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  #1  
Old 09-22-2014, 05:34 PM
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Nick_Taylor Nick_Taylor is offline
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Old 09-22-2014, 05:36 PM
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This is basically a running chat area. Users coming from OnDemand5 and ShopKey5 will be familiar with this format.

If you'd prefer to use separate topics for General Discussion, let me know.

Nick.
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Old 09-23-2014, 10:24 PM
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I've never had a catalytic convertor so plugged the vehicle would not at least idle. What made this one even stranger is that the customer reported that they just left the driveway and about a half mile down the road the vehicle quit. Made a house call to go check it out and noticed a code P0108. Maybe the MAP died, Baro reading 28.9, normal, unplugged MAP and it would barely idle. Did finally get it to idle with MAP plugged in , only 2 inches of vacuum and of course it's dumping fuel, 10ms injector pulse. a few attempts at restarting and I could see the MAP dropping a little and only momentary before it would stall. I removed the Down Stream 02 sensor first. IT IDLES !!! and there's manifold vacuum. I can even rev it up a little. A little more investigation. That catalytic convertor broke up and plugged up the muffler. That explains sudden loss of power. Vehicle is an 06 Buick Rendezvous with a 3.5
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File Type: jpg 06 RENDEZVOUS PLUGGED EXHAUST.JPG (102.4 KB, 1216 views)
File Type: jpg 06 RENDEZVOUS PLUGGED EXHAUST AT IDLE.JPG (115.0 KB, 1233 views)
File Type: jpg 06 RENDEVOUS IDLING WITH DOWNSTREAM 02 REMOVED.JPG (99.5 KB, 1235 views)
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Old 09-24-2014, 09:03 AM
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I like to start closest to the engine removing one or both upstream O2 sensors of the precats. If only one upstream O2 sensor, the EGR valve might comes off instead if easier and I put a tapered plastic plug over the intake side hole and run it and rev it up to see if it runs and breathes better. WEAR SAFETY GLASSES and shield vulnerable things including hands and face and stand out of the way of any Volcanic Ash jettison.LOL.
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Old 09-24-2014, 07:08 PM
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Do it your selfers, the code reader sitting on the front seat should have been a dead give away. The complaint "ever since I changed my rear brakes I have a grinding noise". No problem, just a bent heat shield. But a closer inspection and...... Well you know those copper washers you get with the new calipers, just use them at your own discretion, you know, where ever they fit. And that whole left caliper, right caliper thing, they all bolt up the same. If you can get those bled out ........
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File Type: jpg copper washers.jpg (265.1 KB, 1265 views)
File Type: jpg bleeders.jpg (215.9 KB, 1268 views)
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Old 09-26-2014, 05:09 PM
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Farm trucks !
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File Type: jpg 06 fuel trims.JPG (118.6 KB, 1225 views)
File Type: jpg f250 screen.jpg (253.4 KB, 1247 views)
File Type: jpg f250 sump.jpg (225.0 KB, 1236 views)
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Old 09-26-2014, 06:35 PM
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Makes you wonder why this has been going on for decades, doesn't it-??
Crud from farm tanks doesn't play nice with vehicles of any age, even the old carbureted ones.
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Old 09-27-2014, 03:32 PM
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After market equipment. The vehicle, a 2005 F150 comes in with a headlight complaint. It seems that the headlights, both high and low beams, work as long as the vehicle is NOT running. Turn the key on to the run position or start the engine, and all goes dead except the marker and brake lights. Even the Flash To Pass doesn't work with the key on. Customer informs me that he already replaced the Headlight switch and the Multifunction switch with no results. Hmmmmm? Check power to the fuses in the central junction box, fuse 35 powers both high beams, no.25 the left low and 23 the right low. Each fuse seems to have power when the appropriate headlamps are commanded with either the key on or the key off. Maybe I have a ground issue with the headlamps, something overloading with the key on. Best to go check the power at the headlamps themselves. Open the hood, look down at the connectors, oooohh, what's this? The headlamp connectors have a splice connector at both lamps. The customer is still here so I ask him, "Did this vehicle ever have a snow plow on it?" I saw his face turn red. It seems he keeps the remote for the plow in the pocket behind the driver's seat and at about the same time the headlight issue came up he had stuffed a phone book in the pocket which, as you guessed it, had bumped the switch on the remote that commands the plow headlamps to come on instead of the truck headlamps. The plow controller is only active when the ignition is on.

Last edited by greasybob; 09-27-2014 at 06:46 PM..
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Old 09-30-2014, 05:50 AM
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Just to follow up on the Rendezvous with the plugged exhaust. Before making any cuts into the exhaust I decided to put my BK8000 camera up into the downstream 02 hole to see what the cat looked like. If it came loose I should see chunks. No chunks, it looked intact. Maybe the muffler collapsed on itself, so I made a cut right in front of the muffler. Critters !!!! The pipe was full of corn as was the muffler. When the customer got on the gas it must have all blown up into a pile in there and plugged up tight. I know that there are flex fuel vehicles out there but usually you distill the corn first.
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File Type: jpg flex fuel.jpg (264.1 KB, 1211 views)
File Type: jpg cat.jpg (175.2 KB, 1188 views)
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Old 09-30-2014, 08:40 AM
Witsend Witsend is online now
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Guess it didn't warm up long enough to pop the corn .To me, It looks like I see skeletal rodent remains in that pile of corn too, So you know it's no Country Boy Prank

I figure if it had been a human prank like shoving bananas up a tailpipe , it would be a lot more effective and more up to date to just use a can of that spray foam expanding insulation with a hose attached and just fill up the muffler with it.
BTW , what's the last picture of?
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