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Prev Professional Automotive Repair Technical Discussions for January 2, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
2000 Audi A6 Quattro 2.8L rear O2s VIN: WAUEH24B3Y
Customer came in for diagnosis with codes P1198 and P1199- Bank 1 and Bank 2 heater circuit malfunction. Customer was all over the place when describing what and when things were done and it only got worse when I asked questions, but here's what I was told: Cu...
2005 BMW X5 3.0i 3.0L MIL Lamp on VIN: 5UXFA135X5
I have this X5 with a evap leak. I smoke tested the evap system and could not find any leaks. I put a gas cap on and road tested the light did not come back on yet but the check the gas cap warnning did. Is there a common leak point for tis car? Trouble codes: P0456 (Evap slow leak)
1991 Chevrolet Camaro RS 3.1L No Start, Cuts out, Stall VIN: 1G1FP23T4M
Hello all , vehicle came in with multiple driveability issues(idle rough , dies at road speeds & etc.)Found map sensor voltage not responding on scan tool so replaced map sensor & PCM. That issue is resolved but now it will start (sometimes)& will run OK for a...
1994 Chevrolet G20 Sportvan 4.3L Poor Idle Quality, VIN: 1GBEG25Z1R
Ok now again i want to thank everyone for there replies fro my last post on this Chevy.Now i,m down to the last problem here i hope I have no voltage ref. to my IAC .Have replaced pcm 2 times once again i,m very limited to the tools i have at hand to disg. thi...
2002 Chevrolet Impala LS 3.8L battery VIN: 2G1WH55K72
Short trip driver. Michigan winter. After a few weeks battery is starting to get weak. Charged battery and checked draw. Initially 1.6 amp draw. After a few minutes everything goes to sleep and draw drops to 18ma. Within a few seconds draw jumps up to 1.8 -1.9...
2005 Chevrolet Silverado 2500 HD 6.6L Excessive Emissions, Hesitation, MIL Lamp on VIN: 1GCHK23225
This vehicle is smoking(white/gray fuel smoke). Has no boost at idle or during acceleration.The maf reading is down around 17 at idle.Also has sporatic problems with EGR system performance but according to the position senser it is currently closed.I have swep... Trouble codes: P0101 (maf PERFORMANCE)
2007 Chevrolet Cobalt LS 2.2L No Start VIN: 1G1AK15F47
Someone please show me the light! It's so dark in this poor little Chevy. I'm a mobile ECM programmer and do diag for shops only. I was called in to program the PCM, I have flashed 150+- GM vehicles. When the programing was about 50% done I lost communication ... Trouble codes: U1016 (Lost communication with pcm/TCM)
2010 Dodge Ram 1500 Truck TRX 5.7L indicator light VIN: 1D7RB1CT7A
Vehicle bought used and since then customer experiences occasional warning from tpms system. Out of manufacturer's warranty and customer (local specialty paint and body shop) has no tpms tools. Scanned, no pending codes and the tire pressure is always correct ...
2004 Ford Explorer XLS 4.0L Poor Idle Quality, Misfire VIN: 1FMZU62K24
Happy (*%^#!!@@#) New Year! I left on christmas eve with a shop full of problem vehicles, and came back today and they're still here! Lazy bunch of Elves must of gotten drunk and missed my shop. Anyway this Exploder came in with the converters completely restr... Trouble codes: P0300 (random misfire), P0316 (misfire on cylinder 6 detected on start up)
2005 Ford F-350 Super Duty XL 6.0L Starter
Hey guys, I've been working on this truck on and off for a few months now. Intermittently this truck won't crank. It's a friend's landscape/plow vehicle so getting chances to work on it are few and far between. My first inspection of course, the truck starts j...
2006 Ford F-350 Super Duty XLT 6.0L Alternator VIN: 1FTWW33P86
I'm looking for specifications on the charging system output at idle and 2000rpm. I have a customer who has replaced 3 remanufactured alternators within the last month and now the third one is having issues. The only conclusion I've found was a bad alternator....
2006 Ford E-350 Super Duty XLT 5.4L No Start VIN: 1FBNE31L86
Hello fellow techs -- This van was towed in as a no start - check for spark / fuel - has spark no fuel - check inertia switch not tripped - scan no codes found - test at pump harness 8v - removed tank changed pump - fill tank - it started and ran about 2 min -...
2002 GMC Sierra 2500 HD SL 8.1L Poor Fuel Economy VIN: 1GTHK23G22
how does a 1/2 of a quart of fuel get into the oil over just 50 miles and not set a code or run any differant. Found the fuel trims to be normal. o2s are switching from lean to rich with out a problem. Coolant sensor is right. air temp is right. the egr is not...
2003 GMC Envoy XL SLE 4.2L Power steering hose VIN: 1GKET16S93
This is probably a simple question for someone, but has anyone replaced a P/S hose on one of these Envoys? According to MOD there is a special tool to remove the "inner" seal at the rack & pinion, J44586. It does not appear to be a very popular tool. Has anyon...
2004 GMC Yukon Denali 6.0L 2-3 shift VIN: 1GKEK63UX4
Vehicle while driving when it goes to enter 3rd gear shift it is actually going back to 1st and for 4th is goes back to second. Via Tech 2 it is being comanded properly but sets no codes for this problem. As it is comanded it shows 2-3 shift error to 43 second...
2002 Honda Odyssey EX 3.5L 2-3 shift VIN: 5FNRL18092
Greetings all and happy new year. Van came in with a TCC code. Replaced torque converter and updated valve in valve body. Also saw some wear on 3rd clutches so replaced those as well. Car was great and given back to the customer. Within 2 days the car wouldn't...
2005 Hummer H2 6.0L heated seats VIN: 5GRGN22UX5
This one got me stumped. If there is a driver, neither heated seat works. If someone sits in the passenger seat(doesn't matter if the driver is there) BOTH heated seats will work. As soon as the passenger gets up, they shut off. I'm thinking occupant sensor bu...
2008 Isuzu Ascender S 4.2L MIL Lamp on VIN: 4NUDS13S38
I have an Ascender (trail blazer , envoy) with above codes. I have disconnected the hoses at the air cleaner and solenoid valve, started engine and have plenty of air flow. When i activate the pump and the valve the o2 voltage drops to 0V. I do not find a pid ... Trouble codes: P0411, P2432, P2440
1990 Jaguar XJS Classic Collection 5.3L ign. & F.I. VIN: SAJTW4842L
This is a repost of a help request from a week ago which was posted on another account due to computer problems preventing the postr from my computer. I have a situation where, after a wiring repair "fixed" an engine starting failure, the "repair" failed and I...
1997 Jeep Grand Cherokee Limited 5.2L guages, electric windows and locks VIN: 1J4GZ78Y1V
I have been working at this for a while. Have checked the fixed list on tech request and tried all the solutions that have been used. The dash works fine for about 5 minutes when i start it. As time goes on it flickers on and off for a while, meaning 2 minutes...
2007 Mercedes-Benz S550 5.5L No Start VIN: WDDNG71X07
Inittialy came in for fault codes with camshaft timing, found timing chain idler gear wore down. So followed with r&r of engine. After engine installed cranked car, and unfortunatley, wrong timing marks were used so bent valves. Removed engine again and pulled...
2000 Nissan Maxima GLE 3.0L Surge, Stall VIN: JN1CA31A5Y
Car came in with a code P0100 for air flow meter.Car would not idle or accelerate. Car would start and die cold. Had 0volts on white signal wire at MAF. Replaced MAF and now have 1.4 volts at signal wire and car runs great when warm. On cold start, car starts ...
2007 Nissan Sentra SL 2.0L No Start, Stall, MIL Lamp on VIN: 3N1AB61E17
Vehicle towed in COWS.Found code P0335 crank sensor circut failure. Good ground, had 5 volt reference,scoped & sensor flat line. Replaced crank sensor & broken connector with 2 feet of pigtail. Now starts & runs for about 10 min. stalls & code returns.Scoped c... Trouble codes: P0335
2002 Pontiac Aztek 3.4L awd VIN: 3G7DB03E52
I suspect rear axle actuator is faulty component causing this concern but the price tag has me a little gun shy. The customer had installed a used rear diff for noise and awd dissable displayed. He brought it to us with awd disable displayed and abs light on. ...
2006 Saturn Vue 2.2L Loss of drive VIN: 5GZCZ33D26
Customer states car was driving normally & out of the blue she lost all forward gears. REVERSE FUNCTIONS NORMALLY!! It has the 4T45-E Automatic Transaxle. (I do not believe this is the one that blows up all the time.) . No codes in any systems. Fluid level nor...
2001 Toyota Camry CE 2.2L MIL Lamp on
I have an 01 camry we are trying to set the evap and cat monitors on. We have replaced a thermostat as it set a p0128 code while attempting to set them and have now done several cold soak monitor runs and neither the cat or evap will set. The iat and ect are w... Trouble codes: P0128 (Thermostat engine temp)
2006 Toyota Tundra SR5 4.7L Starter VIN: 5TBET34186
The truck drove into the bay and we changed the water pump and timing belt. Now it won't crank over. Removed intake manifold and starter will crank if given manual signal. Armed and disarmed alarm--no change. Checked wiring connections, fuses and relay. Help??...
2002 Volkswagen Passat GLX 4 Motion 2.8L cam timing VIN: WVWTH63B82
had the codes in when first got it. p0021, cam pos A overadvanced OR system performance- bank 2...and, p0011, cam pos A timing overadvanced OR system performance, bank 1...usually send German stuff to the dealer cause I only have a snap-on scanner with generic...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2004 Cadillac CTS 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6DM57754
Ordered new aftermarket ecm. Unable to flash ecm inhouse, sent to dealer. Dealer unable to communicate with ecm. Ordered another aftermarket ecm, same result. Ordered o.e. ecm. Dealer reflashed and car runs like new. Thanks for all of your replies. Trouble codes: P0201 (Cyl 1 Injector circuit porblem), P0300 (Cyl misfire detected), P0301 (Cyl 1 misfire detected), P0522 (Engine oil pressure sensor circuit signal low), P2008 (IMRC solenoid control circuit fault).
1994 Chevrolet G20 Sportvan 4.3L Poor Idle Quality, MIL Lamp on VIN: 1GBEG25Z1R
First and foremost thanks to all of you who replied .I know how busy all of you are there were several things going on with this van of cource the cts the egr valve and even had a stuck open therm.B utnow the only thing i,m not getting is my 5volt ref. to my I...
2003 Chevrolet Suburban 1500 5.3L cat & evap monitors
yes I checked repeatedly for pending codes-none, I tried refueling 2x, also partially blocked radiator air flow to raise engine temp even tried driving in 2nd and 3rd gear at higher RPM to bring temp over 210 deg. Still 2 monitors not ready - Cat & Evap Howev...
1998 Ford Ranger Splash 4.0L No Start VIN: 1FTZR15X7W
First, thanks to all who responded. I am sorry that I cannot report a fix yet but I am closing due to time limitation. The elctronics diagnostician came last week and was able to check the relays and diodes, all OK and he verified that the good used ECM that I...
2004 Ford Explorer NBX 4.0L engine VIN: 1FMZU73E34
Thanks to all that replied there is a difference in the engines as vincent said explorer has balance shaft. I was able to confirm this with dealer who was willing to do some research.As it turns out I located a low mileage used one hope its good!!The only rea...
2005 Ford F-550 Super Duty Lariat 6.0L Dash Charge Indicator VIN: 1FDAF57P45
Thank you to all that replied. After doing pin point test, with all tests passing, i went ahead and changed out the second battery,and have not had a problem since. Go figure.. stick with the basics on some things.
2006 Ford Escape XLS 2.3L Mechanical VIN: 1FMYU92Z36
The customer has reported to me that after driving 500 miles, he has had to add at least 2 quarts of oil. I guess this mystery is solved, abuse has lead to premature wear, and they need to start buying oil by the case. I doubt they will be interested in repl...
1991 Jeep Wrangler 2.5L clutch
I replaced the clutch master cylinder with another one and the problem is solved.
2002 Mercedes-Benz C240 2.6L No Start VIN: WDBRF61J82
First, thank you for the replies. Since I did have injector trigger and some spark, I was sure the crank sensor was working. However, after more discussion with the owner, I discovered this had not run for over 6 months. Also, I was wrong in saying the spark...
1998 Mitsubishi Eclipse GS 2.0L bucking/jerking VIN: 4A3AK44Y8W
After going through everything we did find somewhere that they had problems with the egr and after blocking it off and test driving the vehicle it is now fixed. At this point we are not sure if it is the valve or the controler of the valve, because the custome... Trouble codes: P0137, P1391.
2004 Nissan Maxima SL 3.5L No Start VIN: 1N4BA41E74
sorry for the delay with all the holidays i havent had a chance to get back on here and let you guys know that this vehicle is a fix. timing chain was the problem opened timing cover replaced chain and tensioner and all is well again thanks for all the help ha...
2000 Porsche Boxster Roadster 2.7L Lighting VIN: WP0CB2983Y
Well I will call this fixed. I switched the complete unit with a 1999 996 unit. drove the 996 for a couple of days and the light stopped working. checked / tightened connections in the boxter light assembly. gave the car to the customer over the christmas brea...
2005 Toyota Prius 1.5L MIL lamp on VIN: JTDKB20U85
Well Its fixed! John [...] you am de maan! The DLC connector was the problem source! After a check on almost all the connectors & pins to the modules, we came back to the DLC connector and discovered a 10K ohm short from B+ve pin 16 to Can bus Hi & Can bus Lo...
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