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Prev Professional Automotive Repair Technical Discussions for December 5, 2017
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Open Help Requests for All Makes and Models
Help Request Answers
2003 Acura TL Type-S 3.2L Poor Idle Quality, Cuts out, Misfire VIN: 19UUA56893
Customer came in with an intermittent misfire issue we've driven car but don't feel misfires, but when watching scanner misfires originally showed up on cylinder # 5 I had a know good coil and # 5 went away but now scanner shows cyl #'s 3, 5 & 6. Problem i...
2005 Audi A4 3.0L Steering VIN: WAUAT48HX5
Hello Audi Techs, We have a noise turning the steering wheel like the fluid is low but it isn't. There aren't any leaks. My question is does the system have a filter perhaps in the power steering reservoir that could be restricted?? I know this happens on ...
2010 Audi S4 3.0L Pressure plate VIN: WAUDGAFL3A
Customer bought in car with clutch pedal sticking to floor.We replaced clutch pressure plate disc, fork and throwout bearing. now pedal hard and cant push pedal in, any adjustment? bad pressure plate?
2006 BMW 530i 3.0L Surge, Misfire, MIL Lamp on VIN: WBANE73546
Hi we are reposting this car due to more help needed. We are in the process of removing the exhaust can to inspect the housing and seal rings for wear. The problem we are running into is with the timing tool as far as the flywheel locking tool, it fits the... Trouble codes: 2A87
1993 Cadillac DeVille 4.9L starting system VIN: 1G6CD53B5P
This one is a head smacker. Car came in as a no start but when I got to it of course it started. Couldn't get it to fail but customer said when it happened there was no clicking sound but still had run power. Someone at her work tapped on starter and then ...
2008 Chevrolet Tahoe LTZ 5.3L Can bus VIN: 1GNFC13048
I'll see if it allows me to add a picture of the wave form. but this vehicle came in with a loss of comm ecm - tcm U0100 & U0101 lost of comm BCM U0140 CAN Buss U2100 scan tool communicates with all modules. so what i did after was hook up my scope t...
2010 Chevrolet Equinox LS 2.4L Engine VIN: 2CNFLCEW3A
Vehicle was towed into us with a no start. Customer stated they were driving down highway and engine just shut off. Upon arrival at our lot we tested compression, found zero in all cylinders. Removed valve cover and found timing chain was very loose, could...
2009 Dodge Ram 1500 Sport 5.7L Misfire VIN: 1D3HV13T29
Customer come in with MIL on P0308, P0302 and P0300. We check the basic (spark plugs, ignition coil, fuel injector). We have swap everything around and the misfire stay at cylinder #8 and #2. Before the customer come to us, the dealer already replace the s... Trouble codes: P0300 (Random Misfire), P0308 (Misfire 8), P0302 (misfire 2)
1997 Ford Taurus GL 3.0L Excessive Cranking VIN: 1FALP57U6V
When car originally came in there was a complaint of excessive crank time. Problem was verified and sometimes engine would crank for up to 15 seconds before starting. Put a fuel pressure gauge on it and it barely primed to 15 psi and never really got any b...
1999 Ford F-350 Super Duty Lariat 7.3L Lpop VIN: 1FTSW31F2X
Hey guys, this was a tow in after sitting 9 months at another shop. They replaced the front timing cover for a coolant leak. We cannot seem to prime the low pressure oil pump. We pulled the pan, cleaned the pick up tube (full of rtv) and replaced the oil p...
2000 Ford Explorer XLS 4.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1FMDU62X2Y
customer bring car with check engine light with a low circuit bank 1 sensor 2 oxygen sensor. after inspecting found it disconnected and damage connector. i advise customer to replaced it. after this clear MIL light and reset KAM and LONG fuel term goes to ... Trouble codes: P0172, P0175
2013 Ford Escape SEL 1.6L Timing Belt VIN: 1FMCU9HX9D
I'm hoping some of you Ford experts can give me some theoretical knowledge here. I've done the timing belt and water pump on the above vehicle using the OTC tool set to align the camshafts with the crank. However, the OTC tool set does not come with the fl...
2003 GMC Envoy SLT 4.2L air bag ligh
I have an 03 envoy with a B1001 code in the airbag module that I can clear and will return on the next restart. It appeared after installing and programming this new BCM. SPS told me I may have to let the BCM learn the SDM serial number, if I remember corr...
2005 Jeep Liberty Limited 3.7L Engine VIN: 1J4GK58K45
Came in for vlv covers leaking oil and a vibration on acceleration. If you rev this 3.7L V-6 it will vibrate from 1200 to 1800 rpm in neutral, it does not have to be in gear. It is most acute right at 1500 rpm, where it will shake the steering wheel and th...
2010 Mazda CX-7 Grand Touring 2.3L Cel VIN: JM3ER4W33A
Vehicle was bought at auction to resell. CEL was on with P0012 code, rattle at startup, and turbo leaking oil. Replaced turbo and necessary components. Following T-SB for related CEL code, replaced timing chain, VVT gear, guides, tensioner, crank bolt, and...
2010 Mercedes-Benz GLK350 4Matic 3.5L transfer case VIN: WDCGG8HB9A
I have a noise starting from the transfer case at 30mph and above ( sounds like a bearing noise ) I was looking for information on possibly repairing the transfer case . Im in the process of removing the transfer case from the transmission . i have removed...
2003 Toyota Corolla CE 1.8L engine VIN: JTDBR32E03
We replaced the engine on this vehicle due to main bearing failure, got motor back together, now has a rough idle and all 4 cylinders are misfiring at idle, drives and shifts out fine. Have checked and rechecked to no avail. Tried smoke test to see if poss...
2008 Volkswagen Touareg 3.6L Misfire VIN: WVGBE77L48
Help...doing a smoke test in the morning looking for vacuum leak and then will be doing a upper engine clean in the morning but could use all the help i can get...thank you Trouble codes: P0300 (Random misfire), P0303 (Clyinder 3 misfire)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2008 BMW 535xi 3.0L engine VIN: WBANV93548
Well, thank you all for the quick replies. We rush shipped a timing tool kit and checked timing, for the time being I was releaved, as the timing was PERFECT. reassembled under the assumtion evreything was ok. fired it up, bad skip. At this point I confirmed t...
1991 Chevrolet Corvette 5.7L Misfire VIN: 1G1YY238XM
We found the temperature sensor and knock sensor needed to be replaced. Another shop told us the distributor was the wrong one for the vehicle. It had been installed with a replacement engine control unit and the two were "married" together and therefore the ...
2004 Chevrolet Blazer LS 4.3L air bags VIN: 1GNCS13XX4
Thanks for all the advice it was very helpful I will probably have the org sent in
2003 Ford Taurus SE 3.0L Heat VIN: 1FAFP56U53
Removed and inspected water pump no impeller corrosion or damage. I have a HECAT so I for giggles hooked to the heater hose to the water pump and flushed the core and block I saw NOTHING come out of the heater core or block. Reinstalled water pump and a new ...
1997 Mazda B2300 2.3L Poor Idle Quality VIN: 4F4CR12A5V
This vehicle is still not fixed. Owner did not want to spend any more money on it. I tried blocking the EGR, to no effect. Tried a rebuilt MAF (Cardone), still got the same 152 Hz reading. Yes, I am at sea level and the fuel trims stayed +/- 5-7%. Hate to give... Trouble codes: P0135 (H02 htr rh upstream).
2001 Mercedes-Benz SL500 5.0L Dinging / Flashing VIN: WDBFA68F71
Thank you for all of the great responses they were all very helpful! We found that we couldn't do anything to create the fault going up and down dips in the pavement or driveway. The fault would happen randomly with no fault codes. We even drove with the teste...
2012 Mercedes-Benz ML350 Bluetec 4Matic 3.0L engine VIN: 4JGDA2EB6C
Thanks to all who replied. I had to tear apart again and remove oil cooler.One of the oil cooler seals had slipped slightly.the second time around I used adhesive around seal edges ,not surface and left overnight. Learned on the second go around that I coul...
2004 Nissan Xterra XE 3.3L Transmission VIN: 5N1ED28Y34
Hello everyone. Even though this was very intermittent and only on a cold start we started by pulling the transmission oil pan. We found our problem right there, full of metal particles. Not sure were it all came from but there was a lot of it. We recommended ...
2013 Nissan Versa 1.6 SV 1.6L Transmission VIN: 3N1CN7AP3D
Fluid was dark and had bad smell, recommend calling Nissan for possible warranty repairs, had 12 days left on warranty. Thanks for all your help.
2006 Subaru Outback XT 2.5L Hesitation VIN: 4S4BP67C86
Hey all, thanks for all the replies. I had a lot of suggestions: check cam--timing, too much water or ethanol in the fuel, scope knock sensor, check compression/leakdown, turbocharger wastegate sticking. So I did recheck the cam-timing and it was spot on. ...
2009 Volkswagen Beetle 2.5L power window VIN: 3VWRG31C79
Thanks to all who replied. Most of you said "Broken wire in door jam" and you were right, but it's a little more fun than that. The Prodemand wiring diagrams split the module into two halves, the power window half and the door module half. The pin 3 Blk/Bl...
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