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Prev Professional Automotive Repair Technical Discussions for January 8, 2015
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Help Request Answers
2006 Audi A4 Cabriolet 1.8L timing VIN: WAUAC48H46
Thanks to all that respond to this.I have 06 audi a4 1.8 turbo,cutting to the chase I did head gaskets due to overheat. Sent head to local machine shop with cams and chain tensioner in place. Got car all back together and had low power [...] code. Tried cam...
2002 BMW 525i 2.5L winshield wiper VIN: WBADT43462
Customer came in with his wipers not working at all. so after test the system I found that the wiper relay was not working properly, I could mainualy work the relay and make the wipers come on and work. but they would not come on bye there self. so ordered a r...
2003 BMW X5 3.0i 3.0L Abs, Dcs VIN: 5UXFA535X3
I have a 03 BMW x5 ABS, DSC and brake light on. Code 5A DSC brief power interruption and 0B sensor/vehicle allocation incorrect or not availible. I have calibrated steering angle sensor with no problems. When I erase codes 5A returns right away, 05 comes back ...
2008 BMW X3 3.0si 3.0L Cuts out, Stall VIN: WBXPC93478
Hello to all the bmw tech out there, okay customer came n with an oil leak, the head gasket was leaking just a bit, so we pulled the head off and replaced the gasket, sent the head to the machine shop, no problems before we did the head work, put it back toget...
2008 BMW X5 4.8i 4.8L Battery VIN: 5UXFE83568
I'm so lost on this . Car died out, while customer was driving. Car restarted with a jump pack. Back at the shop.. we charged battery , but only held 11.7 volt charge. Started engine and voltage remains the same 11.7. Should the alternator still try to charge...
2006 Buick Lucerne CX 3.8L No Start, no crank VIN: 1G4HP57206
Cleared fault codes, the P1629 is the only code remaining. Verify current correct trans selector operation. Have power and groud at theft module. Have no communication with theft module, drivers door module, and passenger door module. Low speed GMLAN shows 16.... Trouble codes: P1629 (Theft Deterrent Fuel Enable Signal Not Received), P1819 (DTC P1819 Internal Mode Switch - No Start/Wrong Range)
1982 Cadillac DeVille 4.1L Stall VIN: 1G6AD6989C
Hello all. I need some help with this oldie. The vehicle stalls only during parking lot turning. What I mean by that is the vehicle never stalls on the road during turning or at a traffic light. Idle speed is correct and the idle speed motor extends and retrac...
2006 Cadillac CTS 3.6L Both Front Seats VIN: 1G6DP57706
Complaint that both front seat heaters (cushion and back) stopped working at the same time. When switches activated, display on HVAC shows they both are on, which is confirmed by scantool data. Fuse boxes are under rear seat - when switches activated, relays ...
1997 Chevrolet K1500 Suburban 5.7L No Start VIN: 3GNFK16R3V
Vehicle came n with a no start, charged the battery and started testing things, customer had been working on suv before us. found that it had no pulse at the inj. wires were good, replaced the pcm and reset the security, now I have pulse but still does not sta...
1998 Chevrolet S10 LS 2.2L No Start, Misfire VIN: 1GCCS1946W
Plugs are gas fouled changed and still no start , pops back through intake like its out of time , replaced ign module no change, checked timing chain its right on, sometimes it will start if you hold it to the floor and seems to run ok after ya get it started.... Trouble codes: P0335 (Crankshaft pos sensor circuit), U1000 (No state of health from module), P1626 (Veh theft det fuel enable signal loss)
2006 Chevrolet Trailblazer LT 5.3L Misfire VIN: 1GNET13M86
I have an 06 Trailblazer with the displacement on demand 5.3 engine.It came in last February with a collapsed D.O.D. valve lifter on the left bank.Customer had us replace lifters on left bank.Truck came in a couple months ago with a collapsed D.O.D. lifter on ... Trouble codes: P0300
2008 Chevrolet Cobalt LT 2.2L MIL Lamp on VIN: 1G1AL58FX8
Hello and thanks. As I am primarily a foreign car tech, this car has me perplexed. It came in with DTC P0128. R&R'd the thermostat, can see it is physically bad. Replaced stat and ran engine. My problem is that (with two different Snap-on scan tools) I get dif... Trouble codes: P0128 (Engine coolant temp)
2008 Chevrolet Silverado 1500 WT 4.3L No Start, MIL Lamp on VIN: 1GCEC14X48
Customers original concern was a no crank condition. Found no C.E.L. illumination on dash. Scanned vehicle and no communication with ecm but can communicate with all other modules. checked B+ and grounds all good. Installed new ecm and C.E.L. now flashes on da... Trouble codes: P0315 (Ckp variation not learned), P0602 (Module not programmed), U0121 (Lost communication with abs), U0140 (Lost communication with bcm)
2000 Ford Taurus SE 4-Valve 3.0L Climate Control VIN: 1FAFP56S1Y
This Taurus developed issues this past summer that were very intermittent. They have become much more consistent, but somehow seem to disappear every time I get it in the garage. The vehicle has the electronic climate control. It uses the control head to com...
2001 Ford F-550 Super Duty Lariat 7.3L electrical VIN: 1FDAF56F51
were not a diesel shop but servicing fleets other p/u gas engine. a very strange problem.customer stated vehicle starts on its own without keys in ign.intermitenly.has found truck sitting in park space with starter cranking and has burned up starter in past,st...
2008 Ford Focus S 2.0L Poor Idle Quality, Surge, Stall VIN: 1FAHP34N88
Idle surges up and down. Almost stalls when turning steering wheel and when fans come on. No vacuum leaks found. Fuel trims ok. No codes. Cleaned EGR. Reset KAM. PCM flashed with Ford IDS. No misfires. Purge Valve not stuck open. I've run out of ideas. Please ...
2010 Ford F-150 FX4 5.4L Mechanical VIN: 1FTFW1EV9A
Hi guys i have this 2010 f-150 and am doing fluid services on it IE coolant flush,transfer case flush,front and rear diff flushes and trans flush.My ? is does anyone know how to bypass or lie to the TFT trans fluid temp sensor to get fluid to flow so i can do ...
2011 Ford Fiesta SE 1.6L MIL Lamp on VIN: 3FADP4BJ5B
This vehicle came in with a p0171 Bank 1 lean. Found no vac. leaks. Vehicle has long term trims between 16 and 24 with short term being around -5 to 5. Any common issues with these? Trouble codes: P0171
2001 Honda Insight 1.0L Charge lamp stays on VIN: JHMZE137X1
This car will sometimes on startup fail to extinguish the battery lamp and testing shows the DC/DC converter to be shut down.The cause of shutdown is grounding of the 5V signal on the Grn./Blk. wire at the MCM (#27).I have cut this wire and when it is open the... Trouble codes: P1449 (Battery module deviation)
2001 Honda Odyssey EX 3.5L converter performance VIN: 2HKRL18631
I have come to you good people at IATN a few times and you have almost always helped me out. I have a 2001 Honda Odyssey that has been beating me up for about a month now. I will start from the beginning. This is a friend of mine from Philly that I help out wi...
2009 Jeep Compass Sport 2.0L Reverse VIN: 1J4FT47A49
We replaced the valve body due to a failed primary oil pressure sensor. Used OE Chrysler parts. Got all done and everything was great. Pulled the car in and out several times. Customer came to pick up car and we noticed a slow engagement to reverse. If you go ...
2005 Land Rover Range Rover HSE 4.4L MIL Lamp on VIN: SALME11425
The original repair (replace engine) was needed because of extreme overheating. The customer drove with a busted heater hose fitting until it wouldn't drive anymore. These codes happened after replacing the engine. Monitoring the O2 sensors: they flat line aft... Trouble codes: P1162 (O2 sensor precat aging bank1), P1164 (O2 sensor precat aging bank2)
2004 Lexus IS300 3.0L ABS light's on VIN: JTHBD19254
Dear Toyota & Lexus Gurus, really need help on this IS300.When ever you apply the brake slighty and the vehicle is rolling at slow speed then the brake & ABS light is come on along with the ABS pump kicked in. 8 DTCs can be retrieved: from C1271-C1278 & C1281....
2004 Lincoln Navigator 5.4L Suspension Computer VIN: 5LMFU28R84
No communication with suspension computer/module (no power coming out)
2003 Mazda 6 i 2.3L Poor Idle Quality, Surge VIN: 1YVFP80CX3
Car starts right up cold but surges bad.3 to 5 min later car runs great no problems,runs down the road just fine,Only code is the PO340 camshaft sensor.Can not find any other problem but the sensor,Would guess that the camshaft is off.Car was 3 1/2 qts low on ... Trouble codes: P0340
1991 Mercedes-Benz 300CE 3.0L No Start VIN: WDBEA51D0M
Need help with this one, come n on a hook, customer went out to start it and all it would do is crank over. spark was very weak, so I put on cap rotor and a set of spark plug wires. I can hear the fuel pump running and no it is getting good spark, but still ca...
2005 Mercedes-Benz S430 4Matic 4.3L Heating System VIN: WDBNG83J55
Hello Benz technicians, this S 430 as cool heat. The engine temperature is fine, the thermostat and pump are new. The heat all way up is warm, not hot. set at 70f and 85f is about the same. I need little refreshing o this matter, it as been a while since I dea...
2005 Mercedes-Benz C230 Kompressor 1.8L Lighting VIN: WDBRF40JX5
Mercedes tech, please help on this bad boy. Car came in with a weak battery, need jump start before drove it in. Customer state start a week ago, instrument cluster light & headlight start flashing. SRS, traction control light & check engine light randomly com...
2011 Mercedes-Benz R350 Bluetec 4Matic 3.0L bluetec tank VIN: 4JGCB2FE6B
car was towed in no start customer on vacation over new years on way home service bluetec light came on kept driving till had no starts left was towed to shop. customer put 2 gals in tank but would not reset. still had no start left on dash. we put 5 gals in a...
2004 Nissan Pathfinder Armada SE 5.6L Engine VIN: 5N1AA08B74
R+R 5.6 engine in an 04 Armada. Popped on first crank. power to injectors. Hard code p0340. Replaced cam sensor, checked grounds, performed Nissan p0340 diagnostic flow chart. Good power, good grounds, no short. Took to nissan and they won't work on it. Next s...
2011 Nissan Sentra SR 2.0L electrical? ecm? VIN: 3N1AB6AP1B
6 months ago, we had issues with this car randomly just cranking and cranking, with no start, then randomly, it would start and always keep starting for many starts after that. Finally, we had the battery cable installed and that seemed to fix it for the last ...
2008 Pontiac G8 3.6L windshied wipers VIN: 6G2ER57768
I have multiple emissions related codes. And no windshield wiper operation. I have no power at any of the under hood fuses. I do have power at the main feed (Big B+) wire. I have checked on the G8 forum, and downloaded the fuse box identification of the proper...
2005 Subaru Outback i 2.5L MIL Lamp on VIN: 4S4BP61C65
Hi all, This one has me going crazy. Car came in a few weeks ago with a p0050 and p0154. The tech I work with slammed a a/f sensor in it and shipped the car. Customer brought it back a week later with only a p0050 returning. I checked the resistance of the ... Trouble codes: P0050 (B2S1 A/F heater circuit fault), P0154 (B2S1 no activity)
2000 Toyota Camry CE 2.2L Cuts out, Stall VIN: 4T1BG22K0Y
This car dies every time it warms up. just flat dies, I have labscoped the CMp and Ckp sensors while it dies, and each waveform looks great. I monitored the CTS as it dies, and no dropout or erratic readings, thinking maybe the scanner wasn't fast enough to ca...
2003 Toyota Sequoia Limited 4.7L Lighting VIN: 5TDBT48A73
Hi guys need some help on a 2003 toyota sequoia the headlights stay on after the truck is shut off and the key is removed the truck has auto headlights the switch is in auto mode but the lights stay on and kill the battery, I suspect bcm but can not find any i...
2008 Toyota Tundra SR5 5.7L Rear axle Bearing VIN: 5TFRV54108
Hello all...have this 08 Tundra in with rough noise in right rear axle bearing...found TSB replaced bearing with updated kit from Toyota that had a new backing plate seals o ring and bearing retainer as well as whats supposed to be a improved bearing. First on...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2006 Audi A4 Cabriolet 1.8L coolant system VIN: WAUAC48H46
First of all thanks for all that took time to reply.I did infact find 2 problems, first pressure tested coolant cap and it failed,this fixed my boiling over problem.Next now system held pressure found minor leak in heater core,replaced core cooling system is a...
2011 Audi Q7 TDI Premium 3.0L Service reset
Thank so much to all who replied. Sorry for the delay. My shop was closed from Christmas through New Years. Phillip had the data I needed to make the reset stick. What would we do without each other. IATN rocks again.
2003 BMW 330i 3.0L Engine VIN: WBAEV53473
Thanks to all who responded, you all said basically the same thing. That the oil filter housing was the culprit. It's a fairly easy fix but be careful to align the dowel rings or you'll have to do it twice like I did.
1988 Ford F-150 Custom 4.9L Excessive Emissions, Poor Idle Quality, Surge, Stall VIN: 1FTDF15YBJ
Thanks all for your help, unfortunately the customer needed the truck back for work and we couldn't conclude what was causing the surging idle. I did everything that was posted by all of you and everything checked out good. However we did find that the intake ...
2003 Ford Explorer Sport Trac XLS 4.0L Engine misfire VIN: 1FMZU77E03
Thanks to all who replied. This vehicle has been on the back burner for a while as the customer was in no hurry. We performed a running compression test and #4 cylinder was about 20 psi low. Next we pulled the valve cover off and inspected the #4 valve spring...
2005 Ford Expedition Eddie Bauer 5.4L oil pressure VIN: 1FMFU18505
Well the majority of you said REPLACE THE ENGINE. I told the customer and they have elected to pass on the engine. I told them if not for number of replies that said replacement is the ONLY option I could see spending the money and possibly getting some more l...
2008 Ford F-250 Super Duty XLT 6.8L filling gas tank VIN: 1FTSX21Y78
Thanks for all the replies. I got caught up in the Holidays,so finally got the vehicle back in the shop. I replaced the vapor canister and the evap. purge valve,cleaned the vent hose and all is well. The canister was full of dirt. Thanks again and happy New Ye...
2011 Ford Explorer XLT 3.5L speaker VIN: 1FMHK8D84B
I believe this issue was the ampliphier. I wiggled the connector and the noise immediately stopped. I put some diabolic elec. grease on it. haven't experienced it yet
2012 Ford Focus SEL 2.0L fuel tank VIN: 1FAHP3H23C
I gave the customer a price on a new tank and they decided they would just live with the problem for now. I received several good tips and saw other posts for problems with check valves in the tanks on other Ford vehicles. I am almost certain that would be the...
2009 GMC Sierra 2500 HD WT 6.0L brake pedal switch VIN: 1GTHK43K89
thanks for the replies. So after two after market switches i took the advice given and ordered a new OEM switch from the dealer and problem solved. Im suprised the aftermarket guys dont see all the warranty switches coming back and say hey lets make them actu...
2002 Honda Odyssey EX 3.5L Extended Crank VIN: 2HKRL18092
We got the Van back in and adjusted the valves. This has raised manifold vacuum to 16 IN. This has not yet solved the issue. I have the feeling that if I get the engine to 19 in like all the other decent breathing 6 cyl Honda engines, Most of the issues will b...
1984 Mercedes-Benz 500SEL 5.0L No Start, Poor Idle Quality VIN: WDBCA37A1E
Thank you all for the valuable input. I did remove both hard fuel lines to the control pressure regulator and blew them out with compressed air. I also put some air through the fuel supply and return ports after removing those lines and regulator. After this...
2002 Mercury Mountaineer 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4M2ZU86W32
put the plugs n and it came back missing again a day later. put the other plugs n the vehicle, buy customer request again, came back the next day, so he let up check it and I found out that the coil pack was bad, put one on and now the customer is happy and go... Trouble codes: P0300, P0301, P0303, P0305.
2007 Nissan Quest SL 3.5L 1st and 2nd gears VIN: 5N1BV28U37
Thanks for the replies!. We found a used "core" transmission close enough that they delivered for no extra charge. There had been a minor fire under the hood that damaged the trans. harness, but the part I needed was in great shape. There was no warranty on th...
1998 Saturn SL2 1.9L Engine VIN: 1G8ZK5276W
Upon doing the fuel pump assembly due to the inoperative fuel pump sender unit. Found gas tank was completely empty. Replaced fuel pump filled gas, car runs fine now. Thank you all for your help! Dead on with the fuel issue.
2003 Volkswagen Passat W8 4.0L ABS Module VIN: WVWUK63B93
Thanks to all who replied. Short story - correct login code - bad module. As was suggested I tried coding with my Snap-On Verus and had the same problem. I was just about to plug the old module back in and try to login when lo and behold what should drive in t...
2000 Volvo V40 1.9L no crank VIN: YV1VW2555Y
with proper wiring diagrams supplied here I was able to trace the problem to the 20 amp fmx fuse connection in the engine bay fuse panel. the fuse was good and tested good with a test light, however it had a poor connection on the power lead pin going to the ...
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