Automotive Technicians Technical Discussion and Fixes for Oct 29, 2005

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	Help Request	Answers
	1994 BMW 540i 4.0L Poor Idle Quality VIN: WBAHE6310R car came in with check engine light on,got code 12 and 13.after check engine light was reseted and plugs were change we monitor o2 sensors and they do very well , no problem found with o2 sensors.plugs were changed due to age and they were worn out.we have rou... Trouble codes: 12 (o2 sensor out of range bank 1), 13 (o2 sensor out of range bank 2)	View
	1995 Buick Riviera 3.8L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1G4GD2212S hello there again.this riv. is kicking my butt.some problems i think are from the cust. used parts but here we go.car doesn't have the power it should and at an idle at stops it lopes like a car with a cam.scan data says 171 lean and 134 i think but that is ca... Trouble codes: 171 (lean)	View
	1985 Chevrolet Corvette 5.7L Stall VIN: 1G1YY0783F fuel pump pressure & volume test great, fuel filter is clean - spray throttle body cleaner in pcv hose, engine runs - tested injector circuit, power to both sides but do not pulse - engine grounds are good as well as all power circuits to ecm - circuit 430 to ...	View
	1993 Chevrolet K1500 Cheyenne 5.7L all shifts VIN: 2GCEK19K6P Hello fellow techs; This truck has a wierd transmission shifting problem; it shifts way too soon. When the truck first came in we scanned for engine/trans codes and found none. Test drove for roughly 5 miles under all driving conditions and it shifted normally...	View
	1998 Chevrolet Tracker 1.6L MIL Lamp on VIN: 2CNBE1862W This car is the first time to come into my shop.The check engine light on,we got the code p0400. Then we replaced egr back pressure sensor.egr bypass valve.egr solenoid vacuum valve. After that we cleaned the trouble code. After 3 weeks the customer came back ... Trouble codes: P0400	View
	2001 Chevrolet Tahoe 5.3L Drive-axles VIN: 1GNEK13T61 Got a slight buzz/whine noise that occurs once at 15-20 mph. Noise seems to come from brake booster/firewall area. Will only do it once following start up, but if you stop and restart the vehicle it will again make the noise as soon as you hit the 15-20 mph th...	View
	2005 Chevrolet Cavalier LS 2.2L torque pull VIN: 1G1JF14F75 Vehicle was in minor collision in front. Replaced upper tie bar rt headlamp, frt cover etc... no structural or suspension damage. A 4 wheel alignment was performed - Lt camber: -1/8, Rt camber: +1/8, Rt caster: +3 1/2, Rt caster: +4 Toe: 1/32``. Rear: camber b...	View
	1995 Ford F-250 Special 7.3L No Start VIN: 1FR05TY3W6 truck wont start unless u spray either in it glow plugs failed ohm test relay was melted replaced them still same problem	View
	1995 Ford Escort LX 1.9L engine temp VIN: 1FALP15J5S will not keep passenger compartment warm, temp gauge is running cold (in cool weather) replaced thermostat three times with aftermarket thermostat. head was cracked ..replaced and heater core was leaking...replaced, now having problem with engine heating up to...	View
	1996 Ford Probe GT 2.5L Cuts out, Misfire VIN: 1ZVLT22B7T Help Ford/Mazda gurus. This car came to me for no accelleration under load. Confirmed problem with road test. Ran good till about a mile into the drive. Then has no power and will cut right out over @1/3rd throttle. No codes, no check engine light. Pulled plug...	View
	2000 Ford Windstar LX 3.8L fans VIN: 2FMDA5147Y this windstar is driving me crazy. rad. fans are always on, both speeds. checked drivers at pcm and they are always activated (grounded) in any temperature condition. new wires from pcm to fan relays have been installed. i have a dtc po1462 acp sensor low volt...	View
	1988 GMC C1500 Sierra 5.7L Cuts out VIN: 1GCDC14K3J Hi guys I have a nightmare on what is usually a very simple trouble free system. Customer brought truck in claiming it cut out at times. He had had new fuel pump, fuel filter, wires, plugs, cap, and rotor installed, Scoped truck and found ignition pattern was ...	View
	1993 Honda Accord DX 2.2L Stall VIN: 1HGCB7646P customer complains of vehicle just dying while driving then starts back up sometimes right away sometimes after a few minutes we have drove vehicle alot and never has died we pulled a code 15 ignition output signal i have been told the distributer has problem ... Trouble codes: 15 (problem in ignition output circuit)	View
	1994 Jeep Grand Cherokee Limited 5.2L Anti Theft System VIN: 1J4GZ78Y7R Jeep came in for a start/stall problem. Identified problem as PCM shutting down fuel injectors and showing "Fuel Allowed - No" on scan tool. Cust. states that security light was on all the time for about a week and a half before having it towed here for the st...	View
	2000 Jeep Grand Cherokee Limited 4.7L Poor Idle Quality, Surge, Cuts out VIN: 1J4GW68N8Y HELLO TEAM ! I want to check my guess. When you set this one in D, rpm will sudently drop, electronic system tries to recover reving engine to 1000 rpm, but after a few more rpm drops, engine dies, it will start inmediately, Actual desires rpm are 640, custome...	View
	1992 Mercedes-Benz 500SEL 5.0L Ride control VIN: WDBGA51EXN The veichle came in for a leaking power steering pump. Rebuild tandem pump, bleed system to oem specs. Customer drove veichle, since then system got rock hard. Bleed system 20 times and now suspension is soft, it will not stiffin. Has anyone had this problem o...	View
	2003 Mercury Sable GS 3.0L Stall VIN: 1MEFM50U23 Greetings, Very good customer, came in about 2 weeks ago with complaint that one time in stop and go traffic (no faster than 10 mph) the ABS light came on for a few seconds and then went out. No codes, couldn't re-create any symptom. Now he says that on at lea...	View
	1986 Nissan 200SX XE 2.0L Hesitation, Cuts out VIN: JN1PS24S7G Can someone throw this old dog a bone? Car starts good hot or cold, idles good hot or cold, but will cut out under moderate load only when cold & not up to running temperature. Brake tourque the car cold will cut out as well. Once this car is fully warmed up t...	View
	1991 Nissan NX SE 2.0L heater VIN: JN1GB36C6M o.k guys, this nx heat inop, blower motor does not work when using car dashboard switch, disconnected blower motor & applied direct battery voltage,motor spins or works fine.checked voltage with drop light at resistor connector & found none,,need info on this,...	View
	1987 Toyota Pickup 2.4L poor pedal VIN: JT4RN63R2H truck came in with a broken rear line and an empty master cylinder - replaced both rear lines - replaced master cylinder - replaced siezed front calipers - replaced leaking wheel cylinders - replaced one front line between caliper and hose - bled all 4 wheels ...	View
	2005 Toyota Corolla CE 1.8L No Start VIN: 1NXBR32EX5 The veh starts and after 3 sec dies, already checked security system is OK (security indicator stays off when ign on), I have checked fuel pressure is ok, but I have spark and injector pulse for a short time while cranking. I also tried resetting the Inmobilze... Trouble codes: P2118	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	1997 Acura CL 2.2L Hesitation, Misfire, MIL Lamp on VIN: 19UYA1152V sorry for the delayed , the acura was scheduled to come in last monday 10/24/05 but hurricane Wilma was a direct hit on our area. After Hurricanes Frances and Jeanne hit last year and did Major damage to the shop that we are still recovering from I am happy to... Trouble codes: P0304.	15
	1996 BMW 328i 2.8L runs rich VIN: 4USCD2325T Hello everyone and thanks for the help on this one. I missed the boat on this one. This vehicle was belching out so much smoke and i just made an initial assumption it was fuel. It looked black to me. This one ended up being a major oil burner due to a defecti...	8
	1997 BMW Z3 Roadster 2.8L Door Locks VIN: 4USCJ3320V We had one response to our request and they were overly friendly and helpful. He offered me a phone number and we spoke about the condition and came up with a good diagnostic path to take. We replaced the drivers actuator and latch. We tested the wiring from t...	1
	1999 BMW 528i 2.8L Limp Home VIN: WBADM6346X The IATN is the best tool in the shed, I always tell my crew. Thanks for all of the replies, I forget all of the names to thank and the phone call from one member from back east that first said to check the CAN line on the right side in the car first, it was O... Trouble codes: 217 (Signal CAN EGS Currently not present-Sporadic), 130 (Signal CAN ASC 1-time out reached currently not present), K0M, 6 (Data connection to drive running-gear control modules can bus), 11 (EGS signal disturbed or transmission limp-home program).	9
	1988 Chevrolet C1500 Cheyenne 5.0L Mechanical VIN: 1GCDC14H2J Thanks everyone, had many replies most with different ideas which is helpful. After checking everything 3 times. Took plug off rear of abs dump valve checked for fluid presence none found.Talked to customer, advised of condition and would have to eliminate dum...	28
	1999 Chrysler Concorde LXi 3.2L Stall VIN: 2C3HD46J9X After checking it out and reference to emails received we replaced the crank sensor+harness, we haven't had any further problem, the car has made one trip of about 320 miles, Thanks for the help:	8
	1995 Ford Mustang 3.8L Constant High Idle VIN: 1FALP4044S Found the culprit. It was the IAC that the customer relaced from Autozone. It was the wrong one listed for the car and it was bypassing air between the gasket mating surface. Replaced with OEM IAC and problem is fixed. I didn't suspect it because it was a new ...	18
	1995 Ford F Super Duty XL 7.5L tcc VIN: 3FCMF53G8S Could not heal this one... Apparently these transmissions are supposed to lock up after 2nd gear shift. My problem was that it never unlocked until it downshifted again into 1st. Some replies mentioned about a new PCM update, I could not find any solid informa...	8
	1996 Ford Escort LX 1.9L MIL Lamp on VIN: 3FASP11J9T I took the timing belt cover off and there it was 1 tooth was off.Now the car is running great and no more check engine light.Thanks to everyone.Thomas Trouble codes: P0340.	6
	1997 Ford Ranger XL 2.3L Misfire well i guess cannot trust someone elses work or skill level 1st tech missed wrong plug app.cust supplyed wrong plugs even tho locale parts store claims they are right my self and other tech just assumed every thing ok from 1st techs.work orded factory rec plug... Trouble codes: P0301.	18
	1998 Ford F-150 Lariat 4.6L Misfire, MIL Lamp on VIN: 1FTZX18W4W Thanks to everyone that replied.Sorry it took so long customer brought it back yesterday and it ended up being a bad injector.It checked out good with all of my test's but i put a new on in and it runs great.I have never had a intermitent injector but now i ha... Trouble codes: P0303.	12
	2003 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53U53 Thank to eveyone who responded installed new pump and it cured the problem I found out they like to run it till the low fuel lite comes on, I dont know if this can cause the pump to fail. thanks again Tadd Trouble codes: P0191.	9
	2001 Honda CR-V LX 2.0L Surge, MIL Lamp on VIN: JHLRD28471 Well, it came back in when the customer had more time. I was putting the NGK's in and figured that I would do a compression test while they were out. Highest was 190 psi. Lowest was 85 psi, and on cyl #4. I am sure that this is the problem and thank you all on... Trouble codes: P0420 (Catalist deterioration), P0403.	24
	1987 Jaguar Vanden Plas 4.2L Excessive Emissions VIN: SAJAY134XH Hello everyone and thanks for the help on this one. I received numerous replies. Most regarding the oxy sensor. Mine worked fine. This vehicle has two cats in the pipe. I replaced the forward convertor and it passed easily. Thanks, Ron	9
	1999 Jaguar Vanden Plas 4.0L fail safe mode VIN: SAJKX6045X The owner purchased this car in Texas a year ago. It had same problem then. At Jaguar dealer in Texas they did some repairs (uspecified) to unlock shifter and erased trouble codes. Car was transported to California. It had same problem during unloading from th...	5
	1990 Jeep Cherokee Laredo 4.0L No Start VIN: 1J4FJ58L7L I am sorry I did not give very good info, my Dad passed away a few weeks ago & I have been in a fog these days! This Jeep spun over great & would start up & then go dead, it would lose spark & injector pulse & fuel pump. Many said bad ignition switch, I had al...	17
	2003 Kia Sorento EX 3.5L engine VIN: KNDJC73303 Well it turns out that we have authorization to replace the engine so a tear down is unlikely. If a teardown does occur I will certainly post the findings. I was given varied advise and theory's including plugged oil passages, a washer that breaks off the inta...	10
	2002 Mazda 626 LX 2.0L reverse VIN: 1YVGF22C62 Thanks for all take times to help me.we decided to pull trans,disassemble it ,we found reverse drum has a crack. thanks again	3
	1977 Mercedes-Benz 300D 3.0L Hesitation, NO power VIN: 1231301203 Thanks for the phenominal number of responses! The vast majority of the suggestions had already been ruled out. After reading one of the responses that suggested that the fuel feed and return line banjo bolts might have been switched, I was sure we had found t...	28
	2000 Mercedes-Benz S500 Guard 5.0L gear shifter VIN: WDBNG75J9Y Customer had car towed to dealer yesterday before I could find the problem.	2
	2000 Mercedes-Benz CLK430 4.3L Convertible top VIN: WDBLK70G57 Well the fix for this one is in. We found that the top wasnt working because the luggage cover had been jarred out of track and wasnt activating the switch. That got the top functioning again (quick flashes were observed on switch and that indicates trunk or l...	1
	1991 Nissan Pathfinder SE 3.0L Poor Idle Quality, Surge VIN: JN8HD17Y0M First, I would like to thank everyone for all their help. I did replace the timing belt and that didn't help. I had replaced the Crank Angle Sensor and that didn't help. Out of frustration I replaced the whole dist. Problem gone. I think I may have gotten a de... Trouble codes: 11 (Crank Angle Sensor), 21 (No 1 or 120 degree found).	7
	1994 Nissan Maxima GXE 3.0L torque converter VIN: JN1HJ01FXR I had three replys that were good info, but haven't fixed my problem. One suggested that I check out the TPS. I did that via scan tool, and pin test at trans computer. ALLDATA now has updated thier info and includes pin values. Another said that he had an exac...	4
	1997 Nissan Altima SE 2.4L Surge VIN: 1N4BV31D4V fixed it. got a lesson in good old fasion listen to the complaint. idle was at spec but customer was complaing that the vehicle was hard to stop and was pulling forward at a light. when i finally got my head out from under the hood i remembered that brakes are...	2
	1997 Oldsmobile Aurora 4.0L Misfire VIN: 1G3GR62C0V First, Thanks to all that replied to this post. I am not able to say what fixed this problem as customer is not willing to do so. I'm sure we have all heard this one 'I'm going to sell this piece of *@#)' no wonder I will never buy a used car. I failed to meti... Trouble codes: P0300.	14
	2000 Pontiac Grand Prix GT 3.8L TCS light on steady VIN: 1G2WP52KXY As a couple of people pointed out, there are 2 data lines. UART and Class 2. Tech2 was able to communicate with both the PCM and EBCM, so I ASSumed that the UART data line was not broken between EBCM and PCM. BUT the scan tool was talking to ABS on UART and PC...	6
	2001 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NF52T61 Thanks for all your help guys, i found i was losing power to the ignition module and traced it back to a bad ignition switch. Car has started perfectly every time since i replaced the switch and my customer is happy.	11
	1999 Saturn SC2 1.9L MIL Lamp on VIN: 1G8ZY1278X The problem ended up being the signal ground for the O2 and the heater ground (to pcm) were in the wrong place in the connector. The wires were the same in the original O2 sensor as were in the replacement. My only explanation is that the two wires went out,... Trouble codes: P0141 (HO2S Heater Control circuit sensor 2).	2
	2000 Volkswagen Cabrio GL 2.0L instument cluster VIN: 3VWDC21VOY hi, sorry this took so long, i'm a one man shop and the customer took a while to come back in. anyways, i used a connector pin identification figure from a local speedo repair shop (dick's speed-o-tach). with it i was able to identify the power supplies and ...	6
	1993 Volvo 850 GLT 2.4L No Start VIN: YV1LS5504P I wish to thank all of you,for your time and experience you have shared with me on this Volvo. Luke from New Hampshire, Paul from Virgina,Mark from Texas,Alex from California,Ronald from Australia,John from Great Britan,Frank from Jersey. I removed all grounds... Trouble codes: 314.	9

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