Automotive Technicians Technical Discussion and Fixes for Sep 27, 2016

Join Now

Prev	Professional Automotive Repair Technical Discussions for September 27, 2016 International Automotive Technicians' Network (iATN) - Members Only	Next
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for All Makes and Models

	Help Request	Answers
	2008 Audi A4 2.0L Camshaft Chain VIN: WAUAF78E48 Hello Audi Techs, This engine has a noise when running at idle at the back of the head that sounds like a chain noise. The engine almost sounds like a diesel but it isn't. This is a 2.0 liter gas engine. We removed the high pressure pump and the follower (buck...	View
	2011 Audi A8 Quattro 4.2L MIL Lamp on VIN: WAUCVAFD7B As stated p0492 and p0491, secondary air insufficient flow. I cleared the codes, performed output test of SAI pump, solenoids for combi valves (tested with vacuum as well), vacuum pump on the combi valves with pump running and I can hear and feel air in the ta... Trouble codes: P0492, P0491	View
	2012 Audi A7 Quattro 3.0L Epc warning VIN: WAU2GAFC4C Customer brought this car in requesting that the oil pressure switch be changed. The reason why is because the EPC light comes on under heavy load and says donot exceed 4000 RPM. The customer was told by an Audi dealership that the oil pressure sensor is a kno...	View
	2004 BMW X5 4.4i 4.4L oil leak-front of engine VIN: 5UXFB53584 Just want to get some ideas so I can at least prepare customer for possible charges. Came in with right valve cover leak. Replaced valve cover gasket. Cleaned engine and road tested. Still Leaking oil but not from valve cover as it did when brought in. Leak is...	View
	2010 BMW 335i xDrive 3.0L Foot well Module VIN: WBAWC7C52A Looking for BMW Techs and or Euro Techs with Auto logic that have experience with coding/programming. I have a 2010 E90 335xi that was improperly boosted at a body shop. When the car returned to us window operation, turn signals stopped working. Testing shows ...	View
	2010 BMW X5 xDrive35d 3.0L MIL Lamp on VIN: 5UXFF0C51A hi guys, thank you in advance , I got this bmw with 4687 throttle valve actuator, 4301 throttle valve actuator activation,4830 throttle actuator, trying to find information on how this throttle valve works with no luck as far as I know is for egr system purpos...	View
	2007 Buick Lucerne CX 3.8L keyless entry, tpms, remote start VIN: 1G4HP57247 Car came in for tpms lite on. There was 2 sensors in the tires and 2 valve stems. We installed 4 NAPA tpms sensors and now we can read them with the Bartec. We had no remote fobs so we got 1 and we also got the parts off the TSB for the RCDLR module and antenn...	View
	2009 Chevrolet Uplander LS 3.9L no 2-1 downshift and no overdrive VIN: 1GNDU23169 The customer complained of the vehicle starting off in second gear (will not downshift into first) and lack of overdrive. I have verified this on a road test. The transmission fluid level is good, the color of the fluid is good and there is no burned smell. I ...	View
	2010 Chevrolet Camaro LT 3.6L Cel VIN: 2G1FC1EV6A Car came in for second opinion. Was setting P0008 code. Dealer reflashed PCM twice and finally decided to advise timing chains. Customer came in and I verified the code. Scoped the cams and found they were off a little. Customer approved timing chains. Replace... Trouble codes: P0017 (Crank/Cam correlation B1 Sensor B)	View
	2012 Chevrolet Corvette Grand Sport 6.2L Remote fob VIN: 1G1YP2DW6C Vehicle is in for a new Fob. (Fob2) I accessed SPS programming, VTD relearn and followed the very vague steps in the manual but can not get the fob to learn. I have tried the good fob in the cupholder and out of the car. I have tried the key in the glovbox s...	View
	2005 Dodge Magnum SXT 3.5L MIL Lamp on VIN: 2D4FV48V25 Scoped data lines from PCM to FCM, never seen a loss of communication waveform. So we replaced and programmed the PCM thinking it was the source of the problem, but no change. Customer has already replaced FCM. Customer has relocated HVAC controls to center co... Trouble codes: U0141 (Loss of communication with FCM front control module), U0121 (Loss of communication with ABS module), P0571 (Brake Switch 1 Performance)	View
	2008 Dodge Sprinter 3500 3.0L Mechanical VIN: WDXPF44548 I have this sprinter here with a small oil leak. it is wet behind p/s pump and tensioner and wet on a/c compressor. I removed p/s pump and tensioner to try to find source of leak but cant pinpoint it... valve cover is dry and I can see what might be a weep hol...	View
	2003 Ford Ranger Edge 3.0L Poor Idle Quality VIN: 1FTYR14U13 ok,still working on this ranger.it came to me with a rough idle.so far I have removed injectors and had them cleaned-were very dirty! did a valve job,with new valves and seats-valves were bad-pitted replaced coil,plugs and wires cleaned out idle control motor ...	View
	1993 Geo Prizm LSi 1.6L No Start, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1Y1SK5360P We have tried 3 distributors in this vehicle and have same problem After hot soak or sitting overnight vehicle is hard to start and will hesitate and misfire under load. As you drive symptom becomes worse and the vehicle will die and not restart IT DOES HAVE S...	View
	2007 GMC Sierra 2500 HD Classic SLT 6.6L No Start VIN: 1GTHK23D27 This LBZ truck came in as a no start. Ran great the day before, didn't start in the morning. Scan data showed fuel rail pressure at 1 mpa when cranking. Combo Pressure gauge showed pressure bleeds off from 10 psi to 2 psi in 10 seconds which indicates an inter...	View
	1997 Honda CR-V LX 2.0L Door locks VIN: JHLRD1858V Easy fix as I just have several fatigued wires that have broken in the connector at the driver's door. The problem is that I can't locate a pin-out for this connector on Alldata , and since I have several loose wires I'd prefer not to have to do this the hard ...	View
	2006 Hyundai Sonata GLS 3.3L abs VIN: 5NPEU46F66 This car came with brakes locking up after driving around the block. We first replaced hoses because when you open the bleeder the brakes would release, that did not fix it. After further inspection we found that if you would remove the vacuum to the brake boo...	View
	2002 Isuzu NPR 4.8L Clutch VIN: JALB4B1412 A/c condensor was replaced due to damage. Our alldata gives no info on a/c system capacity or electrical diagrams. Charged 1 lb. Compressor clutch will not engage unlees i give it 12 volts thru a power probe. 10 amp fuse in the glove box is good, 4 wire pressu...	View
	2004 Jaguar XK8 4.2L engine VIN: SAJDA42C44 The car runs ok no miss fire except on start up when cold the reason being the intake is full of oil , it seems to have come from the PCV right bank (flying saucer) I replaced it with one from jaguar , still does the same thing , customers complaint is smoke o...	View
	2004 Jeep Liberty Limited 3.7L 2-4 shift VIN: 1J4GL58K64 Hello, I need some help from some tranny guys this is my first post on here. Got a 2004 liberty keeps going into limp mode and throwing code p0846 for 2-4 pressure switch sense circuit its intermittent. I put a solenoid pack in two weeks ago and it went a coup...	View
	1999 Mercedes-Benz C230 Kompressor 2.3L Electric Windows VIN: WDBHA24G7X Hello all techs i am a vw mechanic never worked on a mercedes with electrical problem. The problem with this car is the driver or both front windows stop working. They will only start working after i disconnect and connect battery.i do not know if this car has...	View
	2003 Mercedes-Benz SL500 5.0L abc system VIN: WDBSK75F53 Not as easy as ABC! I know better than to work on this system but I guess my arm was twisted.In past this ABC system has been repaired for leaks.Replaced parts included rear valve block and pressure regulating block behind left front wheel.These repairs were a...	View
	2006 Mitsubishi Raider LS 3.7L immobilizer VIN: 1Z7HC22KX6 vehicle was broken into lost keys replaced wcm and vehcile sets p0633 no start transoder coil not be exited checked with tool no coeds in wcm module pcm only has code p0633 have new key and new wcm tried prgraming and unsuccesful	View
	2000 Rolls Royce Corniche 6.8L airbag VIN: SCAZK29E0Y I got the car in for hydraulic work on the convertible top, after I was done with that the customer started adding things to fix on it... the airbag pretensioner light is on and he wanted them replaced which I did but that did not turn off the light. I cannot ...	View
	2006 Saturn Vue 3.5L no communication VIN: 5GZCZ63496 Hello to all and thanks for any help with this vehicle that you may have to offer as it has me completely stumped. Vehicle came in with an engine rattle and determined that the timing belt tensioner was failing, sold timing belt job. During timing belt replace... Trouble codes: U2105 (Lost communication with ECM), U2106 (Lost communication with TCM)	View
	1993 Subaru Impreza LS 1.8L computer VIN: JF1GC2549P Vehicle came in with a crank, no start. Customer was driving vehicle and all of a sudden the car shut off. Checked all fuses, checked timing belt, all good. Has no spark. Check engine light does not come on but checked E29 #22 it does have power going to it, s...	View
	2005 Subaru Outback R L.L. Bean Edition 3.0L Variable Timing Control System VIN: 4S4BP86C85 Customer complained of lack of power and pinging that was slowly getting worse. One garage tried to sell a new engine. I now have this vehicle as a project for my senior class to repair and have run into a road block. We are not sure what the cause of the valv...	View
	2007 Toyota Prius Touring 1.5L MIL Lamp on, master light on VIN: JTDKB20U57 Can't seem to find a good diagnostic tree for the P0A0F-205 code, Prodemand's diag tree goes in a circle, and states replace ECU. I want to perform some type of diag, before I will change an ECU. Vehicle will run and drive, just master warning light is on. Trouble codes: P0A0F, P0607 (control module performance in history)	View
	2012 Toyota Tundra 5.7L abs VIN: 5TFUY5F16C Hello all. This is the first time I have worked on this truck and met this customer. As mentioned in the repair history, I replaced the rear pads, rotors, rotated tires and installed tire pressure sensor. The customer states that ever since this work was done ...	View
	2003 Volkswagen Passat GLS 1.8L Engine VIN: WVWPD63B13 I have worked on many of these before, but never pulled an engine on one. It looks mostly straight forward (as much as any VW can be, anyway), but I am wondering how much trouble it is to get the trans separated from the engine? Does the cross member have to c...	View
	2004 Volvo S80 T6 2.9L SRS module VIN: YV1TS91Z04 Is it possible to replace the SRS control module of this vehicle with a matching used unit (not from an accident) or it has to be a new one and be programmed. ALL DATA indicates that only year model 2005 and newer need to be programmed. Thank you for your opi...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2004 Chevrolet Silverado 1500 5.3L Multiple sys VIN: 2GCEK19T54 I apologize for taking so long to close this. But as most of you suggested,... it was the ignition switch. Its replacement made all the problems go away Thanks again gentlemen. Andy [...]	12
	1979 Chrysler Scout ii 304CID rear servo 727 tranny I backed off the adjusting screw all the way--pushed the band close to the drum where the strut is with a screwdriver--with another screwdriver I pushed the strut to the side and it popped out easily and it went back in just as easy. thanks for all the help....	5
	2007 Dodge Caliber SXT 2.0L Coolant Tempature VIN: 1B3HB48B97 Found radiator to be plugged. Removed and replaced radiator all is good at this time, thanks for you help.	12
	2010 Dodge Journey SXT 3.5L Misfire, MIL Lamp on VIN: 3D4PH5FV0A pulled heads found found valve seat problem replacing heads. thank you for the 3 replies to my problem. Trouble codes: P0303.	3
	2003 Ford Ranger Edge 3.0L Poor Idle Quality VIN: 1FTYR14U13 ok,so this am I put a new coil on it ,1,2,3,plugs and wires.and it sparks great.only problem is it didn't do much for the rough idle,which is the primary problem.since I am only allowed 1 update,i will be reposting this problem,thanks for all the help, rick	26
	2005 Ford Expedition Eddie Bauer 5.4L rear of vehicle VIN: 1FMFU18595 Thanks for all the suggestions but we had visited all items. WE believe that the transmission is the source. The customer will likely have the work done & if she does, I will try to update this request.	9
	2007 Ford Explorer Sport Trac XLT 4.0L Battery Light VIN: 1FMEU51KX7 Thank for all who replied the Yellow wire on computer controlled alt Should have battery voltage engine running disconnected and charging voltage when connected when alt is working. Well it turns out that the new alt had the wrong regulator there are different...	4
	2011 Ford F-150 XL 5.0L check engine light VIN: 1FTFX1EF4B Well i want to thank every one for all help. we made a mistake when we were installing the cam sensors we reversed the intake and exhaust cam sensors on bank 1. We noticed when we pulled the sensors to ohm them out the exciter was hitting the sensor reversed ...	5
	2004 GMC Sierra 2500 HD 6.6L MIL Lamp on VIN: 1GTHC23164 EGR valve has been replaced in addition to the other items mentioned; currently road testing (]20 miles and still no DTC). Thanks again everyone. Trouble codes: P0404 (Exhaust Gas Recirculation A Control Range/Performance).	6
	2012 Land Rover LR4 HSE 5.0L No Start VIN: SALAK2D42C I scanned through the 20 other modules in this thing found one that was plausible, it was a code for the transponder key. I changed the battery for kicks and the truck has not acted up since. The customer had lost there second key so also got that replaced. If...	5
	2005 Mercedes-Benz E320 CDI 3.2L No Start VIN: WDBUF26J35 Hello I feel that what was done and the results are not a true fix. After sending the main computer in for repairs the company stated that there was nothing wrong with the computer. But while the computer was sent off the battery went dead, I feel the repair n... Trouble codes: 2521, 8 (starter control no start attempt without actuation), 2045, 1 (crankshaft position no signal).	3
	2000 Porsche Boxster Roadster 2.7L Temp Reading VIN: WP0CB2986Y We did do a few things that were suggested. We warmed the engine up and removed the spark plugs and put a pressure tester on the cooling system overnight, we didn't find anything in the cylinders nor did we find any indications of coolant getting on the spark ...	9
	2004 Toyota Sienna XLE 3.3L Hesitation, lack of power VIN: 5TDZA22C94 Well this one is fixed. Thanks to all who helped. Stephen from California nailed it. One knock sensor was buried under a mountain of coolant corrosion.I replace both knock sensors and subharness. DTC no longer present and power loss issue resolved. I have to a... Trouble codes: P0327 (Knock sensor 1 circuit low input bank 1).	7
	2001 Volkswagen Beetle Sport 1.8L Unknown VIN: 3VWED21C41 The fix ended up being the small by-pass hose as some of you suggested. When the tech was filling the system after replacing the thermostat, he could see air releasing into the coolant reservoir from that hose initially (bubbles in the coolant in the reservoir...	19
	2002 Volvo V70 X/C 2.4L Right Turn Signal VIN: YV1SZ58D52 I removed the Central Electronic Module and sent to BBA reman. There was no problem found with the module. I will be sending the Steering Column Control Module to them to have it tested. The way the turn signal switch connects to the Steering Column Control...	10
	2005 Volvo S40 T5 2.5L Air Condition VIN: YV1MS68265 Cannot duplicate problem in shop, have customer driving car & when air condition quits is to check to see if compressor is working by listening for compressor clutch noise when engages. have to wait for it to return. Compressor clutch has rust coming from it b...	6

(Also Available: All, Asian, Chrysler, European, Ford, GM.)