Automotive Technicians Technical Discussion and Fixes for Mar 29, 2016

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	Help Request	Answers
	2004 Acura MDX Touring 3.5L engine miss VIN: 2HNYD186X4 hi guys this auto came to us for some service mat.we found a engine miss 4cyl ck plugs not bad change ck coil pkg ok ck inj change coil #4and #5 no change.ver vale timing we have had problems on soom other cars causing mull engine miss fires? car sat out in co...	View
	2011 Audi Q5 Prestige 3.2L No Start VIN: WA1WKAFP4B hello,the problem with this car is that costumer couldnt get the car to start. costumer cranked it so many times until batery died. it was brought on tow truck. when i got it to my shop i recharged the batery, once the batery was in running conditions, it only... Trouble codes: P0159, P3045	View
	1998 BMW Z3 Roadster 2.8L MIL Lamp on VIN: 4USCJ3326W car has had intermittent check engine light on for years...same code present. we replaced the charcoal canister valve a couple years back. She now wants to "fix" the problem. I can operate the valve at the charcoal canister via the autologic. It cycles on and ... Trouble codes: 253 (shut off valve)	View
	2006 BMW X5 4.8is 4.8L Misfire, MIL Lamp on VIN: 5UXFA93596 Need some help on this one, I got a x5 with a v-8 that starts missing after it warms up, about when it would go into closed loop. The computer will shut down the injector after a little bit, cycle the key and will be ok for 30 seconds and start to have a sligh... Trouble codes: 29CC, 29D0, 29C1, 29F4	View
	2005 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 3GNEC16Z45 hello all, i am checking this suburban for for a large evap leak, the canister purge valve had been replaced from another shop. i did a smoke test and found that the new valve is leaking as well. i used a scan tool to activate the solenoid and it still has a s... Trouble codes: P0178 (Fuel composition sensor circuit low frequency), P0327, P0455	View
	2006 Chevrolet C4500 Kodiak C4U042 6.6L Abs module VIN: 1GBE4C1216 Abs and Brake lights on followed flow chart for code c0550-(ECU malfunction. Cleared dtc and dtc returned. flow chart suggests replacing EBCM. We replaced EBCM set up new module for correct tire size, wheel base, etc. Code c0550 returns flow chart is very vagu...	View
	2007 Chevrolet Silverado 1500 Classic LT 5.3L right front fog light VIN: 1GCEK19Z87 So I have this 07 Silverado 1500 Classic Extended Cab Short Box 4WD here to go through a list of things that I found when doing this prepurchase inspection. The truck has some miles on it but overall in pretty decent condition. I was at replacing the right fr...	View
	2004 Chrysler Crossfire 3.2L Trans VIN: 1C3AN69L44 Thanks to all who reply.Car came with code p220a n2-n3 speed sensor mismatch. I replaced the conductor plate with new(not a oem part). road tested car all was well.Customer returns a week later and states that car will not shift at times(limp mode)and that the...	View
	2002 Dodge Ram 1500 Van 3.9L No Start VIN: 2B7HB11X12 Customer stated that the vehicle would die every once in a while but would always start back up. When it would die it would back fire through the intake. Last October it dies and wouldn't start back up. After he replaced everything known to man he brought it t...	View
	2004 Ford F-250 Super Duty XL 6.0L long crank VIN: 1FTNF21P24 Truck was towed in customer complaint low oil pressure indicated by gage and long crank. Confirmed complaint checked oil pressure with mechanical gage 10 psi at idle 35 at 2000 rpm. My gage may be off a little it only takes 8 psi to set instrument gage to 1/2.... Trouble codes: P2291 (injection control pressure low when cranking)	View
	2005 Ford Taurus SEL 3.0L Surge VIN: 1FAFP562X5 Intermittently, car will surge and not idle down pulling car uphill @ 30-40mph. Shift to neutral and idle speed will slowly come down from the 3500 rpm range. EGR functions, DPFE readings and commands all normal, has no p/s switch, and a/c idle up is normal. W...	View
	1999 Honda Accord LX 2.3L Mechanical VIN: 1HGCG324XX car came with high miles and damaged engine low compression oil use,we recommended a low mileage used engine which we installed runs great except at idle when you put in gear it vibrates very bad we replce all engine mounts, iac motor distributor still vibrate...	View
	2003 Honda Accord EX 3.0L Power Windows VIN: 1HGCM82633 2 DOOR COUPE MODEL.( Pro demand does not supply a wiring diagram for a 2 door model) Customer complaint that the window on the passenger door would not operate. tested the switch and found the switch to be operating properly. switch assembly has its own micro ...	View
	2012 Hyundai Sonata GLS 2.4L No Start VIN: 5NPEB4AC3C No codes. No communication with PCM. Can communicate with other modules. No spark, No noid pulse, no MIL. No power at ignition coil fuse. Relay that powers fuse does not close during crank. Jump relay and coils get power but still no communication and no start...	View
	2009 Jeep Liberty Limited 3.7L battery VIN: 1J8GN58K39 I have a parasitic draw I cannot find. Much help is appreciated. I currently have unplugged the alternator, PCM, ABS, instrument cluster, driver seats, passenger seats, cigar lighter in front, HVAC controls, blower motor, driver door window motor and switches,...	View
	2011 Jeep Patriot Sport 2.4L compressor VIN: 1J4NT1GB7B replaced comp,cond,exp valve flushed filled.checked volts on compressor wire when disconnected 6 v checked volts when connected to comp solonoid, .04 v same volt reading when connected to old selonoid .04 v. any help appreciated thanks in advance . no pressure...	View
	2005 Lexus GX470 4.7L Ride Control VIN: JTJBT20X55 Hello iatn, car came in with bumpy ride, we found the shocks rusted and in really bad shape. After replacing all 4 car will not either lower or raise. I do hear the pump running but nothing happens. Verus shows a couple codes that l can't find any information ...	View
	2000 Lincoln LS 3.9L abs VIN: 1LNHM87A7Y hi everyone in iATN. we have this Lincoln with an issue. new pcm, jumper wire from dealer as there is a tbs on it was replaced or done. this car been at the ford dealership for who knows how long...too long and they cant fix it. codes under ABS C1805 mismatche...	View
	2007 Mazda 6 i 2.3L Hesitation, Cuts out, Misfire VIN: 1YVHP80C37 After replacing crankshaft due to a spun main bearing, the vehicle has a random misfire under heavy acceleration/load. Idle's great, and while in neutral if you accelerate the engine sounds solid. Replaced spark plugs. Swapped coils 3 & 4 around, and nothing c... Trouble codes: P0300 (Random Misfire Detected)	View
	2007 Mercedes-Benz SL600 5.5L Misfire, MIL Lamp on VIN: WDBSK77F37 Previous customer but first time in with this car. Two problems #1) Cylinders #1 to #6 shut off. #2)Message on instrument cluster relating to shut off of electrical convenience features. Problem #2 turned out to be the trunk battery having 5 volts and would no... Trouble codes: P0300, P0301, P0302, P0303, P0304, P305&	View
	2007 Mercedes-Benz E350 3.5L evaporator VIN: WDBUF56XX7 Thanks for your help once again. This car came in with the ac not working. No freon in the system. After clearing the code in the ac system for low system charge the system took freon & is cold. Soon after the evaporator drain tube had the dreaded dye coming o...	View
	2009 Mercedes-Benz SL63 AMG 6.3L left seat VIN: WDBSK70F59 Hello, I feel like a dummy...tring to diag heated seat inop left side, right side heats properly. Fuses test good and have power. Looking at the wiring diagram via identifix and the bottom element looks like a typical 2wire heating pad. Wirng diagram shows a 6...	View
	2009 Pontiac G6 GT 3.5L delay VIN: 1G2ZH17N19 I have a bit of an unusual problem on this car. When wipers are in delay mode they will move an inch or so and stop. On the next pulse they will do a complete sweep, next pulse they move and stop, following pulse full sweep. Checked the BCM for codes, none. In...	View
	2013 Toyota Highlander 3.5L compressor VIN: 5TDZK3EH6D I appreciate everybody's help in advance. I got 2013 highlander the compressor is not kicking. I hooked up to my snap on scanner , when I turn on the A/C button, the a/c request on the scanner shows "off". I got one code B1479, I don't wanna start changing par...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2011 Chevrolet Express 2500 6.0L No Start VIN: 1GCWGGCG6B The vehicle was sent back to the fleet operator to replace the engine. I was told after engine replacement the vehicle started with cam sensor connected and no dtcs set. I was told cam/crank marks lined up, chain and tensioner looked ok. Unfortunately the engi...	6
	1999 Dodge Intrepid 3.2L No Start, Stall VIN: 2C3HH56J7X I caught the fuel pressure bleeding down a couple of times rapidly , so I pulled the upper intake to see if the injectors were leaking . I could see the lower intake gaskets hanging in the intake ports , but no injectors leaking , so I replaced the lower gaske...	15
	2005 Dodge Durango SLT 4.7L Poor Idle Quality, Hesitation, Stall VIN: 1D4HD48N15 so th final fix was a new PCM. After a reflash didn't help and all other resources were exhausted we decided to replace the PCM. After replacement an lengthy test driving found all is good. Thanks for al the helpful replies.	17
	2008 Dodge Charger R/T 5.7L Electronic VIN: 2B3KA53H38 Sorry about the late reply. What Mitchell says is you only need to drive cycle the trans using the outlined procedure. The problem was it was in limp-in so I couldn't drive cycle it. Something was wrong beyond programming so they sent it to Chrysler dealer. Th...	7
	2000 Ford Excursion XLT 6.8L fuel gage VIN: 1FMNU40S5Y First I have to thank who respond my help , this car got fix and problem was wrong pcm, this car was federal car and looks like they don't have monitoring system on o2 sensors but some one did replace the pcm with California pcm and California pcm need fuel le...	10
	2002 Honda CR-V EX 2.4L Cat. monitor VIN: JHLRD78862 we replaced the rear(down stream) 02 sensor and the cat monitor reset. The sensor seemed to be switching normally but there were times when it acted abnormally. it was a shot that payed off.	8
	2001 Infiniti Q45 4.1L Poor Idle Quality, Misfire VIN: JNKBY31A41 Thanks to all who responded. Turns out as we all suspected the owner did not give me the whole story. When he said it was running smooth this is the smooth he was talking about . So after running another power balance test with my scanner I noticed cylinder 8 ... Trouble codes: P0400, P0303.	8
	1997 Jaguar Vanden Plas 4.0L Unknown VIN: SAJKX6242V Happy to say that a used TCM was the fix. Plenty of those puppies for sale on Ebay. Thanks All!	6
	2010 Land Rover Range Rover Sport Supercharged 5.0L Warning VIN: SALSH2E49A Thanks to all who replied. The fix was a bad connection at the battery monitoring module. A two wire weather pack connector that plugs in at the neg battery cable end. Repaired connection, cleared all codes and all is well. Even the smart key came back to life...	1
	2005 Nissan Murano S 3.5L Oil consumption VIN: JN8AZ08W35 thank you to all that replied. The customer approved 5 hrs tear down however this may be a battle between the extended warranty company and the customer. I believe the root cause is lack of maintenance.	15
	2003 Pontiac Grand Am GT 3.4L No Start Would like to thank Howard and Zach for their responses. That is the exact information I was looking for. I knew the cause of the blown fuse, (a/c clutch) and was able to repeatedly duplicate the no start on a cold morning. I knew the vehicle was good to give ... Trouble codes: P1546.	13
	2001 Volkswagen Jetta GLS 2.8L Serp Belt VIN: 3VWSG69M71 I found that if I pulled in-and-out on the free-wheeling pulley of the alternater it will move 1/4 to 3/8 of an inch. According to vin, there are 12 possibilities on the alternator and 4 on the one-way clutch pulley. I plan on getting the alternator out toda...	13
	2003 Volkswagen Golf GTI 1.8T 1.8L 2-3 shift VIN: 9BWDE61JX3 Sorry for being so late in posting the fix. We replaced the valve body and that fixed the problem. Thanks once again for all the help. Once again IATN is still the most valuable tool in the shop!!!	5

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