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Prev Professional Automotive Repair Technical Discussions for August 18, 2014
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Open Help Requests for All Makes and Models
Help Request Answers
2008 Acura RDX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 5J8TB18568
thanks to all who can help, i was driving my sisters car up to n.y. city this weekend and about halfway( 2 hours) where the car started to ping really bad and misfire. when i pulled over the car idled perfect. so i kept driving i found that then i would go up ... Trouble codes: P0556, P15BA, P0302
2003 Audi A6 Quattro Avant 3.0L Fans VIN: WAUVT54BX3
Vehicle came into shop overheating. Another tech diagnosed inop fans as fan controller faulty. After confusion of identification of controller we received the right OE valeo unit. Installed/ spliced in unit and fans now run continuously as soon as the main fou...
2008 Audi S6 5.2L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WAUDN74F78
Need help with cold start rough running hesitation for few minutes and MIL on ? strange code P1081-004 and 004225 Mixture lean exceed which stated PCM control unit 2 AT BANK-3? Thanks. DID SMOKE TEST NO LEAKS FOUND, CHECK COILS AND SPARK PLUGS ALL FINE WITHIN ... Trouble codes: P1081 (004- Lean limit exceed), 00422
2003 BMW 745Li 4.4L No Start, Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: WBAGN63473
this car was towed in no throttle response when he parked it 30 days ago now it wont stay running. listed all these codes 2796 - 2799 - 27F6 - 27F7 - 27F8 - 278B - 278D - 271A - 2722 - 2783 - 5F26 - 5EE4 - 9C76 - 9C94 - 9C64 - 27E7 - 27FE - 27E8 - 27FF - 2821 ... Trouble codes: 2796 (throttle act - test low stop), 2799 (throttle - valve), 27F6, 27F7, 27F8, 278B
2009 Buick Enclave CXL 3.6L Misfire VIN: 5GAER23D19
We have watched the pulse width on the scanner for all 6 cylinders and have very little difference in them. The "fly swatter" coil on plug tester shows all 6 cylinders firing. The misfire stops counting as soon as you touch the throttle. We tried propane enric... Trouble codes: P0302
1998 Chevrolet Cavalier 2.2L abs/srs VIN: 3G1JC5249W
No communication with abs module or air bag module. Abs and red brake light on. unplugged instrument cluster, then able to communicate with abs and airbag module. Replaced cluster and established communication with both modules. Shortly after no communication ...
2008 Chevrolet Silverado 1500 WT 5.3L oil pressure VIN: 3GCEK13358
This engine starts with 60psi and drops to 5 after running down the road 1 mile.Turn off engine restart and oil pressure is at 40 psi and will drop again in a minute or two of driving.Setting still it takes a few more minutes and the oil pressure will drop to ...
2012 Chevrolet Express 3500 LT 6.0L Curtain Air Bags VIN: 1GAZG1FGXC
Vehicle is driven at high altitude 30 degree area on a dirt road daily. We suspect wiring, however don't believe a short to ground would deploy bags. Should we replace harness, would that explain the erratic performance (B0090) from the roll over sensor and th...
1993 Dodge W150 5.9L Engine VIN: 1B7HM16Z2P
Originally came in with complaint of misfiring in intake and lack of power. Customer states it drove fine one day and not the next. Removed dist cap to find electrode worn off and tab on center of rotor broken/bent. Did a tune-up (plugs, wires, cap, rotor fu...
1999 Dodge Durango SLT 5.9L 1-2 upshift and passing gear VIN: 1B4HS28Z7X
Thanks in advanced! Durango was purchased by me, while normal driving vehicle seemed to shift normal, under WOT would not shift out of 1st gear with out slight depression of throttle. We adjust the kick down cable to no avail. Not being a tranny guy at all I d...
2007 Dodge Ram 3500 ST 6.7L No Start, Stall, MIL Lamp on VIN: 3D6WG46A77
Customer was driving and vehicle just died. Will not crank. No transmission range selector on the dash. Can not communicate with the ecm. Chasing diagrams really leads me no where for the answer I am looking for . I want to confirm engine controller is defecti... Trouble codes: U00
2007 Dodge Ram 3500 ST 6.7L MIL Lamp on VIN: 3D7MX48A37
EGR Cooler Bypass Control Circuit/Open code stored but returns on a short test drive after being cleared. Also has P242F and p1451 codes for restricted DPF that cannot be cleared. Will not run a stationary desoot. Alldata shows that the bypass valve is used to... Trouble codes: P245A
2009 Dodge Grand Caravan C/V 3.3L abs VIN: 1D4HN11E69
hi guys i have this problem with abs and esp code c123b esp system control too long and a steering angle code road test the car check all speed sensor the look ok on scann tool data any help when we drive the car traction kinck in any help
1996 Ford F-250 XL 7.3L Misfire VIN: 1FTHX25FXT
This truck has a misfire @ 1800-2000 rpm and up. Acts just like a gas engine with bad plug wire. Seems to be a couple cylinders. The IDM & injectors, wiring & v/c gaskets have been replaced. The customer says it started when fuel heater shorted & blew fuse. He...
2000 Ford F-250 Super Duty Lariat 7.3L Clutch VIN: 1FTNX21F1Y
Customer drove vehicle in with the slave cylinder removed. They removed the slave because it was hard to engage into any gear. Remove old slave and installed a new one with no luck, prior to installing slave looked as best as possible inside bell housing of an...
2000 Ford Focus ZX3 2.0L wheel bearing VIN: 3FAFP3135Y
Have heard about a lot of issues with the aftermarket wheel bearings for the Focus so I went ahead and ordered the OEM part. After pressing in the bearing and hub I find this has more play than the bearing I took out with 125K on it! And this is just moving t...
2003 Ford Crown Victoria 4.6L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2FAFP71W53
First off its a old taxi it has many more codes c1897 steering variableassist power steering ii (vaps)circuit fault u1026 scp data fault engine rpm b2293 restraint fault b2295 drivers side air bag fault all this started with a water pump replacenent i cleared ...
2004 Ford Escape XLS 3.0L Misfire VIN: 1FMYU92114
Hello, This 2004 Ford Escape came in on the hook. Crank - No start. We replaced all the coils and spark plugs and it started right up. BUT it has a misfire in Cyl 1 & 2 . Both Banks front cylinders. Has good compression. Swapped coils and injectors and still ...
2004 Ford F-150 FX4 5.4L timing VIN: 1FTPX14524
Codes that were present before that include POO12, POO22, PO171, PO300, PO305, PO306, PO307, PO308, PO340, PO345, and PO356, that was before, now it idles rough once warmed up and it throws POO22, most of the time or PO171. I have pretty much rebuilt the front...
2006 Ford F-250 Super Duty XLT 6.0L No Start VIN: 1FTSW21P76
I Have fixed many 6.0s but this one has me stumped. truck will start cold and run all day. BUT if you tow or get it real hot just foot to the floor driving it will not restart hot. first thing I done was pressure check high pressure oil system. I replaced inje... Trouble codes: P2290 (Icp too low)
2006 Ford F-350 Super Duty XLT 6.0L No Start VIN: 1FTWW31PX6
Hi, and sorry in advance for the long post, but this truck has a long history. We bought this truck over a year ago from auction and it has had these same symptoms since purchase: Hard start after more than 15 minutes of running. Cranks for exactly 25 seconds ...
2007 GMC Sierra 1500 Classic SL 4.8L Misfire, MIL Lamp on VIN: 3GTEK14V67
Hello All this one has been awful. The vehicle came in on the hook customer said it was running a little hot , oil light came on and he didn't think there was an issue. He kept driving it, check engine light started flashing a few minutes later of driving the ... Trouble codes: P0300
2006 Infiniti G35 3.5L No Start VIN: JNKCV51EX6
This veh. came from body shop. Had had short in console harness and had inside harness replaced. Cust returned after complaining about hard to start intermitantly. cold veh starts right up but after running can turn off & veh will crank but not start, can turn...
1989 Jaguar XJ6 3.6L Mechanical VIN: SAJHY1548K
Jaguar Tech, please help on this bad boy here. Car tow in with a hard brake pedal, check power & ground signal [...] accumulator charge & pressure switches- OK. Replace switches per TSB, system still inop, found really weak pressure from hydraulic pump at right s...
1998 Jeep Wrangler Sport 4.0L Instrument cluster VIN: 1J4FY19S5W
This Wrangler has me pulling my hair out. Background, cosutmer stated dash would intermetinly lose tack and some gauages. He would bang on the dash would come back on for a while. Then it took a few bangs over a couple month period. Today not operative at al...
2006 Lexus GS300 3.0L Hesitation, Surge, early shift VIN: JTHBH96S96
Customer complaining of engine idling to slow when warm. We could not duplicate problem. What we are noticing is the transmission is shifting early. It shifts into 2nd gear at 3mph then 3rd and so on and all finished at 15mph. Scanned for data and checked VSS ...
2012 Lincoln MKX 3.7L climate controled seat VIN: 2LMDJ8JKXC
Passager seat got wet dual climate controled seat module was replace along with seat harness , module was programmed with build as settings, i can make both seat motors run with the scanner but not with touch screen,I have no communications with heated steerin...
2005 Mazda 3 S 2.3L Misfire, MIL Lamp on, Pings VIN: JM1BK32355
This car came in pinging badly on accel and misfiring on cruise. EGR valve is new and ports are clear. Cam timing was off so we corrected that. Still pinging. Pulled intake and checked /replaced pcv and hose. No change. Checked crank sensor adjustment and scop... Trouble codes: P0300 (testing and results)
1995 Mitsubishi Montero LS 3.0L ignition VIN: JA4MR41H2S
The car came in via a tow because it wouldn't start, although it would crank strongly. Tested for spark and there was none. Because the car was near a timing belt sevice, I did the belt and replaced the CPS at the sane time as the labor was the same to do the ...
2000 Nissan Frontier SE 3.3L MIL Lamp on VIN: 1N6ED27T9Y
Hi guys, this is a nice truck to work with, it came with all this codes and the check engine light on (P0151, P0131, P0134,P0145 and P1168), after a short diagnosis we notice that indeed, the front 02 sensors just stay at .6 volts once the vehicle is hot it do... Trouble codes: P0131 (sensor circuit low bank 1 sensor 1), P0134 (sensor circuit no activity bank 1 sensor 1), P0154 (02 sensor circuit no activity bank 2 sensor 1), P0151 (02 sensor circuit low volts bank 2 sensor 1)
2001 Pontiac Aztek 3.4L MIL Lamp on VIN: 3G7DA03E01
Vehicle came in with P0420 stored. Freeze frame indicating code set at idle. Scan data shows rear o2 mimicking front o2 at idle. Engine at 2500RPM shows rear O2 oscillating between 60mv-150mv(fairly steady). My concern is the LTFT I am seeing is as high as -30... Trouble codes: P0420
2007 Toyota Tundra SR5 4.7L No Start VIN: 5TFRT54107
Truck in for CEL and extended cranking at times. Performed scan diagnostics found p0300,p0302,p0303. Plugs were replaced and coils on 2&3, still have condition, sometimes the Service Engine Soon light will flash, sometimes there will be no codes and sometimes ... Trouble codes: P0300, P0302, P0303

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1990 Alfa Romeo Spider Veloce 2.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: ZARBA12T6L
I am going on vacation and have run out of time for this car. I think it is in limp home mode. I could turn the flap on the air flow meter and it wouldn't change the CO. I did put a 200 ohm resistor in the temp sensor plug with no change. I recommended that th... Trouble codes: 1223 (O2 sensor readings go to max or min164 factory manual), 1265 (Not in factory manual).
1994 Chevrolet Corvette 5.7L No Start VIN: 1G1YY22P4R
The shop I am checking this vehicle for is in the process of moving to a new building so I don't think they will have the time to finish this 'vette' before I have to close this post. Besides the fact it was driven into the shop and is now a no start,. it has...
2008 Chevrolet HHR SS 2.0L Poor Idle Quality, Surge, MIL Lamp on VIN: 3GNCA63X98
Thank You Techs!! Yes this is the poster child job! We agree on replacing the engine but customer has to many medical bills to afford it. Jimmy from Georgia & Mike from Virginia and I agree engine must have proper oil pressure & flow. Rattle of timing tension... Trouble codes: P0016 (Ckp to cmp correlation problem), P0089 (Fuel pressure regulator performance).
2003 Chrysler Town & Country EX 3.8L Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 2C4GP74L73
we replaced the harness to the injectors & repaired the problem thanks everyone for your help hope this helps anyone out there
2005 Ford Taurus SE 3.0L Hi Pressure line VIN: 1FAHP53285
Thanks for all the suggestions. Looks like no easy fix. As most suggestions recommended penetration oil & heat (light) plus twisting is about the only method to remove pipe. That's what I'll have my tech try.
2003 Honda Odyssey EX 3.5L MIL Lamp on VIN: 5FNRL180X3
The customer took the vehicle and said she would return however no sign of her yet and I need to close this post I will add to it if she returns Trouble codes: P1399, P0301.
2003 Honda Civic LX 1.7L Pcm VIN: 1HGEM22593
yes the car is fxed and out the door thank to everybody especially to john from florida and cheolwon from onterio and the others but it was the pcm. a used one was replaced but it needed to be programmed which was done at the dealer however there was some othe...
2007 Honda CR-V EX 2.4L 2nd gear VIN: JHLRE48547
Customer has not returned, I did call her, and informed her that it was most likely internal, and she decided to wait for it to get worse, because she can't afford a transmission.
2005 Land Rover LR3 SE 4.4L Starter VIN: SALAD25475
Thanks for all the help involving testing the CAN circuitry. I hae yet to find the problem as we have tried another ABS module and another Climate Control Module. All of the system resistance is proper and the car is still down. We are still chipping away at t...
2006 Mazda 6 Mazdaspeed 2.3L MIL Lamp on VIN: JM1GG12L46
Well, I would like to say we fixed the car by our brilliant diagnostic procedures, but it was by chance! We got in to start the vehicle and it was completely dead. Found the positive battery terminal was cracked and not providing sufficient clamping force. Rep... Trouble codes: P0300 (Random Misfire), P0401 (EGR Insufficient Flow Pending Only).
2003 Mercedes-Benz E320 3.2L compressor VIN: WDBUF65J73
I want to thank all 5 of you for your help and schooling on Mercedes AC systems. Unfortunately the owners decided not to fix the AC at this time,(summer almost over). Testing the system for the leak was a real chore. but one of you mentioned that evaporato...
2004 Mitsubishi Galant ES 2.4L starter VIN: 4A3AB36F94
Well, this is taking forever. All dealers I call say you have to buy t/c. I found a place that sells reman torque converters (t/c's) and they say it comes with ring gear, this is an aftermarket t/c at his risk. He can't make up his mind, may sell vehicle. I wi...
2002 Saab 9-3 SE 2.0L Misfire, MIL Lamp on VIN: YS3DF78K02
replaced ignition cassette today with an OE unit, can take 2-3 weeks for light to come on so closing help request till I can give it some time to see if it is indeed repaired. Thanks to all who replied, general consensus is the DI unit so we will see. Trouble codes: P0300 (random cylinder misfire), P0303 (cylinder 3 misfire).
2005 Toyota Corolla CE 1.8L Poor Idle Quality, MIL Lamp on VIN: 2T1BR32E15
hi thank you for your help it is very appreciated! finally the problem was the ecu I order a used one but i couldnt reprogram the immobilizer in the ecu with the snap on verus scan tool so i had to send the car to Toyota to get it reprogram .Before i replaced... Trouble codes: P2103.
2008 Toyota Camry Hybrid 2.4L Unknown VIN: 4T1BB46K28
hi guys we fix this toyota camry e problem was the a/c evap box and the evaporator core we replace car no more water thank you guys again
1977 Volkswagen Beetle 1.6L Excessive Emissions VIN: 1172034804
Hello Friends Thank you all for all the great replies,to this 1977 bug. It is fixed I got many replies and very good advice, to start with I checked and re-adjusted the throttle which was way off The throttle opened to much and the adjustment was way off, al...
2006 Volkswagen Jetta TDI 1.9L engine VIN: 3VWRT71K66
rmeoved transmission for inspection,determined that the dual mass flywheel had come apart causing engine to stop turning and also causing some damage to transmission bell housing just waiting on parts to be able to re asssemble.thanks for all the help
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