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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 20, 2005
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Open Help Requests for Ford
Help Request Answers
1979 Ford F-150 Custom 6.6L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: F14MRFA835
the engine runs real rough on a cold startup. #1 and # 6 cylinders are not firing at this time. the engine vacuum is around 10 to 12 inches and bouncing a little bit. the compression is 110 on both cylinders and running compression is 75. there is good spark t...
1991 Ford F-350 Custom 7.3L low brake pedal VIN: 2FTHF36M6M
with vehicle running pedal slowly sinks almost to floor, will stop ok normally, but not with weight in back, and with extended stopping distances and increased pedal effort to stop. never goes fully to floor. vehicle has a belt driven vacuum pump - diesel, sus...
1993 Ford F-250 XL 7.3L Excessive Emissions, Misfire VIN: 1FTHX26M6P
I have to state up front, I am NOT a diesel mechanic! This thing misses and puts out clouds of white smoke when cold. When it warms up the missing goes away. The billows of smoke drop down to mesquito sprayer white clouds. It runs well when warmed up but ve...
1995 Ford F-250 XL 7.3L injection VIN: 1FTHX26F4S
We have leak down from the oil tank feeding the high pressure pump. Filling the oil tank after an overnight shut down will result in an instant start. However if tank is left empty there is an extended crank period to start. We need to find the check valve tha...
1996 Ford Ranger Splash 2.3L Cuts out, Stall, Misfire, Eccessive pinging VIN: 1FTCR10A4T
Hope you have an idea on something I overlooked on this one. I have this Ranger that has been a pain in my side. Customer installed new timing belt, Plugs, and Wires and now engine runs rough at idle and stalls. It also has a very loud pinging under snap throt...
1997 Ford Explorer XL 4.0L Serp Belt VIN: 1FMDUZ4E4V
I have a 1997 Exploder that keeps wearing the belt off. It skips the rear groove on the balancer and shreads one groove off the belt. We have tried everything we can think of to repair this. I am asking if anyone has come across this and has a repair i can use...
1999 Ford Explorer XL 4.0L Poor Idle Quality, Hesitation, Cuts out
This explorer idles rough and lacks power.You can drive it but you have to feather the gas.Vac. reading is low and intake gaskets were replaced.Also tried a new maf sensor,no change.Using snap-on scanner baro reading is low at 22-27in.Any help would be appreci...
2002 Ford Taurus LX 3.0L MIL Lamp on VIN: 1FAFP55U52
this vehicle has 12 volts at egr solinoid and is setting code p1401. we ran diagnostic tree and it calls for repair of short circuit in ckt 361 or replace ecm. has anyone seen this problem and/or code? it seems unlikely that the ecm is bad because the vehicle ... Trouble codes: P1401 (dpfe ckt high voltage)
2001 Lincoln Continental 4.6L Unknown VIN: 1LNHM97V51
This is the strangest thing I have ever seen. I am at a loss. This car idles smooth & drives smooth, but if you take your foot slightly off the brake and let the car creep very slowly the car will shake similar to a very warped brake rotor but it is faster tha...
1995 Mercury Grand Marquis LS 4.6L MIL Lamp on VIN: 2MELM75W1S
Thanks to all techs who respond. This vehicle came into the shop with the check engine light lit. The code was 401. Several test were performed. During the test it was discovered that the EVR wasn't putting out the required voltage, so it was replaced. We thou... Trouble codes: 401 (egr flow insufficient), P1408 (egr flow out of self test range)
1995 Mercury Cougar XR-7 4.6L engine VIN: 1MELM62W6S
makes big smoke clouds after extended idle and uses alot of engine oil. approx 1 qt in 500 miles. before condemn engine for overhaul is there any common problem that could cause this? we are a chevy store and do not have access to ford svc info. did not find a...

Fixes & Summaries for Ford
Fix/Summary Answers
1989 Ford Bronco II Eddie Bauer 2.9L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1FMCU12T1K
Again, many thanks for all the suggestions. After finding and fixing several items on this old beast, the final fix was a fuel pump. Vehicle history showed a new pump in the summer of 2004, when we tested it cold pressure was 37 psi (spec is 35-45psi). When th... Trouble codes: 41 (EGO reading system lean).
1990 Ford Escort LX 1.9L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1FAPP9899L
The fix on this car was a new main engine pulley due to the timing mark on the outside of the pulley had rotated causing the actual timing to be off by 15 degrees. Trouble codes: 21 (cts), 22 (map), 41 (Lean), 42 (Rich), 19.
1992 Ford E-350 Econoline Club Wagon Custom 7.3L excess white smoke VIN: 1FTJE34M2W
We set the timing on the vehicle and the smoke is 'All Gone!'. Dealership mis-diagnosed this one! Thanks for all of the help! Iatn and all of the fellow techs are a great tool!
1993 Ford F-150 XL 4.9L Electronic VIN: 1FTDF15Y6P
Hi All, sorry for taking so long to close this request. The problem with this vehicle was a valve being stuck in the valve body. Thanks to all of you that took the time out to respond it was greatly appreciated.. Thanks again..
1994 Ford F-250 XL 7.5L Poor Idle Quality, Hesitation, Surge, Poor Fuel Economy VIN: 1FTHX26G8R
Thanks for the replies on this matter. Checked for vacuum leaks, fuel pressure and I see how the oxygen causes the vehicle to go into open loop at an idle. I disabled the air injection system which one person recommended and no change. After many hours of test...
1996 Ford F-350 XL 7.3L No Start, MIL Lamp on VIN: 1FTJX35F8T
Sorry for taking so long with a fix,I simply forgot to close this help request,this truck had a Dealer installed alarm/Theft system that was tied into the idm/pcm comm. circuit,I simply removed and disconnected the theft device and the truck started right-up,.... Trouble codes: 1663 (1667 -), 1667 (1668 -), 1668.
1996 Ford Escort 1.9L Misfire, MIL Lamp on VIN: 1FALP14JTT
car came back still running good and ses light on, cleared code an let it sit overnight, drove next morning without a problem and no light on, finally on 3rd test drive heard a noise( like a lifter clack-very metallic sound ) coming from cylinder #4 sounds int... Trouble codes: P0304.
2000 Ford Excursion XLT 6.8L Misfire VIN: 1FMNU41S5Y
Thanks for all the great replies.The problem with the injector #10 was that the ground signal cable was open,now is running great.Thanks Thomas. Trouble codes: P0310.
2001 Ford F-250 Super Duty XL 6.8L emission test VIN: 1FTNF21501
unknown to me, this vehicle was nor OBD2 compliant. These monitors will never be ready. A few adjustments on the emissions machine and all is ok. Many thanks to all the replys. You guys are the best!!!
2003 Ford Ranger Edge 3.0L Poor Idle Quality, Misfire VIN: 1FTYR11U13
well thanks to you all at iatn this one is gone ,i forgot to mention to everyone that i did try secondary ignition first ,sorry about that .however i believe maf was the culprit, after raising my stress level some this one is fixed .you guys rock!!! Trouble codes: P0306, P0316.
2004 Ford Explorer XLS 4.0L radio VIN: 1FMZU72EF4
Well I finally got a hold of someone who speaks english enough to understand. He gave me the four digits i needed to reprogram it and work like a charm
1992 Lincoln Town Car 4.6L Cuts out, Misfire VIN: 1LNLM812NY
Hi guys! Sorry its taken so long to get back on here to post the fix. Still helping our relatives in the south get back on their feet. Mr. Rod [...] were on the money in suggesting checking the EGR system. The va...
1999 Lincoln Town Car Cartier 4.6L Charge light VIN: 1LNHM83W8X
Thanks to all who responded so soon. I forgot to metion that I did check the A/C waveform on this alternator and didn't see any problems. It was a unanimous concensus that the alternator was the culprit and indeed it was. After replacing it the light has staye...
1999 Mercury Tracer LS 2.0L No Start, Stall VIN: 1MEFM13PXX
After driving this vehicle about 400 miles with a fuel pressure gauge, we found that at times the pressure would drop to about 14 psi. the car would still run with no problems, we replaced the fuel pump and sent the vehicle on its way, the customer says the pr...
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