Automotive Technicians Technical Discussion and Fixes for Mar 23, 2012

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	Help Request	Answers
	1988 BMW M6 3.5L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1988M63577 This vehicle came runnung horribly. it is getting was tooo much fuel at idle as to where it wont even idle. hitting the gas will clear it up. Cust, has replaced throtle switch, o2 sensor , pump and computer ... Voltage from airflow meter seems right on the mon...	View
	1996 BMW Z3 Roadster 1.9L Fuel gauge VIN: 4USCH7320T OK Guys...this is a weird one, The fuel gauge operates properly in reverse only...put the gear select lever in any other position and it goes to empty with the red warning light on. Turn the headlamps on and the gauge operates properly in every gear selection...	View
	1997 BMW 528i 2.8L rear speed sensors VIN: WBADD6320V hello,this 1997 528i came in with inop rear wheel speed sensors.The customer had both rear wheel bearings replaced at another shop and now both rear sensors are not working. My question is about the tone rings[or lack of]on this vehicle.There are no tone ring...	View
	2009 Buick Enclave CXL 3.6L No Start, blows ecm1 fuse VIN: 5GAER23D99 Came in on the hook with a blown ECM1 fuse. (F28 is by the ECM1 fuse in the under hood panel) You would think it would be a piece of cake to trace down a constant drain, but there are ground wires that run three different ways to three different areas and all ...	View
	1984 Chevrolet Corvette 5.7L Poor Idle Quality VIN: 1G1AY0785E Have a Corvette we are changing from the Crossfire to Carburetor, have everything except a Fuel Regulator with a return line to fuel tank. Having trouble locating one, hoping someone has done this and has a part number. Thanks for your help...	View
	1999 Chevrolet K3500 6.5L Excessive Emissions VIN: 1GBHK33F4X This truck Has a long crank after it is warmed up. Upon looking observing the data I found the ECT reading negative 40. I tested the 5 volt refrence and ground wires at the sensor both are good. I checked the 5 volt refrence wire for a short to anny other 5 vo...	View
	2000 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55K6Y I have this Impala that will not crank at times. I could not duplicate the problem so I connected some lights on the crank request circuit and starter relay output and removed the remote start interface module. That test found voltage on the crank request circ...	View
	2001 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 1G1JC12451 Originally replaced rear main crank seal and rear camshaft plate seal. Vehicle came back with 2 codes - system too lean and oxygen sensor circuit codes. Found oxygen sensor stuck at 200 mv - replaced, cleared and tested at idle with no problems. Car came back ... Trouble codes: P0172 (System too rich bank 1)	View
	2006 Chevrolet Express 2500 4.8L No Start VIN: 1GCGG29V16 Hi guys, I hope you can help with my newest nightmare. This van came in for a no start. found 14 codes in pcm, 8 for o2 sensors, 2 evap, 3 trans codes and the p0300. After clearing the codes and recranking the engine the only codes that come back are 2 o2 heat... Trouble codes: P0300 (Random missfire), P0030, P0050, P0053, P0059, P0449	View
	2004 Chrysler Concorde LX 2.7L Ac Relay - PCM VIN: 2C3HD46R34 Help all Chrysler guys Todays Project in March believe it or not is a simple a/c engage problem driving me nuts this Chrysler has no code in the pcm or bcm this is manual a/c & has no HVAC codes. The bcm has no pid for the a/c off on switch on every scanner we...	View
	2002 Dodge Dakota 3.9L Hesitation, Cuts out, Misfire vehicle was brought to me after others installed above parts, unable to fix, vehicle will intermitly no engine power at full throttle, will pop through throttle body when under load, vehicle idles perfectly, engine vacumme will go to less than 1 inch when at 3... Trouble codes: P0132	View
	2004 Dodge Ram 2500 ST 5.9L Cruise Control VIN: 3D7KU28C74 Cruise control shuts off when going uphill (happens all the time when going over an overpass)works fine going down flat highway,when it shuts off it can not be reset again until the truck is turned off and restarted, scan tool data shows that brake switch and ...	View
	2004 Dodge Sprinter 2500 2.7L No Start, Cuts out, Stall VIN: WD5PD64494 Aux. Fan runs and simultanous glow plug light doesn't go out and no engine cranking. Happens intermittently. Remove FB1 fuse 18 fan goes off. Fuse #18 supplies power to ECM Cluster Airbag mod. and Ign switch start run relay. Unhooking all of these have no affe... Trouble codes: 16102, B1040 (0- CAN Comm at ECM faulty...KI), 5508 (CAN Comm ECM faulty...ESP)	View
	2005 Dodge Sprinter 2500 2.7L no start VIN: WD0PD64425 the firt time vehicle came in , customer was driving down the road and the instrument cluster froze at 60 mph and all gauges froze , went into limp mode and once turned off did not restart.this time trans went into limp mode and did not restart. vehicle was in...	View
	2005 Dodge Ram 1500 ST 4.7L Poor Idle Quality, Stall VIN: 1D7HA18N75 Vehicle dies out at idle in gear and have to two foot to keep running.Check for vacuum leaks all vacuum lines okay.Idle seems low in park.Doesnt do all time but happens but quit often.Cleaned throttle body and isc motor and reset isc with scan tool.Still have ...	View
	2001 Ford Windstar SE 3.8L No Start VIN: 2FMZA52461 hello fellow techs - i have an 01 windstar with an odd problem... after a short ride - turn the van off and will not start - do not hear the fuel pump pressurize - - let sit 20-30 mins - starts rite up -- only seems to happen when its warm out - - any help wou...	View
	2004 Ford Focus SE 2.0L Stall VIN: 1FAFP34384 This car cranks, won't start unless you hold your foot on the gas. Little old lady drives it. Throttlebody looks clean. This car acted up a couple of months ago for the first time, she was nearby, I drove it to the shop with heel/toe, after a couple of minutes...	View
	2006 Ford Fusion SE 3.0L Mechanical VIN: 3FAFP07146 Hi Guys and Gals, I need to replace the engine on this one and the book says out the bottom. Ive done taurus's out the bottom so no biggie however it looks as though this may have room to come out the top. Anybody tried that and had success or failure? Any and...	View
	1999 GMC C7500 Topkick C7H042 7.4L No Start VIN: 1GDJ7H1D4X Randomly crank no start when you let of the key it will backfire, cycle the key and it will fire right up and run smooth, cycle the key the next few times and it will start fine?? When you are cranking and it will not start and you inject propane it will start...	View
	2003 Honda Civic Hybrid 1.3L Surge, Cuts out VIN: JHMES96623 Vehicle came in w/ complaint of buck/hesitation. Test drove confirmed at 20 mph buck is pretty obvious. Using master tech scanner while monitoring misfire counts scanner says cyl #1 several counts. I have replaced both sets of plugs, swapped ignition coils, pu...	View
	2006 Honda Civic EX 1.8L engine VIN: 2HGFG12826 please help honda techs. i can't find where the coolant is going on this car. the customer says it started getting hot on his way home so he parked it and left it for several hours. when we got it the coolant was really low. i filled it and pressure tested wit...	View
	2003 Hyundai Elantra GLS 2.0L No Start, Stall VIN: KMHDN45D13 I have a weird one here. Had the scope on it all day and have come up empty. ALL grounds on engine, battery and connections cleaned and tested. Total voltage drop now .02V. Taking over from my boss as stated in : related repair history. It DOES NOT feel like r...	View
	1999 Jeep Grand Cherokee Limited 4.7L battery VIN: 1J4GW68N8X Ok, this is one of the classic battery drain issue which i can't think of any obvious. I replaced alternator because it is charging 13.62V and after shutting off the battery open circuit voltage is below 12.6 after few minutes. So after couple of days vehicle ...	View
	2000 Jeep Grand Cherokee Laredo 4.0L trans VIN: 1J4GW48S6Y I could use an interpretation of mode 6 data items 01-31, 51, 53, 62...thanx, bill	View
	2003 Lexus ES300 3.0L Surge VIN: JTHBF30G03 Car surges between 2K and 3500 rpm, happens during accel from stop, no codes, all readiness passed, checked air filter and MAF both were dirty, cleaned MAF, blew debris out of airbox(not much) replaced air filter with new. Now feels like surge is worse. Checke...	View
	1993 Mercedes-Benz 400SEL 4.2L Stall VIN: WDBGA43E4P Customer bought the car from an auction the car runs great till it warms up then it dies. It will start back up and run for a few seconds and stalls will not.run untill it cold. any ideals? I dont have a scanner to pull code but no check engine lights are on. ...	View
	2001 Mercedes-Benz E320 3.2L compressor VIN: WDBJF65J11 I have no compressor function. With Autologic I have no communication with A/C module and will not enter self diagnosis. Checked power and ground and replaced module with reman unit. Performed coding and now have communication but also have 2 hard faults, B122...	View
	2002 Mini Cooper S 1.6L MIL Lamp on VIN: WMWRE33482 Greetings everyone, We have this mini which will go into limp in mode after about 10 mins of driving and set the p1125 code. after the first time of the day the code will return almost immediately after clearing.The eml light also comes on at this time. We re... Trouble codes: P1225	View
	1995 Pontiac Grand Am SE 2.3L MIL Lamp on, no communication is there any way to scan this vehicle without a tech1, the aldl is a 12 pin and does not have a wire in b, has the ground in a and 2 wires directly below a & b, no other wires in the aldl, have tried everything i can think of to get a scanner to work-different...	View
	2003 Saab 9-3 SE 2.0L Internal shift mech VIN: YS3DF75K93 Help!! I Put a clutch in this Saab, put trans back in, was finishing up, went to hook up the shift linkage and noticed that the shift rod sticking out of the trans looks to be in neutral. I put the trans in 4th as usual when I took it out. I do not use the loc...	View
	1998 Toyota Tacoma DLX 2.4L MIL Lamp on VIN: 4TANL42N8W I have replaced the VSV valve that operates the EGR valve as some prior posts have recommended. I have also removed the EGR pipe and valve to check for restrictions/clogs and I didn't find any. The EGR valve appears to be working properly (will stumble @ idle ... Trouble codes: P0401 (Insufficient EGR Flow)	View
	2002 Volkswagen Jetta GLS 2.0L Pedal VIN: 3VWSK69M12 This is one is likely the master cylinder. But, it doesn't feel like a typical bad master, so I want to throw it out there before I just throw the part at it to find I missed something potentially obvious. The pedal feels EXACTLY like rear drum brakes out of a...	View
	2002 Volvo S60 2.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: YV1RS61R42 This car is a sublet from another shop. Arrived in limp mode. Would not accellerate. Found vacuum leak at oil trap. replaced oil trap & throttle body. replacement throttle body is used part of same year and model. Now when the car starts idles at 2000 rpm for ... Trouble codes: P0507 (Idle speed higher than expected), P2177 (Lean mixture)	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2001 Audi A6 Quattro 2.7L Excessive Emissions, MIL Lamp on VIN: WAUED64BX1 Hello all...sorry, thought I'd closed this one. Most all of you were right on. Changed the MAS and the problem went away. Thanx Again - Bernie Trouble codes: P1139 (Excessive long term fuel trims).	9
	2008 Audi Q7 Premium 3.6L rear hatch VIN: WA1BY74L38 Thanks for the replies, it seems this isn't exactly a common issue but I had suggestions for the first bad key causing it and wiring problems. I had wondered about the first key sending an erroneous unlock signal to the hatch, so once the customer found a se...	3
	2000 Chevrolet Silverado 1500 5.3L No Start, Cuts out after performing voltage drop tests i found that the pump ground to the left frame bracket (in frontof the canister vent)had high resistence, cleaned frame mounting point along with groud bolt & eyelet, also checked & cleaned & retiightened ground on right cyl...	5
	2003 Chevrolet Monte Carlo SS 3.8L Starting VIN: 2G1WX12K63 Checked everything ended up being a bad BCM it would go to sleep and seemed like it would not wake up.I Thank everyone for their help	11
	1996 Dodge Ram 1500 5.2L brakes VIN: 3B7HF13Y4T This one's fixed. Had an overwelling amount of feedback on this one. Thanks. First we tried bleeding air out rf caliper. Flow seemed ok. Still no difference. Replaced rf brake hose. Still no difference. Noticed that rotor hub was a lot hotter on drivers side t...	34
	2009 Dodge Challenger R/T 5.7L Dead Battery VIN: 2B3LJ54T49 The key to this was catching the draw in the act. All recalls had been done, it already had the bigger battery, The Remotes were always more than 30 feet from the vehicle. We had the radio updated from Software level 2.302 to 2.402, but no help. We were having...	13
	2000 Ford Expedition XLT 4.6L severe thud sound VIN: 1FMRU1666Y I need to close this request since time is running down. I will update with a fix once vehicle is repaired. I had may responses, and I thank you for the time. Most pointed to the tires, which must be near exact diameter. In other words, they must be replaced...	21
	2003 Honda Accord EX 2.4L Engine VIN: JHMCM56603 We replaced all the motor, upper and lower transmission mounts with Honda factory mounts. It is a smooth as glass. The mounts we originally installed where from an aftermarket source and listed as OE. We did not change one at a time to find out which one it wa...	7
	2003 Honda CR-V EX 2.4L Abs Sensor VIN: JHLRD78853 The replies were helpful, but the wheel sensors operate a little differently than the ones previous to'03. We learned that at each wheel we could measure aprox 11 volts and a ground at each wire plug terminal when the sensor is unplugged. The sensor seems to b...	5
	2005 Honda CR-V LX 2.4L No Start VIN: SHSRD68595 Well thanks for the help this crv is fixed. I went back and checked all fuses again rechecked the wiring I had repaired at the canister and all looked good... Bit the bullet and put an ECU in starts and runs perfect... Also fixed the P0453 Thanks again!! Trouble codes: P0453 (FTP sensor circuit high voltage).	4
	2004 Jaguar X-Type 3.0L Unknown VIN: SAJEA51C44 Thanks for the help. There was a post prior to my post that said he changed the filter inside the front cover, and the noise went away. That was compleatly wrong and impossible. I sold a service based on this post. Made me to look the fool after convincing t...	6
	2007 Jeep Commander Limited 5.7L headlights VIN: 1J8HG58247 Erased DTC's, removed & restored battery connection, and problem did not recur. Customer has had for a week without return. Will consider this one to be intermittent computer malfunction.	5
	1996 Land Rover Discovery SD 4.0L MIL Lamp on This car is not yet fixed. We sent the ecm to BBA Reman to have it repaired and they said they repaired failed drivers for the ignition coils 2 and 4 which are the ones we had faults for. Installed ecu, cleared all faults and the same faults returned immedia... Trouble codes: P1372 (early ignition coil activation coil 2 cyls. 58), 1374 (early ignition coil activation coil 4 cyls. 23).	8
	2004 Lincoln LS 3.0L interior lighting VIN: 1LNHM86S74 The customer came in to check my progress. He pointed out that a buzzing sound from the dash as the lights would turn off was not there before he had a Viper alarm system installed. He said that the alarm had been disconnected. I went to where the buzz was ...	2
	1975 Mercedes-Benz 450SL 4.5L No Start, Poor Idle Quality, Stall Sorry for the delay. I got a number of good responses and even spoke with a member on the phone. I have this pig running pretty well after a number of repairs. I replaced the fuel and fuel filter, the ignition points, cap, rotor and plugs. I also replace the t...	9
	1990 Subaru Legacy L 2.2L Tach stops working VIN: JF1BC6323L I would like to thank everyone for there replies on this problem. I have been sick for sometime so no one at the shop followed up on talking with the owner of the car. They took the car home intill I was able to get back to the shop and talk with them. After t...	3
	2006 Toyota Avalon XLS 3.5L No Start VIN: 4T1BK36B46 Well this car is being returned to the customer not fixed. We where later advised that this was a flood salvage car which we kind of suspected. The owner basically wanted to nail us down to a set charge to diagnose this vehicle, Which we are not willing to do.... Trouble codes: P2799.	8
	2000 Volvo S80 2.9 2.9L HVAC Panel VIN: YV1TS94D2Y Thanks to all that responded - the conclusive answer here is that the original unit was fried - some additional information though: You can use a used CCM with these vehicles, it just has to be fairly close to the software level that's in the CEM. You can ensu...	3
	2006 Volvo S40 2.4i 2.4L Hesitation, power loss VIN: YV1MS39096 Hi guys and gals. well, the pcv trap tested ok on this volvo, no change in rpm with dipstick removed, no change in sound. the owners needed the car, so they came and picked it up. sorry for an inconclusive result. if car returns i'll add any relevant notes her...	7

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