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Prev Professional Automotive Repair Technical Discussions for April 12, 2012
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Open Help Requests for All Makes and Models
Help Request Answers
1993 Acura NSX 3.0L Emmisions VIN: JH4NA1156P
This is for all you California Techs. This car runs great all the time and is bone stock, no modifications at all. It will not pass the smog test because the NOx, something this car was never designed to control, reading is to high. It measured 865ppm and the ...
2000 Audi A6 Quattro 2.8L timing belt tension VIN: WAUEH54B0Y
Howdy all. I have a timing belt tensioner thats is losing tension after driving a short, 20 miles, distance. I replaced the tensioner again however it has bled down again. It was adjusted as per all data to 15Nm. What am i doing wrong? Thanks in advance for an...
1997 BMW 528i 2.8L Brake warning light VIN: WBADD62090
Hi all, This BMW came into our workshop with the brake warning lamp on the instrument cluster constantly illuminated. It's the one with an exclamation mark in a circle. I first checked the operation of the handbrake switch and the brake fluid level, then remov...
1997 Buick Skylark Limited 2.4L Poor Idle Quality, Cuts out, Stall VIN: 1G4NJ52T3V
when i run the car for 20 minutes and let it sit for 45 minutes i can start the vehicle and within a few second it will stall out. If I restart it takes a long crank before it start again and it will run ok but just a little rough, I tested for high oil pressu...
1951 Cadillac Series 62 (Car) DeVille 5.4L Wiring VIN: 000FW46458
Two problems guys. I need a proper wiring diagram for the firewall so I can repair the harness which has been substantially damaged. The ignition switch and the underdash wiring is substanially hacked. I only have basic drawings of the typical systems old cars...
2000 Chevrolet Malibu LS 3.1L No Start VIN: 1G1NE52J2Y
Hello everyone. I have a 2000 malibu that was brought in from dealer with a intermitten no start.Dealer told customer it was bad fuel pump but wanted way to much to fix.When we got vehicle we found 58 psi on fuel press.When vehicle wouldn`t start we have no sp...
2000 Chevrolet Tahoe LT 5.3L Hvac VIN: 1GNEK13T8Y
HVAC system inop. Neither head unit in front or rear working. fuses good. No blower, A/C light won't come on, only panel illumination lights. Bounced tilt wheel up and down to check for ignition switch problem, no change. Looked at all connectors behind panels...
2001 Chevrolet Tracker ZR2 2.5L Cuts out, Stall VIN: 2CNBJ73481
Hey guys need some help on this monster. Vehicle came in, the problem is whenever it is put into gear(Rev,Drive,M1,M2) the engine will stall being put under the load. Had originally believed that the problem was in the transmission so the trans was replaced an...
2006 Chevrolet Malibu SS 3.9L MIL Lamp on VIN: 1G1ZW63126
Greetings: Sold used unit came back with customer complaining of rough idle, smells like overheating-sucks gas way too fast and mil on. NPF on the rough idle, overheat smell and sucks gas way too fast. Did verify mil on. Extracted code P0442-evap small leak d... Trouble codes: P0442 (evap small leak)
2006 Chevrolet HHR LS 2.2L Poor Idle Quality, Surge, Misfire VIN: 3GNDA13D66
Vehicle came in customer stated car was hard to start and runs rough intermittent. This morning it ran rough it had code p0300. It was racking up missfires on cylinders 2 and 3. We replaced the ignition module and it still ran rough. We have also replaced the ... Trouble codes: P0300
2007 Chevrolet Silverado 2500 HD LT 6.0L Rt Rear Trailer Lights VIN: 1GCHK29K97
Brake lights and blinkers are inop on rt side for trailer.the strange thing is the fuse under hood has power at all times,the left side is working and fuse has power only when in use .i assume the power distribution box is bad and contains the flasher as well ...
2001 Chrysler Town & Country (Van) LXi 3.3L Dash display VIN: 2C4GP54321
Good afternoon Customer replaced battery and as he installed cables he noticed some smoke from the starter area, of course he says the terminals were not crossed. Anyway he also replaced starter and installed a different battery. Starts and runs fine, no HVAC...
1983 Ferrari Mondial Quattrovalvole 3.0L windows And Top VIN: ZFFEB06B00
This car came into my shop from a friend. The cars electrical is a real mess. The top is part way up the windows do not work there are cut and spliced wires all over the place. My problem right now is we have 0 info for this car. we can not find the fuse box a...
1998 Ford F-150 Lariat 4.6L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1FTZX18W5W
Hi Guys..Had an engine than ran fine but no oil pressure..So I installed an used engine from the wreckers but runs like shit,especially hot,not too bad when cold..Thought I had a vacuum leak but I removed intake & installed one from the engine that ran good.St...
2001 Ford F-350 Super Duty Lariat 5.4L Drive-axles VIN: 1FTSX31L71
Hi everyone, We have a bearing-knocking noise from the front only in 4 wheel drive with hubs locked. Will not do it on the lift, needs to be under a load. Hooked up the chassis ears, but the noise travels through everything. Tried putting shifter in 4WD with ...
2002 Ford Explorer Eddie Bauer 4.6L no communication VIN: 1FMDU74W02
2002 explorer here failed state emmision test for no communication with obd system. my modis communicates and all monitors are passed with no codes. tried solus and generic code reader, all communicate. took back for retest failed same thing. i talked to guys ...
2003 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53U63
Customer came in with cel on(P1336)cleared code and drove car.code came back the next day.removed and inspected syncro and sensor(given their history for failure)found that it appeared to have been replaced with a Ford reman.replace sensor and syncro(dorman)co... Trouble codes: P1336 (CKP and or CMP input signal to pcm concerns)
2003 Ford Focus SE 2.3L Mechanical VIN: 1FAFP34Z53
vehicle was brought in for check engine light scaned found codes p2004 and p2008 intake runner control open door it had a ruptured hose for the pcv valve so replaced the hose and pcv valve now the vehicle runs good but after about 35 miles the code returns the...
2003 Ford Taurus LX 3.0L Cuts out, Stall VIN: 1FAFP55203
car came in for a stall driving on hwy intermitent fault gadges go irratic loss of speedo but no codes in ecm. only in gem mod so far can not duplicate test drove 3 times no problem. car has mouse problem mouse poo on engine but cannot see chewed wires only so... Trouble codes: B1551, B1448, B1318
2005 Ford Focus ZX4 2.0L Stall VIN: 1FAFP34N65
First time working on this car. Came in stalling and low fuel system lean. Checked PVC hose, seemed alright. Checked fuel pressure - had 2 lbs. Installed new pump 60 lbs. Took for test drive seemed to run great. Now she says dies once in a while. Also every on...
2007 Ford Fiesta 1.6L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on
I have a ford fiesta that will go into limp mode continually with a reoccuring code p061d, ford has replaced the computor and given up, vehicle sent to me from another repairer and have limited info, can anyone please help Trouble codes: P061D
2008 Ford Taurus SEL 3.5L Odometer VIN: 1FAHP24WX8
Greetings Ford Techs, The liquid Chrystel odometer display in the instrument cluster stopped working.There are no codes generated after self test. So I am assuming the instrument cluster needs to be replaced. My local ford parts dept tells me we need to submit...
2009 Ford Escape XLT 2.5L power tailgate latch VIN: 1FMCU03789
Hello. This vehicle was hit hard on the left front, requiring the fuse box to be removed for fender replacement. The power tailgate release does not work with the key fob or the button at the tailgate. THE GLASS PART WORKS WITH BOTH THE FOB AND BUTTON. Acco...
2009 Ford Escape XLT 2.5L electric power steering VIN: 1FMCU03789
As stated before, this car was in a major front end accident on the left front. The body man had to remove the underhood fuse box to replace the fender. The entire left front suspension was replaced. Upon startup the steering made a full lock turn to the rig...
1999 GMC Sierra 1500 SLT 5.3L Cruise Control VIN: 2GTEC19T8X
We are unable to get cruise control to work. Have checked all switched inputs and all check ok. All brake light bulbs are working. The only thing that we dont know is what the voltage should be on the Green/White VSS input from the VCM. We have 11.5 volts on t...
2001 GMC Sierra 1500 SL 4.8L steering pull VIN: 1GTEK19V51
I am woking on this truck has a pull to the right will pull you off to the side of the road within a few secounds at higer speeds pulls without touching the brks i have swapped front and rear tires from left to right no change ride hieght measurement ok swappe...
2006 Isuzu N NPR 5.2L No Start, MIL Lamp on VIN: JALC4B1666
Vehicle was towed in, engine shut off while driving now just cranks & will not start. We are able to start with either after engine runs for 3 minutes or so sets trouble code P0093 for Large leak? Pressure is normally around 5000 psi & conditions for setting t... Trouble codes: P0093 (large fuel leak)
1991 Jaguar XJ6 Sovereign 4.0L Hazards (4 ways) VIN: SAJHY174XM
This is my personal car, just bought it to replace my last XJ6 that encountered a deer on the highway,, I bought it had to repair ignition tumbler, and install new battery, as soon as the battery is hooked back up,, the Hazards start flashing, get in lock unlo...
1996 Jaguar XJ6 4.0L No Start VIN: SAJHX1747T
got this one from the auction last year- was running good, boss using it, parked for winter, tried to start in snow- crank and crank, no start- came back later, fired right up..sat again, few weeks, crank and crank and crank, no start- walk away, go back, fire... Trouble codes: N0NE
1998 Jaguar XJ8 4.0L No Start VIN: SAJHX1244W
We pulled this car in to replace the Transmission. It started but ran rough for an minute. We though because it had been setting for a while (approx 2 Months) as the owner was trying to decide wether or not to replace Trans. Long story Short. We replaced trans...
1997 Jeep Grand Cherokee Limited 4.0L No Start, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1J4GZ78SXV
[...] Trouble codes: P0351 (Ignition control circuit)
2004 Jeep Liberty Sport 2.4L Blend Door VIN: 1J4FK48174
Vehicle came in for no cold air out of vents (100 Degrees). AC compressor cycles normally, hooked up gauges and pressures look normal - 175psi High and 10psi Low. First thought that came to mind was to check blend door operation, Identifix said to check wires ...
2003 Land Rover Discovery SE 4.6L No Start VIN: SALTY16423
Hi, everyone this suv was droven in ! customer complaine sometimes when he go to start nothing hapen he have to try ignition off and on until it start up. No engine lihgt on and no code , took us three days to duplicate the problem.!! starter is fine, starter...
2004 Land Rover Discovery SE 4.6L Right Front sensor VIN: SALTY19494
Front right ABS sensor code 89 low output.
1994 Lexus ES300 3.0L Hesitation, Cuts out, Stall VIN: JT8GK13T8R
Doing a charity job on a worn out es300. Car will run fine when cold. Once it warms up check engine light will come on and car acts like it is starved for fuel when you try to accelerate (bogs down). It will also just shut down. Most times it will restart. Fue...
2000 Mazda Protege DX 1.6L engine VIN: JM1BJ2225Y
noise seems to be present around timing cover area, subsides when a/c compressor cycles on , we did timing belt,water pump. anybody seen this problem before.? noise was there prior to us doing timing belt and water pump.
2006 Mazda 6 i 2.3L Surge VIN: 1YVFP84C96
This mazda came in with surge on light acceleration.It feels like a torn air intake boot.I checked and cleaned the mass air flow sensor,i tried a known good mass air flow sensor.I disconected the egr valve,i smoke tested the intake for vaccume leaks,they are k...
2002 Mercedes-Benz ML320 3.2L Electronic VIN: 4JGAB54E62
Good Day All, I need some help resolving this problem child.Intermittently the bas esp and abs lights stay on on start up with a code c1401.I tried running the pump motor by jumping out the relay and it runs every time I try. Replaced the relay but no help. W...
2004 Mercedes-Benz ML350 3.7L Door Lock,Power Seat,Power Mirror,Turn Signal VIN: 4JGAB57E34
From time to time when driving power door lock,power mirror ,power sear ,turn signal stop work after pass by a bump everything go back to normal . Can't duplicate the problem long enough to tent .any suggestion? thank you all.
2005 Mercedes-Benz S55 AMG 5.5L A/C Cooling System VIN: WDBNG74J55
Hey there guys. I have a 2005 mercedes s55 amg with an a/c issue. System blows ice cold air, but when driving for about 30 minutes to an hour, warm air starts coming from the drivers front a/c vents. I can cylce the key off and then right back on, and system i...
1995 Nissan Pickup XE 2.4L Poor Idle Quality, Cuts out VIN: 1N6SD11S1S
I want to thank everyone in advance.
1997 Nissan Altima XE 2.4L Odometer
Customer states that vehicle accelerates slowly from a stop, no power. Upon test driving vehicle I noted that the O/D light illuminated for 2 seconds, flashed 16 times, and continued to stay illuminated. I cycled the OD switch on/off and the light stayed out. ...
2002 Nissan Maxima SE 3.5L Battery VIN: JN1DA31D42
Hi guys. have this altima that has a intermittent battery drain. has set in shop for 5 days with no trouble then customer takes and it has a dead battery within a day or 2. back in shop and thought had a .5 amp draw then draw was gone. sat in shop for 5 days a...
2002 Nissan Altima S 2.5L Compressor controls VIN: 1N4AL11E82
Hi, This system will cycle on and off but be off more than on. As a result the vent temp is not cold enough. The charge is correct & the air has been vacuumed out of the system. The controls visually appear to work properly. The wiring diagram indicated the co...
2007 Nissan Versa SL 1.8L abs VIN: 3N1BC13EX7
had c1102 and c1106 found opn l/r wss replaced. now dtc c1106 is gone but c1102 remains. modis has limited info. unsure of what may be causing issue. any help appreciated
2004 Pontiac Aztek 3.4L Oil VIN: 3G7DA03E34
Thanks in advance for any help. Customer had vehicle towed in with oil light on and lifter noise. After installing mechanical oil pressure gauge, showing zero oil pressure, I recommended replacing oil pump. Old oil pump seemed sloppy and shaft looked fine. Ins...
2009 Pontiac G6 GT 3.5L LF seat belt pretensioner VIN: 1G2ZH57N49
This car comes to us from a body shop. They had already replaced the LF pretensioner twice. Alldata says to unplug pretensioner and install 2ohm resister in connector clear code. If code stays off replace pretensioner. Code clears with resistor. Replaced prete...
2008 Porsche Cayenne S 4.8L MIL Lamp on VIN: WP1AB29P78
Hey guys, I have this recurring code that has no description other than "0004 upper limit exeeded". There are no issues with the car at all. Client states that the mil light will come on for a few days, then go off. I'm using durametric software and this is al... Trouble codes: 0004 (upper limit exeeded)
2004 Toyota Matrix XRS 1.8L high idle VIN: 2T1KY38E54
I've done everything possible to aliviate these high idle, no change. initial concern was vehicle dies randomly slowing from a fast speed, had code po505 idle air problem, smoke tested passed no leaks, replaced iac for possible sticking, now idles at around 11... Trouble codes: P0505
2006 Toyota Tacoma 2.7L Computer VIN: 5TETX22N26
Hello all, This one has me stumped. Truck came in for exhaust leak and code for catalyst efficiency below threshold. Cat was cracked and B1S2 (post cat) showed 0 Volts. Replaced cat and OHM checked O2 sensor. Checked ok. Checked all four wires up to the comput...
1996 Volkswagen Jetta GL 2.0L AC Compressor-High side pressure to low VIN: 3VWRA81H1T
Thanks in advance to all. I have this VW here with some wierd ac issues. First the compressor, expansion valve, and drier have all been replace. 4 times with the expansion valve, and 3 times with the compressor. Problem is my high side pressure is 90-100 psi a...
1999 Volkswagen Beetle GL 2.0L speedometer VIN: 3VWBA21CXX
Customer thought trans was not shifting right. I hooked up VAG and test drove. All shifts were normal incl. TCC. While discussing w/cust. RPM to vehicle speed. he said at just under 60 MPH. tach was regeristering over 3500. Test drove again. and relized the sp...
2009 Volkswagen Jetta TDI 2.0L MIL Lamp on VIN: 3VWRL71K29
Check engine light is on. Cleared the codes and as soon as you turn the key on it resets. Scan data on our snap on scanner doesnt show a pid for exhaust pressure sensor. Check the output of the sensor with a volt meter, it is reading zero and has no change. Th... Trouble codes: P047C, 01148 (VW exhaust pressure sensor 2 short to ground)
1998 Volvo V70 X/C AWD 2.4L oil consumption VIN: YV1LZ5646W
Long history of oil usage. Started at another facility in conjunction with a head gasket change due to a broken timing belt tensioner. They had replaced valve seals and changed the turbo twice. We inspected with borescope determined wet pistons and replaced ri...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Aston Martin DB7 Vantage 6.0L Misfire VIN: SCFAB4235Y
replaced all coils and plugs lots of work if had to go in again. can only get the coils from a dealer tryed to match the motorcraft number and talked to motorcraft supplier and the number is dealer
1989 Cadillac Allante 4.5L Excessive Emissions VIN: 1G6VR3182K
Thanks to all who replied to this help request. After an oil change and installing a 160 degree thermostat, readings stayed the same. We finally retarded the timing back to 6 degrees which richened the mixture enough to reduce the nox while keeping HC and CO w...
2003 Chevrolet Venture LS 3.4L Misfire, MIL Lamp on VIN: 1GNDX03EX3
Thank you to all that replied. John, Thomas, and Michael hit the nail on the head. The intake manifold had a crack internally. It is amazing how you can go thru everything in your diagnostic arsenal and still mis something so basic. Pulled the pcv and found th... Trouble codes: P0300.
2007 Chevrolet Silverado 3500 HD LT 6.0L No Start VIN: 1GBJK34K77
After going over every power and ground at the BCM, we replaced the BCM and the problem was fixed, I did check the BUS with a scope all looked great. the under hood fuse box was disconnected and not reinstalled correctly, use extreme caution when removing this... Trouble codes: U0140 (Loss of Communication with BCM).
1996 Dodge Ram 1500 Truck 3.9L No Start VIN: 1B7HC16X2T
Thanks for all the replies. As always the responses were great and covered a variety of possibilities. Chris, Brad, and Don hit it on the head with this one. Initially I must have missed that communication was reestablished with the 5v reference circuits unplu...
2004 Dodge Grand Caravan SE 3.3L Left rear wheel speed sensor VIN: 1D4GP24RX4
Thank for advice customer did not want to replace sensor but next time I get this complaint for this vehicle I will check ground abs wire on smallest volt scale on scope
1997 Ford E-350 Econoline Club Wagon Custom 7.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTJE34F6V
This one is fixed, a new idm fixed it, it runs perfect now. Thanks for all of the replys Trouble codes: P1316, P0267, P1298, P0263, P0267.
1997 Ford F-250 XL 7.5L oil pan VIN: 1FTHX26G8V
Thanks to everyone who offered help or suggestions. the problem turned out to be back to the basics..After closer evaluation the leak was proven to be the rear main not the pan gasket. the cause of repeated leaking was bad bearings. The customer elected to in...
1999 Ford Mustang 3.8L engine VIN: 1FAFP4047X
I apreciated all the people take time to help me.specially to Dario [...] they hit the nail was the cranck shaft pulley.I turn the the pulley and almost come out. thanks IATN.
2001 Ford F-350 Super Duty Lariat 7.3L Fluid VIN: 1FTSW31F31
Well I talked over with customer and gave him different options and discussed what he wanted to do, he was going to leave it alone but it did leak again shortly after so as many of you suggested we decided to just replace torque converter seal, old seal was no...
2004 Ford Focus ZTS 2.3L Misfire VIN: 1FAFP38ZX4
PCM. nuff said? bad output driver, wsent to ford for pcm and reflash. thanks again for all of your help. kg Trouble codes: P0302.
2006 Ford Taurus SEL 3.0L Stall VIN: 1FAFP56U16
Most of the replies I got had to do with things like ignition switches and battery cables but I found no problems there and I would think a total loss of power would change the monitors to incomplete. One person suggested the anti-theft module and this was rep...
2005 Land Rover Range Rover HSE 4.4L charge indicator light VIN: SALME11425
The problem looks to be a bad circuit in the PCM their is communication between the PCM and the alt the PCM reacts to load inputs and the charge rate is fine.A new PCM is a dealer only item @ $1600.00 and is on national back order as well the customer didn't ...
1999 Lexus GS300 3.0L Cuts out, MIL Lamp on VIN: JT8BD68S4X
The Lexus dealer diagnosed it as a faulty throttle body. They are installing a replacement part. Trouble codes: P1120 (VPA and VPA2).
2005 Lexus GX470 4.7L MIL Lamp on VIN: JTJBT20X85
I am going to cross my (now bloodied) fingers and call this one fixed. I replaced the pump & both #2 ck valves. Thanks for the good info on a bad system. I posted this request because I didn't really find anything wrong with my bench testing. ( I did hook the ... Trouble codes: P1442, P1445 (Air inj sw valve 2 stuck cloased b/2).
1994 Lincoln Continental 3.8L Parking Lights VIN: 1LNLM9749R
Thanks for the help. The keyless entry module was the problem, I was just concerned that something shorted and caused the module to fail, I spent alot of time testing circuits to make sure it did'nt burn up the new one, we plugged it in and now all is working ...
2002 Nissan Altima 2.5L Starting VIN: 1N4AL11D72
2005 Nissan Altima S 2.5L No Start VIN: 1N4AL11D35
THANK'S TO ALL, We ck'd the wave form in the car after we reinstalled the crank sensor and it preformed AS it should ,the car fired right up every time after that! The only thing we can think of ,is perhaps the air gap some how was not correct or blame it on ... Trouble codes: P0355.
2007 Pontiac G5 GT 2.4L MIL Lamp on, High idle VIN: 1G2AN15BX7
2001 Saturn L300 3.0L No Start, Hesitation, Stall VIN: 1G8JW52R41
so the car is not fixed but i did get it to start every time by having the temp sensor unhooked or if i jumped the connector so i installed a new temp sensor and it still does the same thing. but as soon as i unhook it it starts right up any ideas why this mi...
2003 Saturn L200 2.2L Condenser Cooling Fan VIN: 1G8JU54F83
2005 Saturn Vue 2.2L MIL Lamp on VIN: 5GZCZ33D95
Well,they sold the car with the check engine light on. The car obviously came back to my stall again. I told the management that there was nothing I can do,so I recommended the GM dealership. The vehicle was fixed with a gas cap. I was never able to get any ev... Trouble codes: P2000 (Nox trap efficiency bank 1).
1994 Toyota Camry LE 2.2L No Start
Well first of all a big thank you to all of you guys who took the time to reply to my help message ,you guys are all terrific and extremely knowledgeable on Toyota cars.I checked just about everything you guys told me to check but unfortunatly the owner of the... Trouble codes: 14.
1998 Toyota Sienna CE 3.0L water pump VIN: 4T3ZF19C2W
Thanks to everyone and your quick response. Initially I had replaced the termostat, Applyed a vacuum to the cooling system and "sucked" coolant back into system Over heat condition still occoured. I then "rigged up" a system to allow for a coolant fill funnel....
2006 Volkswagen Jetta TDI 1.9L No Start VIN: 3VWNT81K26
thanks to all ,graeme nail it ,my tech install rear seal without timing it.retime the crank sensor start right up thanks again
2010 Volvo S80 3.2 3.2L power windows VIN: YV1960A55A
I would like to thank you all for the responces. I used my Vida today and was able to reset the windows with no issues.
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