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Prev Professional Automotive Repair Technical Discussions for May 18, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
2007 Audi Q7 Premium 4.2L Starting, ignition VIN: WA1AV74217
Q7 towed in with a no crank/no start condition. Car will not come out of park, steering wheel will not unlock. Key in ignition chime comes on. Key fob will unlock doors. Scanned with Autologic and got code 16347 control module defective (access and start permi...
1991 BMW M5 3.6L Hesitation, Cuts out, Stall VIN: WBSHD9311M
Vehicle came to shop with vehicle rough driveabilty on acceleration would just fall on it face no acceleration would just bog down. found vacuum leak at intake manifold and two fault codes were present #10 Oxygen sensor control and #28 Oxygen sensor All were r...
1990 Chevrolet Camaro Iroc-Z 5.7L No Start, no injector pulse
This one Iam looking for some advice focusing on the ECM only. After all my testing, Ive concluded that the injector driver circuit is faulty. The engine and management system is in a 56 f100 truck. It has an aftermarket PROM from a speed and marine shop. The ...
1994 Chevrolet Corvette 5.7L Poor Braking VIN: 1G1YY32P7R
This Corvette has a poor braking problem at speeds above 40 mph. If you stop slowly it is fine until you try a panic stop. The pedal goes down about half way then stops, hard as a rock and the car will not lock up the brakes even with the abs disabled. The tem...
1998 Chevrolet Corvette 5.7L Cuts out, Stall, Steering lock VIN: 1G1YY22G9W
Car taken out of storage & came in for basic oil change & neither key fob working. Found batteries dead in key fobs. Changed, tried to sync two together(old method - didnt work) - Synced correct way through cluster & worked. At sometime during or after this pr...
2001 Chevrolet Corvette Z06 5.7L Poor Idle Quality, Misfire VIN: 1G1YY12S81
I hope someone can help me with this one. This Z06 came in with a light misfire at idle, datastream showing active misfires mainly on cylinder #4 and occasionally on #3. Found only 50 lbs. compression on #4. Pulled the right side head and could see where the g... Trouble codes: P0300 (random misfire)
2007 Chevrolet Colorado LT 3.7L security system VIN: 1GCDS19E17
hello techs out there. i have bought a 07 colorado with 5cil engine. it is a collision car with front end damage.i got the car without the key,so when i was finished rebuilding the car,i ordered a new key. brought it to a locksmith to get cut and all went well...
2008 Chevrolet Suburban 1500 LTZ 5.3L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 3GNFK16318
We moved the coil, plug, and injector to other holes. That didn't move problem. gave back and customer came back same codes came back. Compression is 135psi on cylinder 8. Acts up at random. Acted up sitting still at fast food line and when he started driving ... Trouble codes: P0300, P0308, C0561
1988 Dodge Daytona 2.2L Cuts out VIN: 1B3CA44EXJ
No communication with scanner . Tried 2nd scanner , no go . I used to get data with my modis last time he had it in shop . Pins at diag conector look ok . Voltage and grounds at connector ok , Can get it to flash codes by cycling key on off 3 times . code 12 /...
2000 Dodge Stratus SE 2.4L Poor Idle Quality VIN: 1B3EJ46X2Y
This car runs rough at idle only seems that it may idle better cold than hot but still not perfect. While driving runs excellent. No DTC's, has new champion plugs and new wires. 50 psi fuel pressure. 150 to 180psi cylinder compression. To me it seems like a va...
2004 Dodge Ram 2500 Truck ST 5.9L Starting VIN: 3D7KU28C74
Now my problem is the truck want start because the of code p0633 skim and po6300 no vin.What I understand the vin needs to be re-programmed in to the ecm and the skim module. I have a pegisys and a bosch vci scan tool and both should be able to do the re-progr...
2006 Dodge Ram 3500 Truck SLT 5.9L compressor coil VIN: 3D7MX48C96
Thank you for the help in advance. I do not have that much exp. with doge a/c. I have found that the a/c compressor coil will trun on for a second but then go off if you wiglied the conector at the coil. I removed the conector and found that the terminals were...
2007 Dodge Dakota SLT 4.7L MIL Lamp on VIN: 1D7HE48J87
I have this 2007 Dodge Dakota with a 4.7L that keeps setting a P2098 with MIL. No drivability problems at all just the light. I have checked for exhaust leaks, replaced the B2S2 O2 Sensor twice (both factory MOPAR parts) and even checked to make sure the PCM w... Trouble codes: P2098 (Bank 2 Downstream lean)
2008 Dodge Ram 1500 Truck ST 4.7L MIL Lamp on VIN: 1D7HA16N08
We had this truck come in last December with this code. The company that owns it has a mechanic on staff but he's more familiar with heavier equipment. He replaced the sensor, then switched the front sensors side to side. The same code kept returning. After do... Trouble codes: P0153 (O2 Sensor B2S1 Slow Response)
1993 Ford Thunderbird Super Coupe 3.8L Cuts out, Stall, MIL Lamp on VIN: 1FAPP64R1P
Car will start at times can not do self test with scan tool,will go into test but will not run test. Check eng. Lamp flashes on off,fuel pump will stay running,cooling fan keeps running with key on or with car running, also other lamps will flash on dash shift...
1997 Ford Econoline Super Duty Custom 7.3L Excessive Emissions, Hesitation, Surge, Misfire, Poor Fuel Economy VIN: 1FDLE47F3V
Hi truck sat for awhile, we pulled tank, dropped fuel and boiled it out, pulled out filter housing and cleaned out all the junk in it and cleaned small screen beside low pressure pump just because. all new hoses and no leaks anywhere. brand new f...
2001 Ford Escort SE 2.0L Misfire, MIL Lamp on VIN: 3FAFP13PX1
I have replaced spark plugs with motor craft ,spark plug wires, cylinder #4 fuel injector and coil pack. The car will run good sometimes for 2 days at a time and then most of the time problem will occur after you have been riding it and let it sit for an hour ... Trouble codes: P0304 (cylinder 4 misfire detected)
2003 Ford F-150 Lariat 5.4L Poor Idle Quality, Surge, bad spark knock VIN: 1FTRX18L93
Help! This truck has a bad ping / spark knock while driving and it is up to full temperature. Doesn't seem to do it when cold. Has had induction cleaning performed. Cats seem to be ok and operating normal. Truck still has pretty good power , no noticeable loss...
2003 Ford Expedition XLT 5.4L Misfire, MIL Lamp on VIN: 1FMFU15L73
this truck come in at around 1pm with the light on scanned codes. performed cylinder balance test no miss found. the truck drives good and no miss is felt nor shows on data pids. i let it cool down and re tested with same results. should i let it sit overnight... Trouble codes: P0316, P0303
2006 Ford Explorer XLT 4.0L several engine wire connectors VIN: 1FMEU63E26
This truck came in with wharped heads so I removed them and when I replaced them I started the truck and it ran poorly. I checked for codes and found many among which was an MAF code. I went to disconnect the MAF connector and found all five wires had the insl...
2007 Ford Edge SEL 3.5L Mechanical VIN: 2FMDK38C77
This vehicle is making a strange whinning noise from the transmission that increases in pitch with increased speed. It only does it while accelerating and goes away during coast and decel. The sound is analagous to wheel bearing noise so I'm guessing that mayb...
2005 Hyundai Accent GLS 1.6L Mechanical VIN: KMHCG45C85
Replacement engine has valvetrain type noise when cold,gets quieter as warms up. Alldata shows no adjustments,is this accurate and are these known to be fairly noisy.
1997 Isuzu Rodeo S 2.6L Clutch VIN: 4S2CK58E2V
Have a problem in the clutch hydrolic system. We replaced everything other than the lines pressure blead the system. The pedal will be fine but if it sits over night the next day you get a low pedal to no pedal. Thanks in advance for the help
2005 Jaguar XK8 4.2L fluid leak VIN: SAJDA42C45
We have a transmission leak on the back side of this XK8 Jag trans its coming out at the connector for the wires . The dealer sent us the replacement sleeve but nowhere does it tell us how it comes out of the trans a tech at the dealer said it had a screw in t...
2002 Jeep Wrangler SE 2.5L evap VIN: 1J4FA29P52
hello everyone ,need a little assist please. i had a 2002 jeep wrangler come in with a check engine light on . pulled code and found a p0441. the jeep had the vent valve,leak detection pump replaced prior. i determined and believed the purge valve might be sti...
2005 Land Rover LR3 HSE 4.4L intank level sensor VIN: SALAG25465
we need to now how to intall left sender unit on fuel tank tks in advance
2002 Mazda MPV ES 3.0L pcm VIN: JM3LW28J52
repeated codes 171, 174 lean b1 b2. at idle fuel trims look normal, anything off idle long term trims go to 15 almost instantly. no driveability issues. customer complains of rotten egg smell and very rare hesitation. dealer did reflash and said if codes come ...
2000 Oldsmobile Alero GLS 3.4L No Start VIN: 1G3NF12E8Y
Vehicle has an intermitten no start. When problem occurs, "service engine soon" indicator does not illuminate. When "SES" indicator does illuminate, vehicle will start. Vehicle may start 5 - 10 times with no problem, then problem will occur. Vehicle will have ... Trouble codes: U1000 (serial data lines)
2000 Rolls Royce Silver Seraph 5.4L Cluster VIN: SCALA61E1Y
Rolls Royce techs I need help. I have serviced this vehicle and need to know how to reset the service now light. Please help, Henry
2000 Saturn LS2 3.0L Hesitation VIN: 1G8JW52R9Y
Ok, we think we have this narrowed down but I would like another opinion. This thing will not excel. over 1000 rpm without it falling on its face. It will idle just fine all day. We've done a cat and fuel filter first. We also replaced the mass airflow. There ...
2007 Saturn Vue 3.5L Compressor VIN: 5GZCZ534X7
We have this Saturn that blows warm air at idle. It does improve with higher rpm and vehicle motion. We replaced the expansion valve and have same pressures. Does this vehicle have a variable rate compressor? And would a weak compressor cause these pressures...
2002 Subaru Impreza WRX 2.0L MIL Lamp on VIN: JF1GD29692
Originally came November 2011 with p0420. customer got dealer to warranty front cat. Vehicle has front and rear cats between the a/f sensor & rear O2 sensor.vehicle came back in april with a a/f ratio sensor code. Sensor tested bad & we replaced it & ran monit... Trouble codes: P0420 (Cat efficiency)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2011 Audi S5 4.2L AWD-coding VIN: WAUCVAFR5B
Thanks to all which have replied. We have towed car to our nearest dealer for of the differential. [Because customer wanted car before long weekend here in Canada]. Yes, everybody told my you need OEM tool to code diff. Ross-Tech hasn't replied, therefore I as...
1997 BMW Z3 Roadster 1.9L air bag light VIN: 4USCH7326V
thanks for the Info now I know I have to buy the cable for are scan tool for BMW. Thank you all for the info.
2005 BMW X5 4.4i 4.4L Suspension VIN: 5UXFB53535
We were able to get the self-leveling system back to level. We ran a short test to test all the 48 controllers on this vehicle. It had 8 controllers that had fault codes. We cleared all codes from the controllers and then proceeded to re-calibrate the ride hei...
2003 Buick LeSabre Limited 3.8L Drivability VIN: 1G4HR54K63
I replaced the steering angle sensor and havn't heard back from the customer. Hopefully it is fixed. Thanks for the input. Randy.
2000 Chevrolet Impala 3.8L no start VIN: 2G1WF55K5Y
I couldnt get the new passlock to relearn. SO I tried the old one again. I put the old passlock and tumbler back in and relearned it by leaving on for over ten minutes. I had to do it twice. Then car started with no security light. So instead of trying to r...
2003 Chevrolet Venture LS 3.4L Hvac gauge VIN: 1GNDX03E03
The customer wanted a new one, installed it and good to go! Thanks for all of your help guys!
2003 Chevrolet Tahoe LS 5.3L oil VIN: 1GNEK13T23
GM has a updated oil pickup screen o ring. I replace the O ring and Tahoe is running fine now. I call the custom, after five days and still running fine. Maybe I got lucky. Thank for all the advice.
2004 Chevrolet Colorado LS 3.5L abs code VIN: 1GCDS136X4
Well. After talking with the customer, there is currently no further complaint on the ABS activation. The customers has put 675 miles on the vehicle since first tested and inspected We had informed them that more than likely the problem is not solved. We are ...
2004 Chrysler 300M Special 3.5L No Start, Stall, MIL Lamp on VIN: 2C3AE76K84
THANK YOU TO ALL, so when the car came in with this problem we looked at all the posiblitys, before getting started. The computer was flashed by the dealer a year ago, so we crossed that out. Replaced the crank and cam sensors two times with originals not afte... Trouble codes: P0340.
2001 Dodge Neon ES 2.0L No Start, MIL Lamp on VIN: 1B3ES46C11
not many replies on this one. I found the power feed wire from the computer to power the hall effect sensors had only 2v when the sensors are all plugged in. when i unplug them one at a time the voltage goes up until they are all disonnected it goes up to 9v. ... Trouble codes: P0340, P0743.
2003 Dodge Durango SLT 4.7L timing chain VIN: 1D4HS48N13
ok found problem. opon removing front cover saw nothing wrong until i had my guy start motor. i quickly yelled for him to shut it down as the bolt that holds the chain idler sprocket flew out at me followed by a stream of oil. from what i could gather that lau...
2007 Dodge Sprinter 2500 3.0L MIL Lamp on VIN: WD0PE74537
the customer has not returned for me to further diagnose. maybe the light did not come back on , not sure. thanks to all for the replies Trouble codes: P2454.
2007 Dodge Charger 2.7L 1st, Reverse and neutral VIN: 2B3KA43R07
Well it's fixed! The second time pulling the pan on this one we found two pieces of broken snap ring by the magnet... probably from the input drum I am suspecting. The customer was totally out of time so we stuffed a $325 used unit in and she's good to go.
2005 Ford Escape XLT 3.0L driveline VIN: 1FMYU93195
Well everyone I have to hope this will be a GOOD day and a great morning to all that helped me, as I am hoping for the same.I want to give an extreme THANK YOU to all that sent me excellent ideas and insight on this vehicle. I have ordered a set of chassis ear...
2006 Ford F-350 Super Duty XL 6.0L No Start VIN: 1FDWF34P06
Thanks for all the replies! The fix; replaced the starter. The cranking RPM was 135 during no start and that was too slow. Now its too fast to measure before it starts but sounds to be twice as fast. All who suggested a high pressure oil leak would likely have...
2007 Ford Fusion S 2.3L No Start VIN: 3FAHP06ZX7
This car is repaired and has been out the door for 4 days with no problems. My tech accidently shorted out the PCM by touching a ground to a a/c circuit attempting to test wiring for a A/C compressor not engaging problem. Guys be very careful probing circuit...
2007 Hyundai Tucson GLS 2.0L tensioner VIN: KM8JM12B97
well this one is out the door,strange the way this works install on engine pull pin and adjust with allen wrench till marks match.
2001 Jeep Grand Cherokee Laredo 4.0L gauges VIN: 1J4GW48S71
Sorry this took so long. What we found out was the customer didn't substitute the BCM like he said at first. Anouther lesson learned don't belive everything the customer says. We finaly got the aproval to replace the BCM and all problems were resolved except t...
2004 Jeep Grand Cherokee Overland 4.7L MIL Lamp on VIN: 1J8GW68J44
the customer declined any further diagnosis , i really wanted to help him but seems it got down to a money issue. so i was not able to current ramp the solenoids. i want to thank all for the replies , customer was advised of the ce light coming back on . the o... Trouble codes: P0141, P0161, P0158, P0442, P0456, P0765.
2003 Lincoln Town Car Signature 4.6L Fuse 2.14 VIN: 1LNHM82W33
A couple of you were dead on. The wiring to the OD switch was in fact rubbed through the insulation on the steering column. We verified the integrity of the wires, wrapped them up, and replaced the fuse. I have not heard a thing since, and the customer was ...
1994 Mercedes-Benz S320 SWB 3.2L Misfire VIN: WDBGA32E7R
everyone was pretty much right about wiring. the person that installed engine didn't put coil covers on right and it pinched the wires to two coils. repaired wires and bought the right bolts for cover fixed it.
2003 Mercedes-Benz SL500 5.0L Tilt Telescopic
Driver side sams module was the issue. By the way it was plug and play which was a big surprise. Thanks for looking. Seth
2000 Nissan Frontier SE 3.3L compressor not engaging VIN: 1N6ED27Y5Y
thanks for all the replies, it was the thermo apm. customer has had the car back a week now and all is good,, thanks again
2001 Nissan Sentra GXE 1.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 3N1CB51D31
FINALLY FIXED!!! after exhausting every possible option and staring at data that looked fine. we decided to trace back our steps. since the first issue we had was the bnk1 sen1 O2 wouldnt switch at all on the scanner but was switching live at the pcm wires (pc... Trouble codes: P0325 (Knock sensor), P0134 (B1s1 no activity), P0171 (Bank one lean).
2001 Saturn L200 2.2L airbag light VIN: 1G8JU52F91
Thank you to all who helped out on this one, it is fixed. First of all, we did not have the red cable for using pass thru with the Tech 2, and I doubt at this point in time it's really worth buying anymore. I just sent the car down to a local GM dealer and h...
1998 Toyota Corolla CE 1.8L mount VIN: 2T1BR18E0W
Thanks for the help! The problem was the front engine mount on the passenger side of the vehicle. The original mount was bad and the aftermarket mount did not correct the problem. Installed an OEM mount and problem solved.
2000 Toyota Echo 1.5L Belt VIN: JTDBT1230Y
Thanks to all who responded.The slash shield was there & properley mounted.The bolts for the pump bracket were all installed & tight,I didn,t have all posts before having to get this one out the door so didn't check crankshaft for exessive thrust,Couldn,t see ...
2009 Toyota Camry XLE 2.4L alternator VIN: 4T1BE46K29
Well, thanks to all that replied. With your help we discovered that all the wiring was ok. The problem was a defective clutch pulley on the alternator. It did not work at all times. We spoke with the people who tested it because we thought they would have caug...
2003 Volkswagen Beetle GLS 2.0L Hesitation, MIL Lamp on VIN: 3VWCK21C93
found sensor wired backwards and ground at ignitor,most fixes responded with timing belt issuses timing marks where dead on beware of napa parts Trouble codes: 9023 (camshaft postion senor fault).
2004 Volvo S40 LSE 1.9L vvt sprocket VIN: YV1VS27524
its done and gone! I put it together does not need to be clocked. about the no timing mark, i just put it close to the position of the old one and made my own mark. rolled the engine by hand twice every body was lined up. Im glad I was able to get my hands on ...
2005 Volvo S80 2.5T AWD 2.5L No Crank VIN: YV1TH59235
Well gentlemen, thanks for all the great help. We tried all of the ideas and nothing worked. I had to tow it to the dealer and they re programmed the entire security system. They said the immobilizer was locked out and the keys were no longer coded to the v...
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