Hammer trick is if its binded. Dont think it will work cause it is intermittent. Im going to check the lines as you said, if tight then Im gonna return and get new.
It may be worse than I thought. Motor comes to an abrupt halt, shudder and shunts when cranking. Sometimes complete stops then continues cranking. Then runs...
Even had a shunt/shudder after what I think to actually be a running motor. Almost seems like a total lockup. Very crazy acting.
Thoughts?
The damper fluid or the actual motor.
To be a bit more clear, there is a supposed fix for the gauge by adding damper fluid, but I can't seen to find the right stuff. Or I would like to, or rather prefer to if the price is right, to replace the motor in the cluster.
The fixes may not help my...
GF's 99 Yukon has been developing a no start issue. Not sure if it's low on fuel (gauge issue, another thread) or if there is an actual issue. It does have a code for one of the CATs and idle's a bit off.
One time I actually showed up with a gas can and it fired right up, another time (after...
Im sure I can fix the software and it's the least of my worries at the moment. As long as the backup holds up I am happy to fix it later. Im just concerned about this coming back is all. What do you think of the plug when you read it?
Just as I was about to go out and pull the plugs, it occured to me that I do not trust what ScanXL is showing for all the misfires. Why would I trust it for the codes?
Sure enough, codes did not match.
It was one again cyl 3! Changed just that plug and once again runs like a dream...
Im...
Thanks Sun. Ill get the plugs changed out and posted as soon as I can.
Im going to reinstall the app and see if I can get some trustworthy readings.
Hopefully soon I can find my fuel pressure gauge. Im thinking maybe weakening fuel pump. We will see.
Maybe I should explain more how it feels; most of the time it feels fine with just a slight miss here and there. But sometimes, it's crazy missing and hesitation with massive loss of power. If I floor it, it can get up to speed pretty well. Slower seems worse as well as going up bridges (my...
I thought that's what I did. If not, how do I do it?
No arching.
---------- Post added at 07:54 PM ---------- Previous post was at 07:08 PM ----------
Okay, well I officially no longer trust this app. Shows current misfires all over the place. Often they match each other in numbers, yeah...
How do I see current?
Had roomy prime the pump while I was nose deep in the TB, no change. If anything, the longer I held it open the less I could smell it.
Now what?
Unless Im reading it wrong, doesn't it say Im misfiring on all but cyl 1?
For the fuel smell check; running or no?
It has been fairly hot today as well as not having the cover on the air box. I imagine that would explain the temp.
I will have to rent the tool to do the back pressure...
Well the Yukon is acting up again; original thread here.
This time it is not pointing out a specific cyl.
Only have;
P0300 - Random/Multiple Cylinder Misfire Detected; and,
P0430 - Catalyst System Efficeiency Below Threshold (Bank 2)
Seems to be every startup now, and then...
Ah, thread revival. Well I did forget to post back.
At the time I wasnt able to find any Simple Green and decided against PP. So I just decided to try some purpose made stuff, and it worked great!
Still takes quite a bit of work and is kind of pricey, but it does the job very well!
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