Wow.... had not thought of that. Ummm....ok now you got me thinkin.

Update: New pump, lower filter, and conditioning module assy. (all 1 unit assembled from Ford). Still air at top filter.

Pump, filter, fuel conditioning module assy. on the bench, and 2 return ports looped back to each other, suction line in clean fuel and turn on pump and I get some air bubbles out of pressure line and pump sounds a little suspect (like it's trying to pump air sometimes). This truck is single tank, a...

We have a 2003 F350 6.0 powerstroke (new engine and fuel filters by us 3,000 miles ago) in the shop that keeps getting air in the upper fuel filter housing. I don't have the adaptor to check pressure there so I'm checking it between the pump and upper filter and it is 55psi running, but it will stal...

Thanks Ric, that is exactly what I had in mind! Also, thanks Tina, I have used a TPS at times, but just wanted a little more control and visibility. The OTC tool is what I had pictured in my mind. Thanks for this forum and the great help you all provide!

I'll try Radio Shack again and I might try a fan switch or something along those lines. I have thought about a rheostat out of an old dryer, but I'm not sure what the resistance would be. I was just thinking out loud I guess.

by Eddie8 on Thu Jan 06, 2011 8:53 am Your customer shouldn't be watching you remove that valve cover. They have no reason to be inside the shop and legality wise they shouldn't! Eddie8, It was just a hypothetical situation. If you don't agree, no problem, but a lot of my customers do some of there ...

Anyone using variable resistors in their diagnostic work? I have always used a couple of old fuel sending units that I made up with wires attached to help in diagnosing circuits, such as fuel gauges, etc. Although this works ok, I've always wanted something a little better, and maybe with a little m...

Our shop has a rather slow turn around time, but few comebacks. I clean everything except maybe the inside of the intake, depending on how dirty, and how easy to clean. Some of them [intakes] are almost impossible to clean. My theory: if the trans pan isn't clean on the outside, why would the custom...

My thoughts exactly. Thanks for the advice. I brought the customer in today and showed him what the engine looked like while I still had the v.c. off. Of course he blamed synthetic oil, Chrysler, Elvis, and solar flares for the sludge....... Oh well, I'm off the hook on this one. Thanks again for th...

This customer is not one of my favorites anyway. The tough thing is the Jasper option is about 5 times more money than a chain, but you can't rule out damage from all that sludge. My thinking is that the customer will run it the way it is until it breaks (it has been this way for at least a few mont...

2002 Jeep Grand Cherokee Limited (143,000 miles) in for ticking noise cold, better when warm, but still there. With stethoscope, isolated noise to right bank, front of engine. Suspected timing chain or valvetrain issue, removed valve cover, (customer approved lifters replacement estimate if necessar...

Labor guides are just that, guides. If they were gospel, wouldn't they all match? We have a Motor time guide for a fleet account that requires that we use it, and they rarely are the same as Mitchell (some higher, some lower). Just my 2 cents.

OK, just an update. Scoped CAN wires at trans and no spikes while driving...... however, no codes have come back either. I'm not sure if I improved a connection when OHM testing, or moved a harness near a rub point, or what, but can't duplicate complaint now. Anyway, customer has vehicle now, and th...

Ours is a 4.6L.

Thanks for the replies..... I agree on the possible reflash & scoping these circuits. If I understand the CAN circuit correctly, the modules can lose their "addresses" , therefore their ability to communicate with the other modules on the network, in the event of a possible ground / power loss, or s...

One quick thought..... I got burnt once by looking at the desired ICP and the actual ICP (one is right above the other on the Modis) and getting them flip flopped. Felt stupid after looking at it for an hour saying " I've got EVERYTHING, why won't it start?" then realizing I only had 68 psi ... not ...

We have a 2006 Ford Explorer in for "trans codes". Customer complaint of trans shifting weird, etc.. I could not really duplicate any kind of symptom, other than 3 memory codes in the trans computer. They are U0100 (lost communication with ECM/PCM), U0121(lost comm. w/ABS control module), U0102 (los...

We used to start our diagnostics with a vaccuum gauge, now it seems like a last resort. Not picking on anybody, just not sure why we (I) over-think things.

We also work on several medium duty to heavy duty trucks. I have been exploring the Mitchell software for both and was surprised at the cost, and lack of salesman info. We charge an hourly rate and actual time, and use a MOTOR time book for guidance. It is expensive to get setup to work on these cor...