Automotive Technicians Technical Discussion and Fixes for Jun 7, 2018

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	Help Request	Answers
	2014 Audi Q7 Premium Plus 3.0L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: WA1LGAFE0E Problems all started after battery replacement although we did find or believed the crankcase vent valve to be bad even after replacement we still have a hard start issue and fuel trims are reading very rich at aprox.-20. Not sure if it matters but custome... Trouble codes: 00439, 00439	View
	2001 Chevrolet Silverado 1500 5.3L smog test "not ready VIN: 1GCEK19T61 Pickup not passing smog test, due to incomplete secondary air monitor. Multiple drive cycles run from cold start; all other monitors completed. Coolant temp normal, ECT, IAT matching +/-2 degrees on cold starts. Oxygen sensors at ~150mV on cold starts, with ai...	View
	2004 Chevrolet Trailblazer LS 4.2L No Start VIN: 1GNDS13S94 Hello to all. We have this trailblazer that has no communication with any module. I have tried them all. I have checked all fuses, ignition switch output, measured 7 volts on bus wire at dlc, tried different scanner, checked grounds to no avail. The cluste...	View
	2005 Chrysler 300 C 5.7L Starting VIN: 2C3AA63H55 car was towed in for no start. I am getting no signal from the pcm to the relay to ground it I can jumper 12v to the relay output and it will crank but will not start. has no spark or fuel. checked power and grounds for ecm both the tcm and the ecm sees th...	View
	2001 Ford Escape XLT 3.0L Shift VIN: 1FMYU04131 Hello; I have this 01 escape with a blinking OD/overdrive light blinks intermittently and will get stuck in 3rd gear.Has DTCs P0731, incorrect gear ratio#1, P0732 incorrect gear ratio #2. Wondering if this is tranny letting go. I read about replacing the s...	View
	2003 Ford Taurus LX 3.0L Misfire VIN: 1FAFP55U73 I have replaced plugs wires and coil come to find out the injector driver is intermittent with a noid light it will flash about 30 sec and then stop 13volts on the power side of the injector harness have you ever seen a driver do this or should I be lookin...	View
	2006 Ford F-350 Super Duty XLT 6.0L high pressure oil system VIN: 1FTWW33PX6 so the truck came in with a stalling hot condition. got the truck up to 180 degrees EOT and the truck would die hot. air tested the system and could hear an air leak on passenger side #7 injector o ring. checked stand tubes while i was there and they have ...	View
	1995 GMC K1500 Sierra SLE 5.7L Poor Idle Quality VIN: 2GETK19K6S Got this 1995 Sierra with a 5.7 litre that had heads removed and valve job done. It runs just a touch rich at idle. Enough to cause a little fishbite feel. Just barely noticeable. All spark plugs just a touch dark showing rich mixture. Runs fine otherwise,...	View
	2007 GMC Yukon XL 1500 Denali 6.2L automatic level control VIN: 1GKFK66817 I can not get the ESC module to run the compressor,even when commanded by the tech 2. Jumping the blue wire #9 at the ESC will turn on the relay and compressor runs. A second used ESC module with Same results and no codes.	View
	2001 Honda Civic LX 1.7L No Start VIN: 1HGEM215X1 Hello gentleman. I have this 01 civic that customer towed to me due to a non start condition so I gather some info and the previous owner had replaced cam and crank sensors about two years a go. this lady bough the car a few months a go and the car did not...	View
	2007 Mazda CX-7 Touring 2.3L engine VIN: JM3ER29397 While replacing the rear main crank seal, turbo, and oil pan gasket, we found a small spring and puck in the oil pan. The turbo being replaced was already a Dorman unit. We are very concerned where these pieces belong. The spring is 1/4 inch wide, about 3/...	View
	2009 Mazda CX-7 Touring 2.3L Poor Idle Quality, Fuel trims VIN: JM3ER29369 Replaced the turbo due to failure, leaking oil into induction system causing alot of smoke out of exhaust. Now the fuel trims are not good and they werent good to begin with. Right now the long term is at 0 and short term is setting at 25% posi. But as soo... Trouble codes: P2187 (Sys too lean at idle)	View
	2010 Mazda 5 Grand Touring 2.3L Front end VIN: JM1CR2W31A This Mazda rides and drives fine except when hitting bumps. After hitting the bump the whole front end shakes for a few seconds. I would almost call it a cowl shake. Front end components including engine cradle bushings and rack bushings appear fine. Tires...	View
	2013 Porsche Boxster 2.7L MIL Lamp on VIN: WP0CA2A8XD hey guys, this is my first stab at a boxster and I'm looking for advice on how to attack the two codes. first p1672, does anyone know where the fan is located and how to test it?? secondly p0456, id like to smoke the system but not sure where the purg... Trouble codes: P1672, P0456	View
	2009 Scion xD 1.8L alternator VIN: JTKKU10469 There are several hot wires to the alternator and one is not supplying power. When I power it with a jumper the alternator charges. The dead wire comes from a 10 amp fuse labeled gauge. This fuse, among several others is powered by the IG relay. The a/c is...	View
	2008 Subaru Tribeca 3.6L HVAC Control Panel VIN: 4S4WX91D18 Curious if any Subaru folks have run into these HVAC controls being blank. On this 08 Tribeca, the radio powers up (display in dash above controls) and you can change volume, station etc. with radio controls in the center panel, which contains the radi...	View
	2004 Toyota Highlander 3.3L False ABS activation VIN: JTEEP21A94 Goodevening Iatn. Ive got this Toyota here that intermittently when braking fairly hard and going thru the 30-15 mph area the ABS activates with a harsh grab and release that appears to be the from the LF wheel. There are no codes stored. When I scoped all...	View
	2013 Toyota Corolla LE 1.8L Misfire VIN: 5YFBU4EE5D This Corolla only has 35K miles on and runs well now but obviously had an issue during warm up(though the customer only noticed the light).Freeze data shows the code set @ 1885 RPM,104 F CTS and 15 MPH.The TSB #0107-14 makes me suspect that the valves fail... Trouble codes: P0300 (Random misfire), P0302 (2 misfire), P0304 (4 misfire)	View
	2006 Volkswagen Passat 2.0T 2.0L blower motor VIN: WVWAK93C86 Guys need some help on this one. Blower motor inoperative. I'm having hard time with wiring schematics and system operation. I have no power to blower. All fuses check good, blower and resistor good. Ground to blower good. This is a manual system. Contro...	View
	2006 Volkswagen Jetta 2.5 2.5L No Start, MIL Lamp on, Won't accelerate VIN: 3VWSG71K26 This Jetta actually drove in. The complaint was the Check Engine and EPC Lights are on AND it won't accelerate. Sure enough, push the gas pedal to the floor, it won't accelerate. So to see if anything would change, I cleared the codes. Now the damn thing w... Trouble codes: P0322 (Engine Speed Input No Signal), P0420 (Catalyst efficiency Below Threshhold), P0441 (Evap Incorrect Purge Flow)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2002 BMW Z3 Roadster 2.5L Cluster VIN: 4USCN33402 Have sent cluster to Programa in Florida. Never used them but hoping for the best. Thanks for all your suggestions. ECS tuning and some of the others that are "selling" new clusters are actually buying them from the dealer and marking them up. They don't actua...	7
	2004 Cadillac CTS 3.6L No Start VIN: 1G6DM57714 As the old saying goes dont judge a book by its cover. The car wasnt as bad as I thought. The three hack jobs I saw the first half/hour I was there were the only three done to car. And actual his hot wire to the starter helped me out. My boss didnt want the jo...	15
	2007 Chevrolet Colorado LT 3.7L Cooling Systems VIN: 1GCDT13E47 Doug [...] nailed this one - the fix was to replace the faulty coolant temp sensor! This vehicle only uses one sensor for the PCM input and for the temp gauge. It was skewed 15°F after an over night sit vs ambient air and inlet air temps. Never would have guessed ...	14
	2016 Chevrolet Malibu LT 1.5L Electrical VIN: 1G1ZE5ST2G I was able to attain a wiring diagram for this and check each wire on the 5V2. Each wire had a good ground and a good 5V signal. At this point I pulled up the signals on my scanner. Strangely the oil pressure would go from being around 30psi (normal) to 137...	7
	2003 Dodge Ram 1500 Laramie 4.7L Stall VIN: 1D3HU18N63 Thank you for the help, it makes sense now what and how it was happening. The problem was #7 ignition coil sending a high voltage spike back to the computer causing it to lock up. To diagnose the issue I used a 4 channel scope with channel one on the ASD sense...	5
	2016 Dodge Ram 1500 5.7L MIL Lamp on Thanks for all the replies, Charles nailed it. Under closer inspection, found one pin in the larger connector at base of column screwed up ... repaired that pin and "bada-boom bada-bing". Thanks again. Trouble codes: U0212 (lost communication), U0416 (invalid communication).	4
	1989 Ford Bronco Custom 5.8L Hesitation, Surge, Cuts out, Misfire VIN: 1FMEU15H1K Quick summary, all the basics were covered 3 times. Anyone who answered with check your timing and what nots missed the question. I needed to know if the motor was compatible so I could move on to find another issue. First I varified the correct spark plugs be...	22
	2005 Ford F-150 FX4 5.4L Bsm VIN: 1FTPW14595 NEW MODULE FIXED THIS, THE OTHER WOULDNT TAKE THE PROGRAM	8
	2009 Kia Rio SX 1.6L MIL Lamp on VIN: KNADE22349 Thank you for the replies. We tested everything that was recommended, everything looked normal. We then cleaned the throttle body as suggested and the code has not returned. Trouble codes: P0068 (MAP/TPS not corresponding).	6
	2004 Mazda 6 i 2.3L Poor Idle Quality, Hesitation, Cuts out VIN: 1YVHP84C34 Some great replies and I am always thankful the great help on here. We scoped the cam/crank relationship again and yes it was off. We then got the correct timing kit and tool and found that is was two teeth on the intake cam. There were several great lab scop... Trouble codes: P0340 (Cam Position Sensor Fault), U2516 (Can Wiring Open or Short), C1119 (TCS Transfer Case Input Signal), U1900 (ABS CAN Communication Bus Fault).	4
	1985 Mercedes-Benz 190E 2.3 2.3L Excessive Emissions VIN: WDBDA2405F THANK YOU , DID ORDER THE CATCO catalyst , discounted $ 78 , so $ 48 free shipping .supposed to be CARB legal ?? .could always make a lamp out of it .thanks again .	4
	1990 Mercedes-Benz 190E 2.6 2.6L abs VIN: WDBDA29DXL thanks guys you nailed it with master cylinder was able to bleed system road tested all good thanks again	6
	2007 Mercedes-Benz C230 Sport 2.5L 1-2, 2-3, 4-5, 5-6 VIN: WDBRF52HX7 Just want to make sure I give a big shout out to Marvin [...], Owner of RENN Motors, LLC Houston, Texas, USA who finally helped me get the TCM programmed and personalized to this vehicle. Marvin is highly knowledgeable on Mercedes and definitely knows what he i...	7
	2011 Nissan Sentra SL 2.0L No Start The car lot decided to go with used bcm which I was able to program with no problem. Get code out of bcm, used this code to convert into 4 digit theft pin code and all went well. A new one does require some programming that only Nissan scanner will do such as ... Trouble codes: B2195 (ID verification between BCM and PCM).	5
	2015 Nissan Rogue SV 2.5L Unknown VIN: KNMAT2MTXF Thank you all for the replies. The customer would not bring in the vehicle to complete further testing. She came in today due to not being able to open fuel door. I said "Oh by the way how is your a/c problem?" She said it has been spot on with no issues and f...	11
	2000 Oldsmobile Intrigue GL 3.5L MIL Lamp on VIN: 1G3WS52H2Y I removed the throttle body and found that the EGR passage is 100% clear. I did notice the MAP signal did not rise briefly during deceleration meaning the ECM did not perform a self test. I'm going to replace ECM and retest Trouble codes: P0401 (EGR insufficient flow).	11
	2009 Toyota Venza 3.5L VSC system VIN: 4T3ZK11A59 Thank You Everyone, It is fixed it was the Steering angle sensor which is part of the Air bag cocksprink. Sleiman [...] Thank You it was the sensor. Testing pin 5 & 6 for power was good pin 2 for ground was good and pin 3 & 4 had 60ohms telling me Can wires fr...	9

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