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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 20, 2013
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for All Makes and Models
Help Request Answers
1999 BMW 323i 2.5L MIL Lamp on VIN: WBAAM3336X
Customer brought the vehicle in limp mode with p0601 and p0120. We sent the throttle body to BBA reman, which I have done a lot of business with and has always been outstanding. There was no problem found and we re-installed. We also replaced the ECM/DME with ... Trouble codes: P0601, P0120
2003 BMW 745Li 4.4L Poor Idle Quality, Misfire, MIL Lamp on
Hi everyone, I have this bmw 745li with 237k miles! It has a misfire on cylinder 4. It has new spark plugs and coils, which cured misfires on 2 other cylinders, but cylinder 4 misfire remains. I have swapped the injector with the adjacent cylinder and the miss...
2008 Cadillac Escalade 6.2L Lift gate VIN: 1GYEC63878
Lift gate motor inop. tested powers and ground = ok, tested switch in door = ok. removed motor from lift gate gear box. motor works good.remote door lock works good, I am having trouble testing limit switch. cant find any TSB's in all-data. call my gm tech, he...
2004 Chevrolet Suburban 1500 LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEC16ZX4
Hi there, This vehicle has a miss on every cylinder on the driver's side. TSB's indicate a possible intake manifold gasket leak. I can't confirm the leak with any testing so I thought I would ask before tearing into it. What is the likelyhood that it is the pr... Trouble codes: P0171 (Lean bank 1), P0300 (Miss)
2007 Chevrolet Impala LT 3.5L fuel gauge VIN: 2G1WT58K07
Hello, We have a problem with the fuel guage. The customer stated that when it gets down to a 1/4 tank it runs out. The problem is it does not do this all the time. We replaced fuel pump and module-level sensor asm twice. The last time the custmer stated that ...
2010 Chevrolet Suburban 1500 LS 5.3L Poor Idle Quality VIN: 1GNUKHE3XA
Mil is not on, however, vehicle still runs slightly rough at idle, usually when hot, idling in gear. I am a Subaru specialist, not up to speed on GM, but consented to look at vehicle. Wondering if vehicle has multiple problems or does it have an issue that is ... Trouble codes: P0011 (intake cam position), P162B, P0131 (O2 signal low B1S1), P0133 (signal slow B1S1), P0137 (O2 signal B1S2)
1999 Chrysler 300M 3.5L Stall VIN: 2C3HE66G6X
I'm having a little trouble with this fine Chrysler product. Customer stalled coming home from work and tried to limp it to our shop before killing the battery and needing a tow. He was able to start it a couple times and feather the gas to get a little closer...
1998 Dodge Ram 1500 ST 5.9L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Stall VIN: 1B7HF13Z3W
Pops & missfires while cruising when problem occurs. Hit accellerator & runs fine.
2002 Dodge Ram 1500 ST 4.7L Poor Idle Quality, Surge, Stall VIN: 1D7HU16N22
This problem is being very elusive. Hope it's OK to post here with links to TDF where there are many posts and replies, and videos describing this strange problem. Hoping to bring more attention to this puzzle this way.. thanks to all, we'll all be much enlig...
1980 Ford F-150 Custom 5.0L carburetor VIN: F14FUHA464
done a tune up on an old school ford truck and found a vacuum leak at intake under the carburetor repaired leak no start unplug port and truck starts and runs fine. I put my hand over top the carburetor while running and the engine never stalled or try to pull...
1991 Ford F-250 Custom 7.3L Rear Brakes VIN: 1FTHF26M6M
Left rear wheel locks up when brake is applied. I've tried everything I know.
1993 Ford Explorer Eddie Bauer 4.0L No Start VIN: 1FMDU34X3P
Here we go, 1993 Explorer with 80000 miles, yes 80000 miles! this suv came in to us on a hook with a crank no start condition. has good fuel pressure, fuel pump kicks on for about 3 seconds when you turn on the ignition then goes off like it's suppose to. I di... Trouble codes: 211 (profile ignition pickup erratic), 214 (cylinder id circuit fault)
1997 Ford F-150 XL 4.2L Hesitation, Stall, no power VIN: 2FTDF0822V
OK this one is making me crazy. Before you read too far, I am suspecting a fuel volume issue, but can't find a spec for it, so if anyone knows, please let me know. Other than that, here is the sorted story: I inherited this truck after some unknown shop of bac... Trouble codes: P1537, P1538
2000 Ford F-150 4.6L No Start VIN: 1FTRX18WXY
Vehicle came from another shop, thay replace PCM for no communication to PCM, dash milage goes blank and theft light flashing. After PCM was replaced vehicle ran fine for three weeks. Customer said he hit rail road tracks and vehicle died. Exact symptoms, Othe... Trouble codes: U1262 (SCP data fault on J1850 Bus), U1147 (SCP data fault for vehicle security)
2002 Ford F-550 Super Duty XL 7.3L MIL Lamp on, no start hot VIN: 1FDAF57F52
Hi Iatn, I'm looking for some input on this truck...This is my 1st diag on a oil fired injection system,It will run in the bay all day long and drives fine with good power...Pulse width on pressure regulator goes to 65 on cold start and icp pressure is around ... Trouble codes: P1211 (ICP below/above desired pressure)
2006 Ford Fusion SEL 3.0L Misfire, MIL Lamp on VIN: 3FAFP08186
Vehicle came in with random misfire, and codes for front bank misfires. 4, 5, 6. scanned computer and observed bank 2 downstream O2 sensor flatlined. Installed new sensor and ran self test with normal operation. Vehicle returned with same codes and O2 flatline... Trouble codes: P0304 (No. 4 misfire), P0305 (No. 5 misfire), P0306 (No. 6 misfire), P0300 (Random misfire/misfire on start-up)
2007 Ford Escape Limited 3.0L 1-2 and 3-4 shift VIN: 1FMCU94127
Setting p0734 and p0732, flashing o/d light when driving. Driving the vehicle I have 1st gear and 3rd gear. I have checked wiring,(no opens, short to voltage or ground and illuminated headlight the check power) solenoid operation ( both solenoids A and B amper...
2008 Ford E-350 Super Duty 5.4L Misfire, MIL Lamp on VIN: 1FTSE34L08
The vehicle came in barely able to accelerate. The DTC's were P0300, P0305, P0306, P0307. We replaced the spark plugs and it reset a P0305. We replaced the #5 ignition coil and tightened the pins in the #5 coil connector. We cleared the codes and test drove th... Trouble codes: P0305 (Misfire Cylinder 5)
2010 Ford Escape Limited 3.0L steering rack VIN: 1FMCU9EG4A
this vehicle has a binding problem in the rack it seems. when backing up with the wheel turned sharply either way, it seems as though the p/s motor is not giving enough assist and the steering wheel is hard to turn the opposite way at first. we have replaced t...
2007 GMC Acadia SLT 3.6L Breather System VIN: 1GKER337X7
Thanks for help in advance. This vehicle came back after 4,000 miles for an oil change and intake tube was full of sludge again. Re-cleaned and spent more time verifying breather flow. Added some ATF in with oil as a mild cleaner. Had customer back in 1,000 mi...
2007 Honda Odyssey Touring 3.5L MIL Lamp on, idles high VIN: 5FNRL38837
This is my personal vehicle and after performing 100k maintenance the engine idles high and check engine light comes on after 2 trips with code p2279. The van ran great before with no codes being set. I have double checked timing belt alignment and Valve adjus... Trouble codes: P2279
2003 Land Rover Range Rover HSE 4.4L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: SALME11443
Hi, trying to figure out the problem with the Range Rover I'm working on. It's 03 Range rover 4.4L engine. Car came with poor idle and sometimes cuts out. It has air mass sensor code which I can clear only key on engine off. As soon as I start the engine it co... Trouble codes: P0000
2003 Mazda 6 S 3.0L Poor Idle Quality, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1YVHP80D53
Hello and thank you in advance. Basically im trying to ignore and inevitable here and hopefully understand what went wrong. I just replaced the cylinder heads on this engine (my first set)and now i have a terrible idle quality and low vacuum. everything points... Trouble codes: P0340, P0345
1988 Mercedes-Benz 560SL 5.6L Poor Idle Quality, Misfire VIN: WDBBA48D2J
Engine idles very poorly/low, can feel misfire at all speeds. Verifed spark to all cylinders, initial timing good/ advance functioning, CIS plate moves smoothly. Smoke test revealed many bad intake hoses. Replaced eight hoses, now runs worse. Replaced old dist...
2002 Mercedes-Benz C320 3.2L wont engage VIN: WDBRF64J82
Hi Mercedes Techs, I just recently performed a routine trans service with filter, gasket, drain and fill with correct Mercedes fluid 6qts. All of a sudden, it won't engage in to drive or reverse. Did I accidently disenable something in the pan by mistake? Tha...
2012 Mercedes-Benz E350 3.5L soft top VIN: WDDKK5KF4C
trying to get the top down so I can install roll bars.Air bags have been replaced and the module (srs) has not been coded programed. but I am trying to install the roll bars before I send out to get module programed.all i need is the back part of the top to st...
1999 Mercury Grand Marquis LS 4.6L headlight VIN: 2MEFM75W8X
Vehicle came in with complaint of lights turning off by themselves at night. I suspected the LCM to be bad and purchased a Ford factory module. I plugged it in and had no interior lights, no outside lights, could not place into gear and no key in the ignition ...
2003 Oldsmobile Alero GL 3.4L Starting VIN: 1G3NL12E73
Hello techs, I need some input on this one. This Alero will not start after sitting overnight. If you give it a shot of ether, it will fire right up and runs fine. It will restart without a problem. It has no codes and all of the data pids look good. LTFT was...
1987 Porsche 944 2.5L cam housing VIN: WP0AB0949H
I need to replace the can housing gasket on this 944. Are there any pitfalls or advice on this job? I have done many timing belts but not the cam housing gasket in years. Thanks in advance. Greg iatn member since 1989
2003 Saab 9-3 Arc 2.0L Cruise VIN: YS3FD46Y23
Car came in with checksum error code. The vehicle would stall intermittantly and not restart for several hours. Replaced the ECM with a known good ECM same part number as old module. Removed old ECM and added the used ECM thru the Tech2 with security access. C... Trouble codes: P0601 (ECM memory check sum error), B1001 (45- AMP1 Control Module not added), U1500 (01- K-Line CIM-SCL Short to ground /B)
2005 Saturn Vue 2.2L No Start, MIL Lamp on VIN: 5GZCZ43D55
Good afternoon. 2005 Saturn Vue 2.2 Ecotec Auto. Vehicle cranks with no start. Check engine and wrench light on. Multiple U2105 codes present and stored. Gas gauge reads empty and fuel light on. Added 5 gallons of fuel. Checked all grounding locations 1. At EC... Trouble codes: U2105
2000 Suzuki Grand Vitara JLX 2.5L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: JS3TD62V3Y
Hi, I am looking for some help from the Suzuki techs out there . Have a 2000 suzuki with a 2.5 v6 come into the shop for a complaint of hesitation. Test drove it and it ran good for roughly 20 minutes then started to hesitate and barely run, soon after it kill...
2006 Toyota Tundra SR5 4.7L No Start VIN: 5TBDT44146
Vehicle was in for t belt service,after completion will not start.Will not crank,have no communication with ecm,check engine light does not come on when key is put in run position.Checked all pcm power and grounds and have batt voltage on all pins at e3 connec...
2008 Toyota Prius Touring 1.5L Dash warning VIN: JTDKB20U48
3 brake lights on dash are on as well as defrost light and tire monitor light on Looking for some ideas re all lights being on at same time. All brakes working fine and foundation are in good shape. Any help would be apprieciated. Thks Doug
2000 Volkswagen Passat GLS 2.8L cam timing VIN: WVWND23BXY
Hello gentlemen & ladies. [...] 2.8 had broken timing belt, we had a machine shop fix the valves. They had to remove the cams & looks like they marked the chain & sprockets. After the initial start engine was running pretty badly, throwing codes on both cam...
2005 Volkswagen Passat GLS 2.0L MIL Lamp on, Limp mode VIN: WVWAE63B65
We received this passat after programing the key to this vehicle for a customer. Vehicle goes into limp in mode as a result it have reduce power. I have checked the circuit to the boost pressure sensor With Out Load and With Load. Those were the test results o... Trouble codes: P1592 (18000 005522 Altitude sensor Boost pressure sensor implaussible ratio)
2001 Volvo V70 2.4L No Start VIN: YV1SW61R01
New customer. Towed in-died while driving. Restarted after dying-ran for a few minutes then died again and will not re-start. Checked the basics-fuel pressure and volume, spark-good, injector pulse-yes, compression-low-around 80 psi. Checked timing belt and it...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2002 BMW X5 3.0i 3.0L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 5UXFA53552
i replaced the intake adjuster unit the flap was broken and replaced the crankcase breather it took care of the problem . thanks to all that help me out... Trouble codes: P0300 (Random misfire), P0305 (Cylinder 5 misfire), P1344 (Cylinder 2), 13442 (Cylinder 1 misfire), P1349 (Cylinder 4 misfire), P1347 (Cylinder 3 misfire).
2005 Chevrolet Silverado 3500 6.6L Hesitation, MIL Lamp on VIN: 1GBJC33275
Wow, finally nailed this one! The injector harness had a break inside the insulation to # 7 injector. Replaced the connector from GM part #[...] $108.00. Priced out the complete injector harness it is part #[...] $487.00. Hope this can help someone alse.... Trouble codes: P0207, P0299, P2146.
2009 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F49
sorry for the late close. i wanted to make sure its fixed. i checked all the connections as many of you mentioned. all connections at the ecm and the throttle body were good. replaced the throttle body with brand new a/c delco did the relearn and a full driv... Trouble codes: P0121, P0171, P0300, P2119, P2135.
2010 Chrysler PT Cruiser Classic 2.4L Cuts out VIN: 3A4GY5F95A
Well sorry to inform all of you that the car stopped acting up. I drove it numerous times with a low amp probe on it trying to detect a spike in the 5v reference circuit to see if another sensor was shorting out but it drove perfectly every time. Since the c... Trouble codes: P0344, P0016, P0339.
1992 Dodge Spirit ES 3.0L trans in limp in VIN: 1B3XA7638N
The 3rd TCM fixed it.Bfore it was plugged in we did clean all grounds.Thanks for all input on this one Bob
2002 Dodge Stratus SE 2.4L MIL Lamp on VIN: 1B3EL36X22
Thanks for all the responses .I performed an injector flow test and found all injectors flowing the same .checked injector resistance all around 12.2 ohms .next checked MAP sensor voltage 1.8 volts at idle.Timothy from Wisconsin stated it should read between 1... Trouble codes: P0172.
2003 Dodge Ram 2500 5.7L Engine VIN: 3D7KU28D23
Customer did not want spend any more money so he took vehicle
1997 Ford F-250 Lariat 5.8L Turn signals, Flasher, Blower motor VIN: 3FTHF25HXV
Thanks everyone this vehicle is fixed. This is a case of listen to what your customer tells you, but confirm everything for yourself! Bill from Texas put me on the right track by going directly to the blower motor connector to figure out what I was losing. ...
2000 Ford F-250 Super Duty XL 7.3L Misfire VIN: 1FDNF20F3Y
Cam sensor was the problem. I found an old black Ford sensor and my ghost codes went away and PERDEL came down to .9% on #8 & .8% on #3. I then replaced it with a gray Napa Echlin CSS1103(some boxes had gray sensors some had black)and no ghost contribution cod... Trouble codes: P0284 (Cylinder 8 Contribution), P0269 (Cylinder 3 Contribution).
2005 Ford E-350 Super Duty 6.0L Starting VIN: 1FTSS34P35
Thanks for the help! Micheal was dead on I found a rub thru behind the pcm on the cowl close to the bulkhead for the ficm harness. Thanks again!
2006 Ford F-250 Super Duty XL 5.4L No Start VIN: 1FDNF20566
Thanks guys especially Tyler from Kansas. If you break down all the codes they all lead to the largest out of the 3 connectors on the PCM 1,3,5,7 injectors etc. It wasnt quite seated all the way down, now the truck runs great. Eric Trouble codes: P0053 (p0113-), P0113 (p0121-), P0121 (p0122-), P0122 (p0183-), P0183 (p0193-), P0193.
2008 Ford E-150 XLT 5.4L Hesitation, Misfire
The truck was a friends and he took it to a dealership. The fix was two new ignition coils, two new spark plugs and a new ecm. I thank all of you for your time and all of the replies. I only had a couple of hours to try to fix it before he sent it off. This...
2000 Honda Accord EX 3.0L door locks VIN: 1HGCG1658Y
Turned out we had multiple door lock actuators failing; as we cycled the locks to assess operation the thermal switch would kick in and shut down operation of the driver's actuator. Customer did not want to replace the other actuators so we adjusted the linkag...
1993 Jeep Grand Cherokee Laredo 4.0L Hard start VIN: 1J4GZ58S4P
I have not heard back from the customer yet. So I dont know if its fixed for sure. I came to the concludion that the PCM was bad. And its still under warranty (another shop installed it 3/4 year ago.) So We sent it back to that shop to get the remaned PCM exch...
2004 Jeep Grand Cherokee Laredo 4.0L head VIN: 1J4GW48S54
straight forward repair unbolted intake left on car reused head bolts used reman head from carquest. thank u for all replies lot of help.
1992 Mercedes-Benz 300SD 3.4L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy VIN: WDBGB34E9N
Thanks much! It was the barrels had come out of place. We indexed them and drifted pins in to retain them. Didn't want to overtighten pressure valves as we did once and jammed rack. Fine now...
1992 Mercedes-Benz 300SE 3.2L Stall VIN: WDBGA32E6N
Thanks to all who replied. The variable cam timing pulley is turned clockwise which we had set correctly. The idle issue turned suddenly into a no start. We traced this to a bad ignition control module $2200 new! Customer opted for a used unit. We replaced the...
2002 Subaru Outback 2.5L Poor Idle Quality, Hesitation
P0172 is air fuel ratio sensor code. Before I posted help, I cleaned throttle body, checked cam timing, replaced fuel filter, plugs etc. Scan to diagnose. then Replaced Air/Fuel Ratio Sensor (front O2 sensor) Runs well now Thanks for all your help in replie... Trouble codes: P0172.
1993 Toyota Camry LE 2.2L r.side axle VIN: 4T1SK12E8P
You guys impressed me with the quick responses! what a great tool to have in the box! A big SHOUT-OUT goes to K. [...] out in Maine though for the correct tip- some juice,a pry bar between the bearing & bracket, with the air hammer on the bracket. Slicker than...
2003 Toyota Camry SE 2.4L Battery VIN: 4T1BE32KX3
Thank you to all who replied. The problem found after a voltage drop on the battery cables was a loose ground at the negative connection at engine.
1993 Volkswagen EuroVan MV 2.5L Excessive Emissions VIN: WV2MD0702P
Well it is sort of fixed. We pulled the breather hose off with the Ho2 disconnected, pre cat and mixture dropped from 3.6% to 2.8%. We changed the oil and filter. I installed a new ignition coil and the mixture initally dropped to 1.3%. As the vehicle ran at i...
2001 Volvo S80 T6 2.8L Cvvt VIN: YV1TS90D21
Ok this one is fixed. Here's what I found out: The camshaft adaptation PIDS should ideally be at 0. Mine were all at 20 which is the limit. On a good engine the camshaft angle for the VVT camshaft should be at 30 with the solenoid unplugged, 15 with the so...
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