Automotive Technicians Technical Discussion and Fixes for Feb 20, 2015

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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for All Makes and Models

	Help Request	Answers
	1992 Chevrolet Corvette 5.7L No Start, Stall VIN: 1G1YY23P5N Hello everyone on iatn. I had this corvette towed in to me a couple of days ago and it was a no start. I had no spark and had no refrence low 8x signal coming out of the opti spark so I replaced the distributor with a reman unit. after that it would start but ...	View
	2000 Chevrolet Impala LS 3.8L No Start, Stall VIN: 2G1WH55K2Y Vehicle presented as a cranks ok, no-start. Acts like it's in anti-theft mode, "Security" message displays until start attempt, then goes out (normal operation). Will run for about a second on initial start attempt, then stall out and only crank until the key ...	View
	2002 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNDS13572 This car came to the shop in limp home mode with the service engine soon and the reduce power lights on the scan toll read P1275 accelerator pedal position sensor 1 circuit. All pedal wire continuity tested positive. Both sensors reference voltage reads 7.6v i... Trouble codes: P1275 (Accelerator Pedal posotion circuit -sensor 1)	View
	2012 Chevrolet Sonic LTZ 1.8L HVAC Blower Fan VIN: 1G1JE6SH8C Customer has to put on 40 to 60 miles before it acts up. Blower fan is inoperative regardless on speed position. She says it seems to act up more the colder it is outside, like below 0. When it acts up, she waits approximately 5 minutes, while still driving an...	View
	2000 Chrysler 300M 3.5L Excessive Emissions, Misfire, Long crank time VIN: 2C3HE66GXY Recieved this car with the 2 codes due to mileage i replaced the 3 sensors atfer reading the responses. The codes came back as soon as the car is started the symtoms are a long crank time,rough idle and excessive tailpipe emmisions [ strong exhaust smell]. Sta... Trouble codes: P0340, P0112	View
	2001 Dodge Ram 2500 5.9L No Start, no communication VIN: 3B7KF26661 Good morning, I have here here this dodge that refuses to run. Scan tool won't communicate with either ecm or pcm. When I first started looking at it the wait to start light would blink, then became inop. altogether. According to customer, the wait to start li...	View
	2013 Dodge Grand Caravan SE 3.6L transmission VIN: 2C4RDGBG0D customer was driving when check engine light came on and trans went into limp mode. codes recorded were 732a, 841, and 882. cleared codes and drove 40 miles, no codes and no symptoms. where do I start ?	View
	2001 Ford F-150 Lariat 4.6L Misfire VIN: 1FTRX17W01 Customer had to take truck for the weekend. Trying to get a plan for next week .. under cylinder contribution testing with scanner.. In park or neutral there is no problem.. Put the truck in gear and #8 cylinder drops to -14 but does not do it all the time.. T... Trouble codes: 304 (308 -), 308	View
	2003 Ford F-250 Super Duty Lariat 7.3L ipr VIN: 1FTNW21F53 installed manual gauge on high oil pressure pump on one line and caped off the other cranked will only build low oil pressure. watched scan data at same time ipr duty cycles hit 64%, desired icp does what low pressure does and so does actual icp, installed kno...	View
	2009 Ford Taurus SEL 3.5L Engine Codes p0018 and p0021 shows on scanner, sometimes engine dies, starts no problem, I opened front of engine to check if timing was of by one tooth, but everything seems ok. Any help will be apreciated...	View
	2005 GMC Yukon XL 1500 SLE 5.3L Cooling Fans VIN: 1GKFK16T25 Now the cooling fans run all the time when the engine is running, they are on high speed, no codes. I suspect it is to do with the A/C high pressure switch, reads 3.3v running, jump red to gray reads 5v. Black wire shows no continuity to ground, I see it goes ...	View
	2009 GMC Sierra 2500 HD WT 6.6L Mechanical VIN: 1GTHK49689 truck came in the shop running very rough and smoke out of the exhaust raw fuel it had misfire on cylinder 5 cancel the out injectors the only one that made a difference was cylinder number 5 to make a long story short phone date then push rod on the exhaust s...	View
	1998 Honda Accord LX 2.3L engine VIN: 1HGCG5643W So, it needs to be warm and idle at normal warm RPM. If you snap the throttle in neutral or park it will clunk. Sounds like a tranny mount to me. If you put it in reverse and rev it off and on, there is a vibration coming through the floor. In drive no vibrati...	View
	2002 Honda Civic LX 1.7L Pcm, Immobilizer, Fuelpump VIN: 1HGES165X2 No cominication from dlc i can jumper pcm relay and fuel pump relay and get to start with starting fluid but still no fuel pump when i jump it i also get the imobilizer and check engine light i need help finding a possible ground fault or a bad pcm?	View
	2009 Infiniti G37 X 3.7L heater VIN: JNKCV61F09 The car arrived with no heat from any of the vents. The blower motor works as designed. The cooling system is functioning as designed. The cooling system is full. The self-diagnostic tests were run on this dual mode climate control system. There were no codes ...	View
	2006 Jaguar XJ8 4.2L AIrbag VIN: SAJWA79B06 This is a crazy problem, we got this car from another shop who waved the white flag, airbag fault B2291 symptom 30, by definition "Generic OPS Module Fault", the passenger presense system uses four spatial sensors that sense the position of the passenger seat ...	View
	2000 Jeep Grand Cherokee Limited 4.7L alternator VIN: 1J4GW58N6Y Customer complaint, check gauges. Discovered charging system is not working. Tested ckts at alternator-OK. Replace alternator with new MOPAR. Vehicle didn't charge instantly but did start charging after shut off and restarted. Worked fine after that. Released ...	View
	2005 Nissan Maxima SL 3.5L No Start VIN: 1N4BA41E25 I have Tested every CAN line, no shorts no broken wire. Tested the grounds and powers I believe to everything. I can see on my scanner all but the ABS unit which I believe is bad, it has power , grounds, ignition signal. The Unified AMP was replaced at another... Trouble codes: P1212 (Tcs), U1001 (Can ecm), P0452 (Evap), U1000 (Meter), P1762 (Electric Throttle), U1000 (Meter)	View
	2009 Toyota Corolla S 1.8L starter VIN: 2T1BU40E09 Starter stays engaged after car has been started. Only happens after been sitting in cold weather? Relay? Starter? Can someone set me in right direction. Codes in memory are a p0138 rear o2 sensor voltage high and p0607 ecm control module performance. Dont see...	View
	2000 Volkswagen Beetle GLX 1.8L ABS Module VIN: 3VWDD21C1Y Please help me out in this, and thank you in advance.This is my brothers car, and I don't have access to a repair data base at this time. As I stated, he was driving vehicle, applied brakes, and both brake warning and abs lights came on. I hooked up my Modis, ...	View
	2005 Volkswagen Jetta 2.5 2.5L ecm VIN: 3VWDF71K25 I have no MIL lamp, no start and no communication with the ECM. Tested for power at terminals 62,21 and 3 at the ECM. Pulled back all of the insulation on that loom to check for broken/corroded wires (none found). I have no power at terminal 3 the red/grn wire...	View
	2012 Volkswagen Beetle Turbo 2.0L No Start, Misfire VIN: 3VWVA7AT5C #1 cylinder was misfiring upon first inspection. p0301 p0303 codes were present. Switched #1 coil to #2 cylinder and still no spark from coil. Then again switched it to #3. Which originally had spark. Now vehicle doesn't start or have spark from any coil. Igni... Trouble codes: P0301, P0303, P0300	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2000 Chevrolet C2500 5.7L No Start VIN: 1GCGC29R5Y Thanks for all the helpful replies, got back to this one late and as many of you suggested the coil just poop out. New coil puts out 40-50+ kv on start up and now has the blue spark (wow) These techs got it William [...], ...	17
	2002 Chevrolet S10 LS 4.3L tcc solenids VIN: 1GCDT13W52 My problem got resolved by replacing the TCC,PWM and pressure control solenoids. But when doing so I did not noticed that 3 of the pins from 20 pin connector at the transmission had slightly come off/broke from it and caused a different code. I crossed t 2 o...	8
	2007 Chevrolet Silverado 1500 Classic LS 4.3L No Start, no crank VIN: 1GCEC19X17 After a lot of waiting for the issue to present itself again, the vehicle finally wouldn't start again. I had a Fluke 97 lab scope hooked up to both high speed data communication lines. The HS+ showed virtually no signal with a few negative spikes. I had a fel...	10
	2005 Ford F-150 FX4 5.4L No Start, no crank VIN: 1FTPX14555 sorry for taking so long to close this request had customer take this vehicle to ford dealer.we expected that the central junction box was faulty.thats what the dealer found along with the fuel pump module.. Trouble codes: U1950.	21
	2011 Ford F-150 XLT 3.7L no radio, no heater VIN: 1FTMF1EMXB found out someone decided to troubleshoot the vehicle on there own and they pulled out a plug on the bcm. reattached plug and reset tpms and everything worked after that. thanks for the help that you gave me.	4
	2005 Jaguar S-Type Sport 4.2L No Start, Misfire, MIL Lamp on VIN: SAJWA01U35 Believe or not, we end up did a fuel injection pressurized injector cleaning according [...] TSB & customer has pick up the car for 10 days without any complaints. We will call this one fix, thank you again for all the inputs.	11
	2005 Jeep Liberty Sport 2.8L Excessive Emissions, Black smoke VIN: 1J8GL48575 Ok so I pulled the EGR Valve off and checked it. The valve was sticking I cleaned it and it was not longer sticking then I put penetrating oil in it and let it sit to see if the valve was leaking and it was. I got a new valve (from napa re-boxed factory one) I...	9
	2007 Lexus IS250 2.5L Starting Well she's fixed, Dean and Allen got it right, it was the pressure sensor shorted or open. I was not aware of how this system worked but after doing some homework (research) I finally understood how the dual injector system worked, it became clear why the car...	9
	2001 Mazda MPV DX 2.5L Hesitation, Surge VIN: JM3LW28G81 After verifying PCM power and ground circuits, locating the DLC "ten" terminal and verifying that circuit, I condemned the PCM. Customer had no interest in a new unit due to cost restraints, a used PCM was installed, all is well. Actually required two differen...	5
	2007 Mercedes-Benz GL450 4.6L Aitmatic VIN: 4JGBF71E17 Justin was correct. found the socket frozen up on the sensor rod and it was bent a little. Looked like it was supposed to be that way but needed to be straighter then it was.	5
	2005 Saab 9-5 Arc 2.3L Mechanical VIN: YS3ED49A75 We end up replace 3 more sub frame mounts & reposition sub frame & vibration decrease about 70% compare [...] the vehicle first come in. Customer think it is in a acceptable range & we will call this is a fix, thank you again for all the inputs.	9
	2007 Toyota Prius 1.5L dashboard hi techs ,i can close this and say its a fix cause at the end i found out that it was the dc/dc 100 amp fuse that was causing all this and everything is back to normal now ,i d like to thank all of u that took time and replied to me , i really appreciate it,ch...	7
	2008 Toyota RAV4 3.5L Srs VIN: JTMBK33VX8 Thanks for the help with this vehicle. I called Toyota and they will honor the recall on the spiral cable and a few other ones the owner never had done. Thanks again!!	4
	2008 Volkswagen Touareg 3.6L Clock VIN: WVGBE77L18 OK so my company jump started the car, customer usually goes to another shop you can see from above from there it went to dealer both other shop/dealer and Mike responded with needs new cluster there is no other power source if the dash works the clock has p...	6

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