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Prev Professional Automotive Repair Technical Discussions for May 2, 2013
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2003 BMW 745Li 4.4L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WBAGN63453
After these repairs the vehicle started to come up with a code 27bb camshaft control outlet vanoso.and the vehicle ran rough started missing in bank 1 all cylinders,hesitation/poor idle. Trouble codes: 27BB
2000 Chevrolet Silverado 1500 4.8L EVAP Leak VIN: 1GCEC14V3Y
This truck has been to several shops and has had everything that could be replaced in the EVAP system. I have done an EVAP system pressure test w/smoke, and a vacuum test. both passed with flying colors. When I do an EVAP service bay test it fails. I have moni...
2004 Chevrolet Silverado 3500 LT 6.6L No Start, Surge, Misfire VIN: 1GCJK33264
Thanks for reading this. I must admit, I am a Powerstroke guy and am limited on Duramax engine systems. This truck was towed in for hard start and low power. A basic scan showed a p0090 code set hard, FRP control, along with glow plug and turbo codes. I am att... Trouble codes: P0045, P0090
2006 Chevrolet HHR LS 2.2L no throttle with engine power reduction VIN: 3GNDA13DX6
brought vehicle in last night after test drive. Complaint vibration at highway speed and brake pulsation when braking with pulling to right side of road. This morning went to start vehicle to do alignment. Engine was running with a dead skip as if misfiring. N...
2006 Chevrolet Malibu LT 2.2L speed sensors VIN: 1G1ZT51F26
Ok guys heres what I know. The car first thing in the morning will shift. Its a little bit harsh but it will shift. When I watch the speed sensor info it shows the output is reading rpm but the input is reading zero. As you drive it the output readings become ...
2006 Chevrolet Impala LT 3.5L Highway steering VIN: 2G1WT58K86
Car was brought in for steering concern on highway. What happens is when you let go of the steering wheel, it begins to weave left to right really slow (stays in your lane the whole time though). Happens randomly. Watched steering wheel while it was doing it a...
2008 Chevrolet Uplander LS 3.9L ps/ac/ps/ac VIN: 1GNDV23158
As soon as the serpentine belt gets wet as in rainy wet roads or in our case wet slushy/snowy roads, the serpentine belt simply stops turning on the crank pulley and needless to say away goes the PS and ALT along with warning lights popping on. We did not see ...
2009 Chrysler Sebring Touring 2.7L coolant leak VIN: 1C3LC55D59
This vehicle has a coolant leak that is about the size of a saucer over night. The leak is only there when the system is under pressure. Coolant accumulates at the back corner of the block where the block meets the transmission. Appears to be the typical expan...
2002 Dodge Caravan SE 3.3L directionals VIN: 1B4GP25372 got a 2002 caravan that has a weird issue. occasionally the turn signals will work opposite , when you put the left one on the right one blinks and vice-versa . this is totally random but i did experience it. tia for any help
2004 Dodge Stratus SXT 2.4L Electronic VIN: 1B3EL36X14
a/c clutch cycles very slowly,kicks on runs for about 30 seconds then shuts down, all pressures look ok even on scan tool.testes e-vap temp sensor was 2.5 volts goes up to 3. when compressor shuts off it take 3-4 min to kick back on. i can command the compress...
1998 Ford Mustang GT 4.6L Cuts out, MIL Lamp on VIN: 1FAFP42X4W
Vehicle came in around 1700-2000 rpm the car jerks, like if it were dying then accelerates fine. Checked codes found P0320 Ign/distributor engine speed signal cir. Backprobed the crank and it was kinda glitchy. Replaced with ford unit. Still same problem. Also... Trouble codes: P0320
2001 Ford F-250 Super Duty Lariat 7.3L Abrupt engine stall VIN: 1FTNW21F12
Hey Fellas: Thanks for taking a look) 02 Ford F-250 7.3 Diesel. Runs fine untill you depress the horn pad or depress the wiper washers) Then the engine abruptly dies, it will restart quickly after it does die. I am cehcking grounds now. Has anyone ever experie...
2002 Ford F-150 XL 4.2L Poor Idle Quality VIN: 1FTRX17292
Good evening, we have a strange one here.When the engine idles the rpms fluctuate from 1,500-to-2,000 rpms-it does this a few times and then idles ok-but only when it comes to an idle-while driving off idle it runs fine-also when the idle fluctuates the radio ...
2005 Ford Taurus SE 3.0L Poor Idle Quality VIN: 1FAFP53U65
Vehicle Came In Not Running Replaced Fuel Pump Now Has Fuel Pressure and Runs. Test Drove And Problem Now Is A Large 300 RPM Surging Idle And It Will Drive For A Period Of Time At 1500 RPM 30 MPH And Then Slowly Decrease To Idle Range TPS Shows Closed Throtlle... Trouble codes: P0505 (Air Bypass Valve), P0300 (Missfire), P0316 (Missfire Cold)
2006 Ford Mustang 4.0L MIL Lamp on VIN: 1ZVHT80N36
Vehicle will sometimes have no reverse.the speedometer will bounce around from 20 to 120 mph.the speedometer will act up with engine not running or running and vehicle not moving.only have to have key on. Trouble codes: P0721 (Output speed senser circuit range malfunction)
2006 Ford Focus ZX4 2.0L 4th gear VIN: 1FAHP34NX6
Just want to make sure it is not an electrical problem. Vehicle had DTC's P1702, B1503& B1499. Have checked rear tail light grounds and also removed reverse lamp fuse and symptom is still there. I think it is internal, but I wanted some input on this before we...
1989 GMC C1500 Sierra 5.0L Poor Idle Quality, Surge, Stall VIN: 1GTDC14H4K
This is a Frankenstien Truck. The owner bought this several years ago thinking he had a potential dream vehical. The motor was replaced with a 5.7 instead of a stock 5.0 For the past several months I have been helping the owner work through problems. The moto...
1999 GMC C3500 Sierra SL 7.4L Poor Idle Quality, Poor Fuel Economy VIN: 1GDKC34J9X
came in with miss and running rough. found a miss fire on #3 installed plugs and wires,still had miss replaced injector.preformed compression test very low on 3 about 90 psi replaced engine test drive did ok cust drove come back skipping on number 5 and 7 we c... Trouble codes: P0141, P1133
1999 GMC Yukon SLT 5.7L No start, no crank VIN: 1GKEK13RXX
Any insight would be appreciated.
1994 Honda Civic EX 1.6L Poor Idle Quality, Surge VIN: 2HGEJ1129R
Vehicle came for rpm flunctuates between 600 to 1000 when sits at idle. I check for vacuum leak, good. Pull IAC valve off and carbon buid up. Replace with a new one and clean throttle. Vehicle still act up the same with rpm flunctuates. Any help would be appre...
2006 Hyundai Sonata GLS 3.3L abs VIN: 5NPEU46F56
Hi all The ABS and the ESC light are constantly on I cannot communicate with the abs modue there is a code in the PCM P0501 vehicle speed sensor A range/performance.I tried a modis and a otc determinator and both will not communicate with the ABS I've checked ...
2002 Jaguar X-Type 3.0L Communication VIN: SAJEB53C02
Vehicle came to us for check engine light and needs to go to emmisions. Found a code for ABS system stored in ecm data so we repaired the right rear sensor ring. Vehicle has a code for p1582. The main issue is that we cannot communicate under obdII but can com... Trouble codes: P1582
2005 Jaguar XJ8 4.2L No Start VIN: SAJWA79C85
Hey guys, I have this weird one. This car wont start, check fuel pressure and its within specs. Only one code in hitory, p1582 flight history recorded? and p0335, for crank sensor circuit problem. Now this is the weird part, I checked injection pulse and there... Trouble codes: P1582
1990 Jeep Cherokee Laredo 4.0L calipers VIN: 1J4FJ58L7L
customer returned a few days later the petal intermittantly doesn't fully return front brakes are draging left front approx 50 deg. hotter than RF pedal is up all the way
2007 Jeep Commander (Truck) Limited 5.7L Lighting VIN: 1J8HG58257
Truck will not turn off when key is turned off until you release the brake pedal, also if truck is already off and you press the brake pedal things start clicking under the hood and the headlights may or may not turn on or off. This Jeep was in 9 days ago bec...
2003 Lincoln LS 3.0L 1-2 Shift VIN: 1LNHM86S53
Need help on this 5r55s trans, it shifts hard from 1st to second and when it shifts into third it is like a double shift but it stays in 3rd. There are no codes, the 3 pressure solenoids all work when actuated by the scanner, I first tried a new solenoid pack ...
2010 Mercedes-Benz Sprinter 2500 3.0L MIL Lamp on, wont rev up VIN: WDZPE7CC4A
we are looking for the air intake sensor does anyone know where it is located thanks in advanve
1993 Toyota Pickup DLX 2.4L doggy/no power VIN: JT4RN13P7P
I am in need of some expert Toyota advice. This 93 toy Pickup came to shop with no power symptom. Test drove and it did seem a little doggy especially in the higher gears. Retrieved codes 31 & 24 diag and replaced VAF sensor. Test drove no difference except co... Trouble codes: 31 (Vaf), 24 (Iat/vaf)
1996 Toyota Camry DX 2.2L MIL Lamp on VIN: 4T1BG12K8T
Shortened version--IATN was down and I lost first version. 1996 Camry--tag team repairs (cust owns tire shop). Po401 code reoccurs fast. We diagnose egr funtional problems everyday-CA smog station. This one sure seems to work. Cust reluctantly installed a new ... Trouble codes: P0401
1999 Toyota Camry LE 2.2L Stall, MIL Lamp on
First and for most let me express my thanks to all that may take time to help and guide me with this head banger! 12-28-13 car comes in with po401(egr insufficient flow) fellow tech diaged egr vacuum modulator as problem and replaced.3-1-13 car returned same c... Trouble codes: P0401
2000 Toyota Camry LE 2.2L Poor Idle Quality, Hesitation, Surge VIN: 4T1BG22K5Y
This car came to us from another shop that could not figure it out. Funny thing was the owner stopped in and talked to me and after I told them how much to do diagnostic on it she took it to this other shop. Sad thing is I cannot figure it out either, yet... ... Trouble codes: P300P, P0105 (MAP/Baro Circuit Fault), P0120 (TPS Circuit Problem), P0133 (O2 Sensor Slow response B1S1), P0440 (EVAP System Fault)
2001 Toyota Sienna LE 3.0L engine VIN: 4T3ZF13C51
Ok guy's this one is a nightmare from the word go. This vehcile came in on a tow truck. It is a 2000 model and the engine is out of a 2001. The customer said they replaced the wiring harness,engine, computer from the 2001 in this vehcile. I have done some inte...
1999 Volkswagen Jetta GL 2.0L speed sensor VIN: 3VWRA81H8X
Hello everyone, I have a 99 jetta here that shifts way late. When I read the vehicle speed in the trans controller group 2 item 4 i get a constant 2.5 volts. The speedometer works normally and from what I can gather this is used to generate the speed signal t...
2000 Volkswagen Beetle GLS 1.8L evap temp VIN: 3VWCD21C1Y
Hi VW Techs, we have a 2000 beetle 1.8 turbo manual trans. That has some strange a/c problem. the system originally had a complaint of system int. blowing cool but not cold. We had vehicle for about a week, started vehicle and ran a/c a number of times with o...
2005 Volkswagen Jetta GLS 2.0L Knocking VIN: 3VWSA69M65
Well I hope everyone is on there A game with this one. I had this car sent to me by another shop for diagnosis. Customer states that after timing belt install, the car now pings on light loads. Car will only ping on a slight grade, 1/4 throttle input, between ...
2003 Volvo S60 2.4T 2.4L Cooling Fan VIN: YV1RS61TX3
Bought this 03 S60 recently and repaired fuel delivery issue. Once driving the vehicle found that A/C was inop. Checked compressor for operation, checked refrigerant, etc. Issue I found was cooling fan would not turn on with A/C. Fan did not seem to work with ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1997 Chevrolet S10 2.2L #4cylinder VIN: 1GCCS1445V
Well, after much debate, the owner decided not to proceed with repair. They decided to drive it as is and live with the light. Thank you all for taking your time and responding to the post.
1998 Chevrolet C1500 Cheyenne 5.0L Poor Idle Quality, MIL Lamp on VIN: 1GCEC14M4W
I finally got it to set properly! Not exactly positive why so many problems. Lined up balancer mark to timing cover and had someone else crank it while i pushed dist. down. All of a sudden it was at 15 deg. I Backed it up a bit and revved it up and it went... Trouble codes: P1345.
2001 Chevrolet Express 2500 5.0L headlamps VIN: 1GCFG25M01
found daytime running module stuck replaced module all good
2003 Chevrolet Trailblazer LT 4.2L MIL Lamp on
Thanks to all of you guys, found two problems, the purge solenoid wasn't allowing any vaccum to the tank and the filter in the vent valve was filthy, replaced the purge solenoid and cleaned the vent valve and so far so good thanks for all the info Trouble codes: P0440.
2006 Chevrolet Malibu LT 2.2L 1-2 shift VIN: 1G1ZT51F26
Guys Im almost out of options. It get positive gear engagement but it doesnt want to shift.. Now the oss is reading intermittedly and when it does that it almost seems like the trans is slipping but then once it starts reading again it bangs back into gear. Im...
2002 Dodge Stratus SE 3.0L MIL Lamp on VIN: 4B3AG42HX2
I've got it figured out guys. I can't believe I always end up in these strange fix situations! Well, here's what happened. To answer a few replies, yes I verified the EGR passages were clear with a handheld vac pump on the EGR valve, made the vehicle stall imm... Trouble codes: P0401 (EGR flow insufficient detected).
2004 Ford F-250 Super Duty Lariat 6.0L Hesitation, Poor Power VIN: 1FTNX21P04
Thanks to all who responded with advice! I went back in after the HPOP one more time, inspecting everything as I went. I got down to the HPOP and removed it to find that the shaft seal behind the gear was never installed in the bore. The sealant coating on ... Trouble codes: P2290.
2005 GMC Sierra 2500 HD SLE 6.6L Seat Heater VIN: 1GTHK23225
Sorry for the later response. Problem was in the seat back heater element. When the resistance was chech at first it showed ok. Hooked meter up positioned it up front. As soon as I sat in the seet the meter showed and open circuit. Thanks for the help guys.
2007 Hummer H3 3.7L Wipers VIN: 5GTDN13E07
Found no park signal coming out of yellow wire of wiper motor, which will cause BCM to shut down wipers except for high speed. Replaced 2 motors with A-1 Cardone and both where bad. Installed new motor and fixed.
2001 Jaguar S-Type 3.0L compressor
Thanks Bob.The trick for putting in an LS let me get some info.Ive got a Solus with European but of course no Jaguar.It had a code for evap temp sensor.Cleared the code and AC started working but the sensor was showing 120 deg.Replaced the sensor and it shows ...
1999 Jeep Grand Cherokee Laredo 4.0L Misfire, MIL Lamp on VIN: 1J4GW58S1X
Most replies were related to TSB`s on valves carboned up and/ or not rotating. Others ranged from synchronizer, fuel being airated, vacuum leak, wiring issue, and my initial concern the flex plate. I ruled out 1 by 1 all possibilities before pulling the head. ... Trouble codes: P0300, P0301, P0306.
1997 Mercedes-Benz E420 4.2L Engine VIN: WDBJF72F7V
Thanks guys. Everyone was in the ballpark on this one. But Larry from Virginia and Joseph from New Jersey "NAILED IT" Pulled valve covers and there was excessive amounts of oil. started car with covers off and the oil was shooting everywhere like a broken vein...
2005 Mercedes-Benz ML350 3.7L MIL Lamp on VIN: 4JGAB57E75
Customer has not returned with the vehicle yet. Go figure. I have checked with AutoLogic regarding reflash availability, no reflash is available for this one. When it does come back I will try soaking the fuel tank with soapy water and pressurizing it, chec... Trouble codes: P2075 (Evap system has a small leak).
2000 Oldsmobile Intrigue GLS 3.5L cooling system VIN: 1G3WX52HSY
Finally nailed this one. The trouble was so intermittent that it was difficult to pin down. Even though we had our suspicions. Turned out to be a leaking head gasket. We had place the exhaust probe in the coolant tank with no indication of leakage. We actually...
2002 Saturn L200 2.2L insp monitors VIN: 1G8JU54F92
thanks for all the help what happened was the fuel guage was not reading correctly and would not complete evap monitor once I repaired fuel gauge cat monitords ran and passed inspection
2005 Volkswagen Touareg 3.2L Suspension Compressor VIN: WVGLG77L15
the venting solenoid was bad so when the computer wanted to check accumulator pressure the vent solenoid should be closed and the computer can measure residual pressure. when the vent solenoid is stuck open the air bags at the wheels do not lose pressure becau...
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