onto the a road at like 45 or 50 in 5th. Put it in 4th and the clutch should grab and slow the car down and rev the engine up. If the engine revs slow the clutch is bad.
That doesnt sound like the clutch to me though. Sounds like a misfire under load. The PCM has to see a certain number of misses in a set time interval to throw a code. It may not throw a code for a single miss.
Yeah, but at 2000 rpm cruising on the higway, the engine is making a whole revolution 33 times per second. So if it's misfiring it should, to the human eye at least, pick up a miss almost immediately
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i find it amusing that SHOoff has nothing better to do but follow me around & be an unhelpful dick in even cross-forum. - Jon Mick
When my Fire had a bad plug wire it would miss constantly under load merging onto the highway. I could see the black smoke coming from the tailpipe from all of the raw fuel before it actually threw a misfire code. Youd think our ECMs would be more sensitive but apparently now.