Automotive Technicians Technical Discussion and Fixes for Jul 2, 2014

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	Help Request	Answers
	2003 Audi A6 Quattro 3.0L Poor Idle Quality VIN: WAULT64B03 This 2003 A6 came in with a bad exhaust cam. I replaced the cams and all related seals/gaskets in the entire cylinder head, have no oil leaks and p0015 keeps popping up. The car idles perfectly until the fault code appears, but then either idles real low, arou... Trouble codes: P0015	View
	2004 BMW 325i 2.5L sec air injection VIN: WBAAZ33474 I have a p2761 sec air system code cannot find any good info to test this code we have Mitchell and napa fix I start motor vaccum gadge tee into check valve I get vac for about 3 sec then off even tho pump still runs for a min or two I cannot find any info for...	View
	2006 BMW 325xi 3.0L Charging VIN: WBAVD13566 Hey guys, So the battery voltage is staying around mid 13v and doesnt really change much if you idle up. The voltage will climb to 14 then fall to mid 13s again. He put a battery and a OE alternator in the car himself and we checked his connections and all a...	View
	1994 Buick Century Special 3.1L Coolant Gauge VIN: 1G4AG85M1R Customer complained of vehicle overheating according to temp gauge. He stated the gauge ran at the edge of the red and would drop to between half and 3/4 then go back to edge of red. I am able to read the temps on the Solus Pro and the radiator fan is engaging...	View
	1994 Cadillac Eldorado Touring 4.6L blower motor VIN: 1G6ET129XR I'm helping a friend at his shop. I'm an ex. GM guy with some Cadillac experience. Blower inop, Followed blower inop chart and went thought the on board diagnostic system. All on board seems normal with no ACP codes, hvac data looked normal and I did the overr...	View
	2004 Chevrolet Silverado 1500 LS 5.3L Poor Idle Quality, Misfire VIN: 2GCEK13T24 Customer brought the truck n and said it had a mis. scanned it and found p0101, p0300, p0171, u1000. it has just a slight miss at idle n gear with the a/c on. checked compression was good, checked fuel pressure was n spec. did some looking around and could onl... Trouble codes: P0101, P0300, P0171, U1000	View
	2005 Chevrolet Cobalt LS 2.2L emission VIN: 1G1AL52F25 power to ventconrol valve was stuck open	View
	2008 Chevrolet Tahoe Hybrid 6.0L Tdm Pcm VIN: 1GNFC13598 Hello Everyone have a head scratcher here. One owner long time Costumer, he lost his key the last (one.) Truck come on a hook .I had an old key cut ad to ignition switch started to program to the truck it did not learn the key. B3935 b3031 So I ordered new ke...	View
	2010 Chevrolet Impala LS 3.5L Rr Speed Sensor VIN: 2G1WA5EK2A Hi, everyone, car came in with abs and traction lights on. Upon comp. Diagnostic and physical tests notice damage to connector! so we installed a new one clear the code , test drive with live data , every thing looks good.she is back for same problem , test d...	View
	2010 Chevrolet Tahoe LS 5.3L Unknown VIN: 1GNUCAE03A This is a repeat customer of mine. Story goes, they had aftermarket fog lights installed and customer claims that ever since then, the vehicle has been acting up. Symptoms are like it loses they data bus somewhere. Guages start flickering and going crazy, all ...	View
	2010 Chevrolet Corvette 6.2L MIL Lamp on VIN: 1G1YD2DW2A this is my son-in-law's car. he bought it new in california even though he lives in illinois. they flew out and picked it up and drove it back. it was the only place he could find the car he wanted. since he got it he has had a series of electrical problems, n... Trouble codes: P0641 (5 volt reference circuit A)	View
	1999 Chrysler LHS 3.5L No Start, MIL Lamp on VIN: 2C3HC56G2X Hello fellow mechanics/technicians. I need some help on this one. The vehicle was towed into the shop for a no-start, engine will not crank condition. The owner said that he was driving the vehicle and the instrument cluster lost the temperature gauge, tachome... Trouble codes: P1695 (No Body CCD Bus Messages), P1686 (No SKIM Bus Message), P1687 (No MIC Bus Message Cluster), P0300 (Multiple Cylinder Misfire), P1698 (No Trans CCD Message)	View
	2000 Chrysler LHS 3.5L Headlights VIN: 2C3HC56GXY Good morning all, Had to post this Gremlin before diving in hoping someone has seen something similar. Customer states that sometimes when he pulls his car in at night with the headlights in the Auto position, the lights will stay on for a minute as it should...	View
	2002 Dodge Dakota SLT 4.7L #2 cylinder VIN: 1B7HG48N82 Hello collective, thanks for your attention on this 02 truck, dodge 4.7L with auto trans. towed in owner saw it overheating, not BAD on gauge, found failed radiator and no hydrocarbon reading in radiator. sat 4 days, drove in had hard misfire #2, oil in cylind...	View
	2003 Dodge Ram 1500 Laramie 5.7L Poor Idle Quality, Misfire VIN: 1D7HU18D43 Customer brought this vehicle in because it started running rough a few weeks ago. The ELECTRONIC THROTTLE CONTROL light supposedly came on and then the engine started running rough. They pulled over, shut it off and restarted it. The Light was OFF but still r...	View
	1995 Ford Thunderbird LX 4.6L Hesitation, Misfire, MIL Lamp on VIN: 1FALP62W0S This vehicle came into the shop for a check engine light. The code was a P0402 EGR flow at Idle. The car ran great otherwise. The first thing I did was to replace the old DPFE aluminum sensor with a factory plastic one I also replaced the solenoid as well. Aft... Trouble codes: P0402	View
	2000 Ford Taurus SE 4-Valve 3.0L No Start VIN: 1FAFP55S5Y Gentlemen, Got this lovely Taurus here stressing me out. Help!!! Intermittent no start on every 8th (approx) start. I found that COP power goes away when the no start occurs. There are no codes. CEL is illuminated at key-on, but goes out when cranking even du...	View
	2002 Ford F-150 XL 4.2L No Start, Stall VIN: 1FTRX17282 Hello guys.this f series iz driving me nutz ! it's an intermitten start and stall. Acts like fuel cut off however fuel pressure and volume remain steady at spec.will not idle regardless of throttle plate position somewhat ruling out iac motor. After a couple a...	View
	2002 Ford F-250 Super Duty Lariat 7.3L Cuts out VIN: 1FTNX21F22 We have this 7.3 that will shut down when it runs for anywhere from 5-20 minutes, at that point it will not restart untill it cools down again at 5-20 minutes.When it runs it seems to start up quickly and run smoothly.It has idled for over an hour, then we rea... Trouble codes: P1211 (ICP Injector control pressure not controllable pressure above/below desired), P1212 (ICP voltage not at expected level), P0381 (Glow plug indicator circuit malfunction)	View
	2004 Ford F-350 Super Duty Harley-Davidson Edition 6.0L Hesitation, limp mode VIN: 1FTSW31P34 Hey guys, I have a problem truck I have inherited from another tech that is getting the best of me. This ford has a very intermittent APP/TAC problem. Randomly the truck will go into forced idle/limp mode and throw P2104, and P2138 codes. The other codes I li... Trouble codes: P2104 (TAC system - Forced Idle), P2138 (Throttle/Peddle Position sensor/Switch D/E correlation), P2139 (TP/APP sensor/switch D/F voltage correlation), 2140 (TP/APP sensor/switch E/F voltage correlation)	View
	2004 Ford F-250 Super Duty Lariat 6.0L No Start VIN: 1FTNX20P74 Good day all, I have a real brain teaser here. I work on a lot of Powerstrokes and have never seen this situation before, hope someone else has! I was called out to troubleshoot a crank no start by a local shop who did the heads. As I understand it they com...	View
	2005 Ford Focus ZX4 2.0L Turn Signals/Brake Lights VIN: 1FAFP34N95 Greetings fellow techs, Why do these jobs show up at the end of the day? 2005 Ford Focus came in with a no turn signal/no brake lights complaint. When you turn the turn signals on in either direction, you can hear the flasher going but we get no lights in dash...	View
	2006 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53U36 Came back with 2196 2198 codes and misfires. Of course not missing here but customer stated no power shaking ETC. Found Front (bank 2) O2 switching much slower than rear bank 1. Replaced with NGK sensor (denso not available same day here) Switching better bu... Trouble codes: P0175, P2196, P2198, P0300, P0301, P0303	View
	2007 Hyundai Tiburon SE 2.7L MIL Lamp on VIN: KMHHN66F87 has po153 and po171 and po174, part throttle LTFT is at 20% I unplugged airflow meter and cleared fuel trims and found STFT fuel trim is now -10 to -15 if I plug airflow back in STFT stars adding fuel +20% car has aftermarket K&N air filter installed. has anyb...	View
	2007 Jaguar XK 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: SAJWA44B97 Month ago, had cel with evap and t-stat codes. Replaced parts as stated above. Customer complaint of misfire / rough idle on start up, for less than 30 seconds then will smooth out. No other driveability issues. Can only duplicate issue after car has been ... Trouble codes: P0316 (Misfire detected on start up), P0305 (Cyl. 5 misfire), P0307 (Cyl. 7 misfire), P0398 (Cyl. 8 misfire), P0300 (Random cyl. Misfire.)	View
	2008 Jeep Liberty Sport 3.7L Brake lights VIN: 1J8GN28K78 Okay this one has got me. When the ignition switch is in the run position, the lower mount brake lights come on but the high mount brake light stays off. Press on the brake pedal and the high mount lights up. Let off the brake pedal, the high mount goes off bu...	View
	2004 Land Rover Freelander SE 2.5L Door Locks VIN: SALNY22254 Truck came in with locking issue, doors wont unlock with remote or with the main switch, i cant even open the doors to check the wiring harness or the CCU behind the glove box,the driver side door will lock but wont unlock with the remote, any idea will be gre...	View
	1997 Lincoln Town Car Executive 4.6L compressor VIN: 1CNLM81W6V no ac has code p1469 low ac cycling period.worked all day yesterday lol.has power to cycling swith but no power to clutch.while looking at values with scanner the wot shows it to be on.tps values look good smoothand shows wot with throttle to the floor only.co...	View
	2007 Mazda 5 Touring 2.3L Cooling fan VIN: JM1CR29337 vehicle came in with no cooling fan operation found that cooling fan control module wasn't mounted properly causing module to over heat and cause fan to stop working. I replaced module(that coustomer supplied)and fan worked but stayed on all the time. Today ve...	View
	1998 Mercedes-Benz E320 3.2L Controller VIN: WDBJH65F7W Hi, I have replaced climate control head, blower was on high continuously and display was scrambled. I was not able to retrieve P1 and P2 values from old controller. Mitchell and the instructions for the reman controller are not clear as to the specific P1 and...	View
	2001 Mercedes-Benz E430 4.3L Starter VIN: WDBJF70J71 Hi every body, once again i need your help, i have a 2001 mercedes benz e430 that customer problem is not start, vehicle starts and runs all day long, but the very first start on the morning, doesn`t crank, ignition switch lights up all the instrument cluster ...	View
	2005 Nissan Altima S 2.5L Power windows VIN: 1N4AL11D15 Need help on this Nissan Altima. No power windows, no power locks with any button including with fob, and no electric push button trunk release. I started with power windows inop. and since BCM controls window motor power and grounds, I went to driver switch a...	View
	2005 Subaru Impreza WRX 2.0L Engine VIN: JF1GG29625 This is my sons car which lives in Denver. Called me a couple of weeks ago and said it started knocking when he pulled into work. Coworkers listened to it and said man you have a rod knocking. So I had the car shipped to me in Iowa. Started it up to drive it i...	View
	2009 Toyota Tacoma 4.0L fluid fill VIN: 5TEUU42N79 Just replaced leaky trans cooler tube and need to refill. All Data not clear about checking level running or not. There is a warning about turning active suspension off before running vehicle on lift but no mention in the fill procedure about starting vehicle....	View
	2003 Volkswagen Passat GLX 2.8L misfire on 3 and 5 VIN: WVWRH63B13 this car only acts up when its cold. After it is warmed up there is no drivability issues. When vehicle is cold the check engine light flashes and misfires from cylinder 3 and 5. I have replaced the entire ignition coil bus with all the coil packs. what else c...	View
	2009 Volkswagen Routan S 3.8L dash lamps, dead battery VIN: 2V8HW34159 hello everyone! this Routan came to me 6 months ago with a concern of inop cluster lighting when high beam lamps are on(at times-was difficult to duplicate). Ultimately, after a tech assist case with direct hit and no hard conclusions, i removed all connectors...	View
	1998 Volvo S70 GLT 2.4L MIL Lamp on VIN: YV1LS5644W trying to do drive cicles. drive veh and after 30 minutes ck eng coming back on whith codes po 171 and po172 Trouble codes: P0171, P0172	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1995 BMW 525i 2.5L auxiliary fan VIN: WBAHD632XS Thanks @ everyone who replied, everyone's advice was very helpful. The car is fixed, it was a relay for the fan that was functioning but was causing me the problem. it was shorted internally. So I ordered 2 relays. a lit green and yellow relay for the fan. A...	5
	1988 Chevrolet C1500 Cheyenne 5.7L Cuts out, Stall VIN: 2GCEC19K5J thanks all for the replies but after days of scratching head and getting frustrated, I found that when customer installed their own fuel pump prior to getting to my shop they had left a piece of the rubber hose from pump to module in the line and upon accelera...	30
	2003 Chevrolet Silverado 1500 4.3L Unknown VIN: 1GCEK14XX3 I HAVE ALWAYS PREACHED THINK SIMPLE & DO NOT LET YOUR EYES FIND THE PROBLEM PUT YOUR HEAD IN GEAR ALSO. SOME OF YOU WERE RIGHT THE PROBLEM WAS IN THE REAR DRIVE SHAFT JUST BECOUSE IT LOOKS GOOD DOESN'T MEAN IT IS. I THANK ALL THAT REPLIED TO MY HELP REQUEST TH...	24
	2006 Chevrolet Silverado 2500 HD LT 6.6L Cooling Systems VIN: 1GCHK23D26 God bless iatn and all its members.Special thanks too all that replied too my help request.The oil cooler was the problem,the housing with to bolts two nuts and two gaskets,however could not get it out by itself had to remove hole housing wasn't enough room to...	9
	2006 Chevrolet Impala LT 3.5L engine misfire at idle VIN: 2G1WT55K86 hey guys thanks for all the info. you really put me where i needed to be. preformed a running compression test. readings very low.also preformed leak down test. found 60%leakage on exhaust.tore done and inspected lifters and cam.all good. pulled intake and exh...	36
	2008 Ford E-450 Super Duty 6.0L Coolant VIN: 1FDXE45PX8 Thank you very much to everyone that replied to my post. We pressure tested the oil cooler in house and it passed our test. We wanted to be sure so we had a machine shop test it as well--it passed. Tore engine down and replaced cylinder head gaskets and fro...	15
	2002 GMC Envoy SLE 4.2L power loss in revers VIN: 1GKDT13S02 I'm calling this one fixed. I reveiewed all the replies and still found no problem. Range switch OK, no loss of any pids. After putting on other throttle body and still no codes, I decided to do a global reset on the vehicle (key off, battery cables clamped...	6
	1992 Honda Civic EX 1.6L MIL Lamp on VIN: JHMEH969XN ok so the issue with this civic turns out to be the new bosch oxygen sensor that the previous shop installed.i checked it a few time and after watching the trace for over 3 mins. at 2000 rpm it would occasionally hang high.i installed a new nippondenso 02 sens...	10
	2002 Honda Accord EX 2.3L Excessive Emissions VIN: JHMCG66092 thanks to all of you who responded to my cry for help. forgot to mention engine temp 92.c air temp @47c new exhaust manifold cause exhaust leaks. new fuel injectors . no change on the co levels. customer pick up vehicle heading to Honda. thank agian'	21
	2005 Jeep Grand Cherokee Laredo 4.7L service brake message VIN: 1J4HR48N65 Thanks for the help guys...The FDCM was replaced and symptoms have not reappeared. It was on backorder and did not need programming. It sure is nice to have this network to help justify a guys "gut feeling".	4
	1995 Mazda Miata 1.8L No Start, Poor Idle Quality, Cuts out VIN: JM1NA3536S after further inpections found that the cam sensor housing was 180 degrees off, the sensor fit in the cam right, but the housing was off. now that everything is lined up it runs great. thanks for all your help	6
	2000 Mitsubishi Eclipse GT 3.0L reverse VIN: 4A3AC54L5Y found that transmission was replaced by another shop befor it came to us. we advised the customer to have vehicle re flashed to fix issue	6
	2003 Nissan Altima 2.5L Hesitation, Cuts out, Stall VIN: 1N4AL11D63 The problem ended up being a defective MAF sensor. Never set a code and if you compared the MAF reading of the defective sensor to the new sensor you could not really tell a difference. Scope pattern looked almost identical as well. You can scope the new senso...	13
	2003 Nissan Altima 2.5L Surge VIN: 1N4AL11DX3 Thanks for the replies. I double checked the throttle body and did a smoke test to check for vacuum leaks. Without finding anything I started looking at the cam and crank sensors that Gordon and Kook suggested. Both looked great on my scope but decided to r...	5
	1998 Oldsmobile 88 Royale 3.8L No Start, Stall VIN: 1G3HN52K4W Thank you all for your replys. I should have been more clear on the ground side of the connector, The wiring was good when measured from bat + to ground side. I ended up having 2 issues, a bad new MAP sensor and an ignition module. Thank you again for all your... Trouble codes: P0108, P1106.	16
	2003 Toyota Tacoma Pre Runner 3.4L Misfire VIN: 5TESN92N83 I must day that we all fell quite silly. After a night of thought I decided that cleaning the fuel injectors and performing an upper induction service would be a good next step. That helped but not much. I noticed that the ECM never counted any misfires. A...	15
	2005 Toyota Corolla CE 1.8L Instrument cluster VIN: 2T1BR32E95 Good Morning. Customer has not return for further diagnostics on the the data lines but I feel that it is the module that is bad. As for the speedo inop one tech suggested the transmission speed sensor but it is to my understanding that when ABS equipped the v...	6

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