Prev iATN Members TechHelp for October 27, 2007
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Help Request Answers
1987 Acura Integra 1.6L Excessive Emissions
Hello Techs, I have an Integra thats driving me nuts, I know it has a lot of miles on it, the motor has been rebuilt a few times and the block has been machined along with the head, my compression is 190 all the way across and the vehicle has passed smog check...		 View
1999 BMW 328i 2.8L compressor
Hey guys, need what to do next. 1999 BMW 328i with bad a/c. Car came in with no cold air. There is no 134a charge. Compressor is working and compressor clutch is engageing. System was checked to see it would hold vacuum, 20 inches held fine. Tried to recharge ...		 View
2003 BMW 745Li 4.4L Gateway
Hello BMW Techs, we've got a Techs dream here, a 745 Li towed in from a body shop that is limp home (it runs). We did find that the body shop just threw the battery in the back of the vehicle and left the cables loose and arcing. We tighten the cables, hooked ...		 View
2003 BMW X5 4.6L temperature gauge
Hi guy's , Does anybody know where the temp sensor for the gauge is on a BMW X5 4.6l We Changed the water pump and now the gauge reads full hot all the time. Even before running the engine. Alldata has very limited info on this vehicle and I am by no means a B...		 View
1999 Cadillac DeVille 4.6L Accessories
hi techs,need help on this caddy.vehicle starts runs fine all the time,but on the message display it reads;theft problem-vehicle may not start. i checked pcm,body codes,found none.have snapon scanner hooled up,ignition 0 and ignition 1 voltage reads 12 volts.c...		 View
1999 Cadillac DeVille 4.6L abs/traction
The abs/traction control on this vehicle has kicked in while the vehicle is at a full stop. The pedal started vibrating and the vehicle moved forward. The abs and traction control lights came on, as well as the message center reading "service stability program...		 View
2002 Chevrolet C3500 HD 8.1L No Start
IATN land, I need help. One of my technicians replaced a crankshaft on this vehicle. We had to transfer the crankshaft rings due to the crank being aftermarket. When the job was completed they ran the vehicle with no problems for more than an hour. Once determ... Trouble codes: p0335 (CKP Circuit a fault).		 View
2003 Chevrolet Express 4.3L i/m status
Good evening everyone, I have a van that came to me that failed inspection due to 0300 code replaced injectors and reg. Runs good now and no codes. My problem now is on my I/m status will not switch to yes on evap. Ran van for 2 days still nothing tried to for...		 View
1987 Chrysler Fifth Avenue 5.2L Hesitation, Misfire
This car is my neighbors car this problem has been going on for a while now when under load it starts missing real bad I hold the brake and give gas and you can feel the miss. rather than keep throwing parts at it with the same outcome maybe someone out there ...		 View
2001 Chrysler PT Cruiser 2.4L starting
help needed: crank will crank but no start, no codes, no ground to injector or ignition control module, i replaced ecu with a good know computer and gives me a code that says wrong key input, i think is because the computer has not been reprogram with the new ...		 View
1995 Dodge Dakota 3.9L Excessive Emissions
Please help me with this vehical it belongs my Dad and it won"t pass inspection.The nox are to high.At high rpm it reads 1310 to pass it needs to be 956 at low rpm it reads 2169 and it needs to be 1046. I checked the egr valve with a vacum pump and it works ho...		 View
1996 Dodge Pickup 5.9L Cuts out
problem comes and goes just no power woun't go twenty mph I can not find a cts any where master tech reads five volts for the cts any one know where I might find the cts mitchel on demand is no help Thanks for the help in advance		 View
1998 Dodge Pickup 3.9L Poor Idle Quality
vehicle came in with a very rough idle and advise from research i performed a intake gasket replacement.and it's not as rough but still doesnt have a smooth idle,any help is appreciated.		 View
2004 Dodge Stratus 2.4L MIL Lamp on
Check engine light, won't pass inspection. MIL code P0491 Secondary Air Intake System. Recieved detailed diagnosis from Chrysler and everything seems to test OK. Chrysler techs not real familiar with system. Suggested changing relay which did and cleared codes... Trouble codes: P0491 (Secondary Air Intake System).		 View
1990 Ford Probe 3.0L alternator
Vehicle came in with engine locked up.We replaced the motor and two weeks later customer returned with low voltage reading on dash.battery voltage with vehicle running was 11.5 volts.Checked all fuses and varified power to alternator.Replaced alternator.Batter...		 View
1997 Ford Econoline 4.2L line pressure
4R70W transmission. Slips until engine speed is increased. Line pressure will drop to 25 PSI at idle, increases to 50-60 psi at 1000 RPM, the same with electrical connector at trans unplugged, except max line pressure at 2000 RPM is 200 PSI unplugged and 150 P...		 View
1998 Ford Windstar 3.0L shifting complaint
gentlemen, i have a problem with a ax4s that we rebuilt and have taken apart twice. on this diagnosis a hard code of p1746 epc soleniod circuit problem was tripped. we checked line pressure at idle and had 240 psi. our scan tool pressure jumped from 15 psi to ...		 View
1998 Ford Contour 2.5L charging system
Hello all, We have a Ford Contour thats stumping us.Vehichle came in with a bad alternator,only producing 4 volts.We replaced with a new alternator,found out that fuse to the warning lights were bad so replaced the fuse.The car will run fine in the shop,but it...		 View
1999 Ford Pickup 7.3L Poor Idle Quality, Misfire, White smoke
Hey guy's This is what I got I just replaced the IDM and two injectors. This is a North Slope village truck so there is very low miles and tons of idle time, also this truck was just sitting for years without running... After I replaced those parts it still ru...		 View
2000 Ford Taurus 3.0L Misfire
Hello all. This is my first time on this board so bear with me. I have a 2000 Taurus flex fuel, 3.0 that has what feels lihe a misfire under load. rec a po3o2 code once, cleared code and it has not returned. I can turn the a/c on in the bay and the condition w...		 View
2001 Ford Pickup 4.2L spedometer
This 2001 F150 truck has a 4.2 v6, 5 speed manual transmission, and a 3.55 differential ratio. I inhereted this mess from another tech. The trans was replaced with a used unit for a noise only. Now the spedometer reads very low, about 1/2 true speed. The speed...		 View
2003 Ford Econoline 5.4L trans
see related repair history. the customer complains that the truck wont go when trying to accelerate hard. the trans will downshift and flair if it downshifts to second with vehicle speed high enough to really need third. the trans shifts slightly late with lig...		 View
2003 Ford Focus 2.0L odometer
Good afternoon gentlemen,i am actually looking at this car for another repair shop.I am sorry for the vin code i left it on the desk when i left.The car came in running just fine but in need of a clutch so the clutch was replaced and it all went well.The mecha...		 View
1995 Lexus ES 300 3.0L Cuts out, MIL Lamp on
Hello fellow Techs! This is my first help request. This '95 ES300 came to me with the MIL on and the customer stating that the vehicle runs fine, no performance issues. DTC P0401 EGR Insufficient flow was the only code at this time. Diagnosed and found a fault... Trouble codes: P0401 (Insufficient EGR Flow Detected), P0340 (Camshaft Position Sensor Circuit).		 View
2006 Mercedes-Benz S500 5.0L oxygen sensor
hi, thanks your response Function Level: ¹¦Äܼ¶: This vehicle replaces a new engine because the engine sucked water from intake manifold when driving, but the engine warning lamp gone on sometimes after replaced whole engine.others site of the vehicle are dr...		 View
2002 Nissan Xterra 3.3L No Start
Truck came in on the hook as a no start. First time we hit the key it fired right up. After pulling codes we found the p0340 cleared it after looking at the distributor and moved on to the nise in the front of the engine witch turned out to be the timing belt ... Trouble codes: p0340 (camshaft position sensor problem).		 View
1993 Pontiac Grand Am 2.3L Hesitation
just like i said above cant find much info on this fault		 View
1995 Saturn SC1 1.9L transmission
Customer complains of transmission intermittently slipping. Code history as compiled above. Do I have an electronic problem or a mechanical one? I have no code descriptions for this vehicle so I'm at a standstill. All opinions are welcome.		 View
2002 Volkswagen Passat 1.8L Air bag
the spiral contact shows signs of being shorted out. Alldata doesn't give good detail on the air bag control unit. Does anyone have a good schematic for this system. I suspect the short in the contact reel may have interupted the circuit which powers the air b...		 View

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1987 BMW 635CSi 3.4L RR caliper
I have to close this since I cannot found a used ABS hydraulic unit at this time, customer will use the next 6 months to find one, he is going to park it for the winter anyway, I will keep you post in the future when I have the part.		 8
2001 Chevrolet Cavalier 2.2L pcm
THANKS TO ALL WHO REPLIED, THIS VEHICLE IS A FIX, REPAIRED GROUND WIRE AT BCM & BEHIND INSTRUMENTAL CLUSTER & REPLACED BCM. WHEN REPAIR WAS ALL DONE. I STILL DID NOT HAVE COMMUNICATION WITH ECM. IT TURNED OUT THAT MY "RED BRICK" IS USELESS. I HAD TO US...		 5
2002 Dodge Neon 2.0L Planetary gear sets
Thanks to all 8 who replied! I did indeed find a plugged cooler, as indicated by most all replies. There was converter clutch material in the cooler bypass valve. I replaced the converter, the bypass valve, and installed an external cooler. Your help is greatl...		 8
2003 Ford Econoline 7.3L No Start
I wanna start by tHanking everybody who responded to my promblem/Especially Rob fisk who told me to check the fuel heater at the bottom of the filter for a short becauseIT comes loose.Low and behold there it was.I replaced the heater and fixed the short.And da...		 11
1996 Geo Tracker 1.6L MIL Lamp on
Thanks to all for the help ... most replies stated even tho engine stalls when egr lifted at idle, passage restrictions were still an issue. Inspected following areas and found restrictions : hole inside plenum where tube connects, and where tube connects to a... Trouble codes: p0400 (EGR Flow malfunction).		 6
2005 GMC Sierra 6.6L Trans temp
Thanks for all the responses, sounds like the most common denominator is cleaning a plugged AC/Radiator core, passed along tips to customer, he says fluid change helped(?), and he'll try cleaning out the cores, although he already checked and said they looked ...		 6
1996 Jeep Grand Cherokee 5.2L low coolant sensor
Hello techs most of the replies to this posting pointed to the info center as the culprit, and further testing has confirmed the info center is at fault. The dealer part is out of the question, so I opted for a reman part (on order) and I will close this one w...		 10
1993 Mazda MX-3 Precidia 1.8L water pump
Hey guys and girls.Thanks for all the help.This job took about 4 hours to do and I did not have to remove timing belt,jusy squeek the pump out past the belt.The belt adjuster bolt was seized in the block so I cut the head off and slid the adjuster off the bolt...		 1
1996 Mercedes-Benz S500 5.0L Unknown
we have found that the electrical plug for the trans has been leaking and has wicked up the wire harness has gotten into the trans control module wihch works the asr and evrything else also keeping me from getting into the system with the diagnostic machine. w...		 7
2000 Mercedes-Benz S430 4.3L Stalls
Thanks to all who offered advice.Customer picked up vehicle today.After replacing crank sensor and plug to the sensor the car runs great. Thanks again, John 		4
1999 Nissan Altima 2.4L Hesitation
thank you everyone this one really stumped me for awhile. i got 5 replies with the same answer. check for intake leaks. as soon as i read it i checked and sure enough rite by #4 cylinder was a leak. the owner is back on the road again and happy. thanks all		 11
2002 Porsche 911 3.6L Clutch
Thank you to all that responded, we got alot of responses and a few were very detailed on how to cut the time in half on doing the clutch job. What we learned is, the factory book says to pull the complete drive train which is 18 to 23 billable hours! It turn...		 18
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