Automotive Technicians Technical Discussion and Fixes for Sep 2, 2014

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	Help Request	Answers
	2004 Audi A4 Quattro 1.8L MIL Lamp on VIN: WAULC68EX4 Hello Audi/VW techs...need your help. Car runs rough at idle with high short term fuel trims. Code PO340 is current. Recommended we replace camshaft position sensor. Did replace with Bosch one, code still remains and runs rough. I suspect acouple issues with t... Trouble codes: P0340, P0171	View
	2009 Audi A4 Quattro 2.0L MIL Lamp on VIN: WAULF78K49 The VAS 5052, using GUIDED FAULT FUNCTIONS, only gets one engine code: P2187 system too lean at idle. The VCDS (VAGCOM) gets P2187, but also gets U1008 - check DTC memory in CAN Gateway(J533) and P119A: fuel pressure sensor - malfunction. OBDII only gets one c... Trouble codes: P2187 (System too lean at idle)	View
	2006 BMW X5 4.8is 4.8L Self Leveling Suspension VIN: 5UXFA93586 This X5 was towed in with damaged rf spring (unseated from strut). Replaced front springs(arnott).Replaced inop air compressor. Aired system up and noticed Lf spring was all the way up. Full system pressure. Replaced accumulator valve assembly (stuck Lf valve)...	View
	2007 BMW 328i 3.0L l/r window innop VIN: WBAWL13577 Hi there, Convertible 328, left rear window down, will not operate. there's no noises when window lift button pressed. two codes set A6DA and A6DB-power window relay (closing and opening) drivers side rear. cannot find location/tests for this code/relay, any h...	View
	2009 Buick Allure CX 3.8L Windshield Washer VIN: 2G4WF58229 Tested switch for ground signal to bcm for washers, has ground and bcm shows it recieved the command on scanner also shows the pump commanded on with nothing coming out of bcm and wipers activate when washers are commanded at switch. With bcm unplugged i can r...	View
	2011 Buick Enclave CXL 3.6L driver seat heater VIN: 5GAKVBEDXB checked this one out for driver mirror inop up or down, found to have faulty master window switch, also asked to check seat heater-appeared to work but the led(s) out. ok, drove it and found the seat heater worked, needs a switch(seat heater). finished the dia...	View
	2007 Chevrolet Cobalt SS 2.0L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1G1AP18P07 Car came from another shop who replaced spark plugs and air filter. All appears to be done correctly check mass air flow sensor found sings of water intrusion replaced although looked ok in data. Coolant temp ok. compression 160 in all holes. The 02 switches b... Trouble codes: P1101, P0300	View
	2008 Chevrolet Silverado 3500 HD WT 6.6L Cooling system VIN: 1GCJK336X8 This truck only overheats when pulling a trailer. We replaced the fan clutch and fan shroud. No problems other than that. Wondering if anyone has come across this before or if you have any ideas what might be going on? Thanks in advance.	View
	1996 Chrysler Sebring JXi 2.5L Hard to fill fuel VIN: 3C3EL55H6T No DTCs or other symptoms present. This JXi Convertible has been difficult to fill with fuel for several years. We have tested the Evap vent system with no faults or clogs. The VENT TUBE inside the filler neck was once found kinked so we replaced the assembly....	View
	2005 Chrysler 300 C 5.7L Wheel Sensors Rear VIN: 2C3JA63H75 U1417,u1418 no up shift abs light on, no waveform from both sesors 12vts to both	View
	2008 Chrysler 300 Limited 3.5L timing cover VIN: 2C3KA33G58 car came in with complaint of coolant leak, pressure tested system. coolant is leaking from harmonic balancer. has anyone seen this before? water pump is driven by timing belt, could this be the weep hole or... any help would be great	View
	2007 Dodge Caliber SE 2.0L Ac Operation VIN: 1B3HB28B37 AC charge OK. No DTCs in any modules, no AC indicator light on Manual AC Control Head when button is pressed. PCM data shows 0 psi on AC High Side pressure but voltage reads normal for static. TIPM reads and displays both pressure and voltage of high side pres...	View
	2001 Ford Mustang 3.8L Cooling Systems VIN: 1FAFP404X1 Vehicle brought in for an overheat condition. Electric cooling fan works. Passed combustion test. (No rough idle, no smoke, no build-up of backpressure in cooling system.) Appeared had a flow issue, began with replacing OE thermostat. No difference. Suspected ...	View
	2002 Ford F-250 Super Duty Lariat 7.3L Door ajar light, door locks, dome lamps, Key chime VIN: 1FTNX21F82 Customer originally brought in truck for oil pan replacement. I did not drive truck beforehand except to bring into the shop. Removed engine and replaced pan (To remove these I remove core support and lift front of cab approx. 2"). Reassembled truck and all we...	View
	2005 Ford F-150 FX4 5.4L Unknown VIN: 1FTPX14545 Well I'm losing what little hair I have left over this truck. This truck came in with a burned up compressor clutch. Replaced the compressor and the orifice tube. The AC worked great for a couple of days. The truck came back with the AC not cooling. I noticed ...	View
	2005 Ford Five Hundred Limited 3.0L MIL Lamp on VIN: 1FAHP25145 This car come in with ALL the dash light on. Found NO communication at the DLC - the OBD 2 connector have power at pin 16 and gound at pin 4 and 5. I know their is a TSB about ICP going bad, BUT when I disconnect the Instrument Cluster and I still CAN NOT comm...	View
	2003 Honda Accord EX 3.0L Safety VIN: 1HGCM66553 Have a 21-80 code short to power in drivers seat belt tensioner. Cleared code, turned igntion on and srs light blinks for 6 seconds and goes out indicating no issue at that time. no codes or light until i drove it for about 15 min. Only got it to do it once. A...	View
	2005 Hyundai Tucson GLS 2.7L Safety VIN: KM8JN12D35 This Hyundai Tucson has an unusual problem. The brake lights work ok when the brake pedal is pressed. When the parking lights are turned on the brake lights(all three) also light up. WHEN THE BRAKES ARE APPLIED(WITH LIGHTS OFF) THE CLUSTER AND BUTTONS ALL ILLU...	View
	2006 Land Rover Range Rover HSE 4.4L Misfire Vehicle came in with complaint of slight shake at idle.Scanned for trouble codes and had none.Misfire counters not showing a miss but you can definitely feel one.Can hear vacume leak at pcv valve so we replaced the hose and took care of that but still has a sl...	View
	1995 Mercedes-Benz S500 5.0L camshaft timing VIN: WDBGA51E8S This 95 s500 came to us yesterday running terrible. Determined that none of the rt. bank cylinders were firing/contributing. Had good spark and injector pulse to the affected cylinders. Did compression test on rt. bank. had approx. 45psi on 1 thru 4. Got autho...	View
	2008 Nissan Altima 2.5L evaporator VIN: 1N4AL21E88 Thanks in advance for your help. On long trips the air coming from the vents drops significantly. The blower motor can still be heard working and the speeds on the blower motor also work. If the ac is turned off for 5-10 minutes and then turned back on, the ac...	View
	2008 Nissan Versa SL 1.8L clutch VIN: 3N1BC11E28 Good day techs. This Versa has had two clutch master cylinders installed. After a couple of weeks driving it will loose the pedal. There are no external visible leaks. Fluid is from the brake master cylinder and it never drops. Any ideas?	View
	2006 Porsche Cayenne S 4.5L battery VIN: WP1AB29P96 Vehicle has intermittent dead battery, it can go for weeks or a month with out any problem, then one morning the battery would be dead, jump start and then it will be fine again until next time. Dealership put in a new battery. We have checked current draw wit...	View
	2005 Saab 9-3 Arc 2.0L Starting VIN: YS3FD79Y35 Thanks in advance for reading this. On first start in the morning, or after sitting for an hour, this car is reluctant to crank. The starter will engage, and turn the engine slightly, then quit working. If one persists doing this several times, the problem wil...	View
	2002 Toyota Camry SE 2.4L MIL Lamp on VIN: 4T1BE32K32 Vehicle sets this code every couple days .P1346, It runs well. activated vvt and engine stalls. No sludge in engine. Timing marks look good. Mitchell doesn't give much test info. Thanks for your help Trouble codes: P1346 (varible valve timing circuit range perfomance)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2001 Audi S4 Avant 2.7L Cuts out VIN: WAURD68D01 Hello guys. I want to thank all you greatly. I am at this point quite frustrated with the situation at the shop. I went in today trying to keep on with the diagnosis of this audi. I explained to my boss about all the help I recieved from you at IATN. Told... Trouble codes: P1602.	11
	1986 BMW 535i 3.5L hydra boost OK guys.. I went and replaced regulator - booster and accum..have been running this vehicle for some now and also driving it to see what will happen..all is OK so I am going to assume that the regulatoer was sticking at times and over press system I have never...	3
	1997 Chevrolet S10 LS 4.3L Blower Motor/ABS VIN: 1GCCS19X7V after finding a good wiring diagram of the system was able to narrow it down to the ignition switch was only putting out 6 volts to the blower and abs. Thanks for all the replys.	13
	2005 Chevrolet Silverado 1500 5.3L rotors VIN: 1GCEK19ZX5 Hello and thank you for all the input. Brake locking in front problem, after more research I decided to think out of the box. So what I did was shim the master cylinder from the booster about 1/8" spacer was made and installed. Road tested fine after explaini...	12
	2008 Chevrolet Avalanche LS 5.3L No Start VIN: 3GNFK12318 This Avalanche is fixed! This Avalanche had poor terminal tension ckt 5986, terminal 17 at the FPFCM. That is the "wake up" signal from the BCM. All other terminals were good. The bulletin 07-08-49-018 Luis mentioned certainly could apply but I didn't find a s... Trouble codes: U0109 (ecm no comm with fuel pump module).	4
	2009 Chevrolet Express 3500 LS 6.0L Poor Idle Quality, Hesitation VIN: 1GAHG35K49 Thanks for all your replies. We looked into everything and we can only find that engine vacuum is insufficient, we believe this to be a mechanical failure but we have not yet gotten approval from the customer to continue diagnosis at this time. if they decide ... Trouble codes: P0106.	6
	2012 Chevrolet Express 3500 LT 6.0L Curtain Air Bags VIN: 1GAZG1FGXC I appreciate the help responses received from the 3 kind techs. Further thoughts on this leads me to replace the side airbag harness(s)to be safe one will be ordered. I further will replace the side impact sensors and test the old ones and check old harness fo...	5
	2004 Chrysler PT Cruiser 2.4L Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 3C4FY48B84 In the process of doing the compression and cylinder leak down test all were even at 190 psi and 5%-20% with 20 1/2 in vac at idle I am embarrassed to find two plugs were carbon arced, why this did not show up on my vantage when I checked the coil, I had good...	12
	2004 Chrysler 300M 3.5L No Start VIN: 2C3HE66G94 Found we where dealing with a second problem, found theft would set when car sat for 30 minutes or so, could lock and unlock vehicle with remote and it would start fine, cam code never came back after replaced sensor and never had issue again driving. customer... Trouble codes: P0340, P0344.	4
	2007 Ford F-150 XLT 5.4L engine oil presure VIN: 1FTPX14V97 Thank you all for responding but I was hoping for a fix of the fluctuating oil pressure which would then stabilize the oil pressure at a higher base pressure then the phasers would not flap back & forth. So The verdict is in & she is getting an engine.	16
	2008 Ford F-550 Super Duty XL 6.4L Split Radiator VIN: 1FDAF56R68 Installed new radiator, r&r thermostats(old ones were updated already however I changed them due to rubber coming off dampner plates). Removed degas bottle hoses and verified no restriction in venturi tee nor other connections. Test run engine to check for c...	4
	2008 Ford F-150 XLT 5.4L Poor Idle Quality VIN: 1FTPW14528 Thank you for taking the time to respond to my post. The responses varied from doing more testing to replacing parts to replacing the engine. (I suggest reading the posts for more detail) I had a talk with my customer and he is going to trade the truck whil... Trouble codes: P0022 (Intake cam position timing over retarded bank 2), P0316 (Engine missfire on startup).	15
	2001 GMC Yukon Denali 6.0L Front Differential VIN: 1GKEK63U61 Hi all, sorry for the delay on the post, the customer has to get his money together for the repair. We have come to the conclusion the transfer case is bad and will not replace it with a used part. We are going to replace it with an OE case. For the time being...	14
	2003 GMC Envoy XL SLE 4.2L vents VIN: 1GKE516S73 Well I received mixed replies about this system ranging from this is a normal condition to wrong mode door actuator to re-initialization , etc...The customer brought the vehicle back , complaining that while he was in Florida with his family the system behaved...	6
	1995 Honda Civic EX 1.6L Speedometer VIN: 2HGEJ1232S Unfortunately all suggestions were attempted and all were testing good. The only possible alternative is that the I.C. supplied by the customer was bad. Presently the customer has not returned for further testing. Sorry guys, but Thank You for your input !	8
	2005 Honda Civic Si 2.0L Air Conditioner VIN: SHHEP33585 HI, EVERY ONE: AS MOST MENTIONED THE PROBLEM WAS A/C. COMPRESSOR, NEW COMPRESSOR SOLVED THE PROBLEM. THANKS AGAIN MATT	13
	1990 Isuzu NPR 3.9L Brakes VIN: JALB4B1H3L FIXED! but first, thank all of you for taking time and giving suggestions and ideas, we really appreciate it. We tried the booster block off and that was scary lol; big difference so we ruled that out. So we stared at it for a little bit and suddenly i real...	13
	2002 Jaguar X-Type 2.5L ac VIN: SAJEA53D92 recharge ac again no improvement checked all servos ok at this time we think blend door has foreign object stuck in it need to tear down dash and inspect customer decline	8
	2004 Jeep Liberty Sport 3.7L no bus VIN: 1J4GK48K04 this one is finally fixed. I installed a reman pcm and the problem has not returned in two weeks now. I am calling this one done... thanks to all that responded	2
	2000 Mazda Miata 1.8L MIL Lamp on Well we ended up changing the cat with oem but code 420 came back. We changed the front O2 sensor as a tought and trouble went away. I gess it isn't always the cat that is bad! By the way we switched back to the ultra fit cat from walker and all is well even w... Trouble codes: P0420.	12
	1966 Pontiac GTO 6.4L tach SENT OUT TACH TO BE REBUILT BY COMPANY IN VIRGINIA STILL WAITING FOR IT TO COME BACK SHOULD BE ALL SET.THANKS FOR THE HELP.	19
	1992 Pontiac Bonneville SE 3.8L Poor Idle Quality, Stall VIN: 1G2HX53L0N Well this thing is finally fixed. It went for a 2 week period before this thing would act up again. When it finally acted up I was losing spark. So I started running down some of the known issues with this style of ignition system. I moved the connection at IC...	34
	2001 Volkswagen Passat GLS 1.8L Mechanical VIN: WVWPD63B41 Thanks for all the replies. I drove the car with an oil pressure gauge hooked up and the pressure was 20 psi at warm idle and 45 at 2000 rpm. So I pulled the chain tensioner and was surprised to see that it was intact, when several guys said that I would find ...	17

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