13 years of experience. It normally idles around 800 or 900 rpms, but lately it will slow down to 400 or 500, then burst up to 1100 and repeat the process again. Setting up your timing like this has a stabilizing effect on the idle. When I take my foot off the gas pedel the car will continue to stay at the same spped for 15 to 25 seconds. When the idle speed drops, the timing advances, increasing power and moving the idle speed back up. 9L cooling fan wont turn on until engine is too hot (near red line). 1999 explorer 4. And if the power steering is turned at the same time she really drops low to the point of shaking and almost coming to a stall. I have 1600 miles and this just happened. The truck is cold. $15. 55 volts at idle fans off and 14. KOER - Fuel. Unplug it and just turn on key and check for voltage. In the defrost setting, the AC is used to dehumidify the air coming into the vehicle to help. on June 25, 2017. 0L, 3. Usually a faulty cooling fan relay will produce a few symptoms that can alert the driver that service may be required. When I put the truck into gear the RPM's come up to about 300 and the vehicle surges then RPM's drop and it's safe for me to move forward. 00 "tracer" fee and $40. . idle stumble with radiator fan voltmeter . turn on the air and the fan comes on and cools off . Excessive exhaust clogging will cause the needle to drop to a low point even if the engine is only idling. The following sections let you explore the most common causes. 2004 focus: car first. If the air con is on the engine fan is on as well, this is what draws the large load and makes the revs drop. cjcoburn Member. Pressure Shot Up To 425psi, when AC Was Shut Off Pressure Would Drop Real Slow, So Fan Would Stay On High Unless You Switched It Off. I have a brand new powermaster alternator, 106 amps, 75amps at idle. My 2011 GT has the idle drop from the 800 range to the 600s every 45 seconds or so when I'm stopped at a red light with the AC on. 00 "tracer" fee and $40. Yes your are probably right the IAC motor is causing the problem. 00 "tracer" fee and $40. The alternator doesn't run the system, although this is a popular misconception. . The AC will run fine and super cold for 5 to 20 minutes, then the AC clutch shuts off and the air starts blowing warm. Car stalls. 2 Ltr Fuel Pressure Problem. Submitted: 17 years ago. Conclusion. Then they will begin to be erratic. 94 ford escort lx 1. To properly reset the idle: Write down all of your radio stations, disconnect the battery for 5 minutes, run the engine at 2500 RPM for about 2 minutes and allow the engine to Idle. . The idle seems to be running a little high when I come to a stop. If not working properly, the engine may not cope with the loads produced by various systems in the car. New plugs, wires, coil, egr vaccuum control. Jun 9, 2015. hi there,,,ive recently bought my partner a little escort 1. Posts. If I plug in while the fan is going from above step, the fan shuts off. A bad plug or plug wire is a possibility. This fan is usually located at the front of your vehicle, either just in front of the radiator or just behind it. This means that the switch port gets full oil pressure while the engine is running. 00. 2 to 13. Once warm idles a bit and decreases to 0 RPM. Want Answer 0. 1950ChevySuburbanMember Emeritusfrom Tucson AZ. 4 won't idle its up and down and cuts out i've changed the m. vehicle will not idle. Have a friend or colleague turn the key to the “On” position, but don’t start the car engine. 8/351W) - idle drifts down at traffic lights - I have a 69 ford 302 running a mild street cam and using 1969 351W heads on it . A/C works fine. This will help determine if the alternator is at fault or if it's a problem with the wiring. A example of an additional load would be turning the steering wheel left or right with the A/C on. This valve gets real gummed up, probably need to take apart throttle. Since your check engine light is not on and no codes are present, it would check and clean the IAC (Idle Air Control) valve. automatic trans. $15. start car. I havent replaced the one imrc valve that doesnt seem to be working properly but after i finally got the engine started the service. a. 0 liter engine. It's not a fuel problem. It gets so low the car shakes and feels like it's gna die on me. 4 Answers. Computert say enfine idle sensor buty I can't find that - Ford 1988 Escort EXP question. When the fan comes on again the process starts over. When the cooling fan kicks on the rpms take a dive, especially when at an idle. We use cookies to give you the best possible experience on our website. ENGINE OFF. Acting like it was out of gas. No other codes. Pressure has been checked by two shops, both made tiny adjustments but ultimately said it was fine. In most car models, the radiator fan should start when the coolant temp sensor is disconnected, and the car is running. Idle Spark P = 40, D = 502000 Ford Escort SE Automatic 181,000 miles 2002 Ford F-150 149,000 miles 1993 Ford Escort LX 2-door 5-speed 300,000 plus miles on original engine (The 93 has a different owner now but it keeps on running) 1966 Ford Mustang 289 V8 Automatic Factory A/C (Restored, in retirement)New Ford question. The cause could be the carbon buildup, a faulty valve of the controlling air system, or a dirty throttle body. 1987 - 1996 F150 Still running strong! Talk about your 8th and 9th generation Ford F150 trucks. 26,513 satisfied customers. $15. That means you’ll need to pay both parts and labor costs. O-ring Gaskets Gone Bad. 1999 Ford Escort idle problems. Turn off engine and disconnect throttle position sensor harness connector. my zx2 is starting it will idle for a few seconds then starts to idle rough. thank you. 5v and then returns to 13v. Local Auto Zone had part. A blown fuse – when a fuse blows inside the engine, it could cause the IAC motor to stop working correctly. Posts: 2. With the heater on in low temps you may also have a supplemental electric heater that draws a. The 1999 Ford Escort has 6 problems reported for idles roughly, stalls. On some cars it’s integral with the throttle body, other cars don’t have one at all. I have a 1997 Ford Escort with an AC problem. neither did the job. When I turn one fan on the voltage goes from 14 to 13 and when I turn the other fan on it drops again from 13 to 12. Put car in gear idle drops but then seems to adjust a little. You lost your charge. Idles fine in park. replaced an A/C fan motor. Whatever the reason is, it would be better to have your vehicle checked regularly. Posted June 13, 2021. As I said the car drives normally and at the low idle, just as it drops, it seems to run a little rough. I would suggest taking it to a qualified technician and have. $15. Idle Air Volume Learning Procedure - Ford 1997 Escort question. There are 4 most common reasons why an engine has a rough, loud, or shaky idle when it is in the parking position or in neutral. Browse Categories Answer Questions. Thread starter cjcoburn; Start date Jul 4, 2017; Prev. Your engine stalls: When the engine is first started, it will require more fuel in order to idle smoothly until it’s warmed up. Changed plugs. Ford reports that the symptoms show as an idle speed that drops below the recommended speed or the vehicle exhibits a. When the oxygen sensor fails, the vehicle’s computer receives inaccurate information and may cause the engine to run too rich or too lean resulting in rough idle conditions. This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the. when i went to start car, it will not run. $15. I replaced the fan hoping it was bad with no change. Apply 2-3 drops of threadlocker (EOAZ-19554-AA) to the bolts. 00 for parts, I saved. When my HVAC is on, the RPM's will suddenly drop from approximately 650 to 300, almost causing my car to stall. 9 4 cyl engine , at cold start the engine revs ok but as it get warmer it start to idle rought and die , with a scantool the o2 sensor always reed lean at idle , after checking fuel pressure , air mass meter , EGR valve , and potential vacuum leak at intake and hoses , its the PCV valve. Those misfires, in turn, can cause things like rough idle, stuttering, and poor performance in. Turn on AC idle drops way down. Submitted: 13 years ago. . Then Rpm's drop from 600 to 100. While the engine is warming, make sure it deactivates the choke linkage. idle slowly drops to 1800 rpm and a few seconds. Any help is appreciated. Print this page; Share this page; Add Your Answer. I just got through removing my upper intake plenum and cleaning out my. 0 rough idle at stop with air on ok with air off. Rough idle aka rpm drops. The only other things I can think of is the electronics controlling the IAC. Gotta strange problem I've been trying to track down for months now. thank you. 5: Start the engine (do not press the gas) and let it idle for five minutes, then shut it off for thirty seconds. Ours Was Actually . When ac is on cools great. Any idea what. Ford Escort ZX2 Starting Stalling and Idling Problems. The Problem can be with the engine not getting enough ventilation. If I plug in while the fan is going from above step, the fan shuts off. After my car is warmed up and the radiator fan turns on the rpm's drop to under 500 and the car shakes as if it will die then it jumps back up then settles back around 750. Engine may stall with the A/C on and/or while adding additional loads to the engine at idle. but will not idle past 500 r. Here is the issue, I will try to keep it short, but it probably wont be. The new issue I have been having for a long time is that when the car is warmed up it still struggles to idle. FORD SUPPORT FROM THE START. Or driving with the blower motor on its about 12. 1. New DD-2009 Mustang GT/CS candy apple red (For Sale)2003 XLT 5speed swap, Hurst Shifter, STX valance SLP drop coils, thunderbolt hood scoop,Screamin demon coil, Flo-pro super v, 1. Remove battery and battery tray. The drop is From the fan taking power from the motor since the alternator request more power via using the serpentine belt so it can power the fan this causes. SOURCE: 1995 ford escort idle problem Hi , i have a 1995 Escort with 1. Yes the fan cycles with the compressor. Local Auto Zone had part. 0 V6 non-flex fuel Auto Ranger. read more. I would assume the Idle Air motor is probably not functioning correctly or somebody has screwed the BISS all the way down trying to get the car to idle down at. 1; 2; First Prev 2 of 2 Go to page. AC and in gear low idle rumble vibration. I have checked for loose hoses,(vacuum), checked to see if filter was installed correctly all and cant figure why it wont run. It was idling OK, now it stalls as soon as the fan comes on. If you have access to the web, try a google search for “1995 Ford Escort idle speed control” or something to that effect. RPM Drop While Idling. START the engine, and check the idle rpm using a tachometer. MS1/Extra has a fairly. Over time, the constant exposure to heat, carbon deposits, or age can cause the sensor to fail. 1. replaced an A/C fan motor. Mar 19,. if its a short then it can't be any one wire. auto trans. The idle speed on my 2003 Aviator drops below 700 and the torque converter falls off line and car starts free rolling. Put the ground lead of the meter right on the alternator and positive lead right at the output post of the alternator. a little lean. The car will start but once the car is started it starts to idle low and then just turns off, the engine when running sounds rough. when the AC is on, and during throttle off, such as coming to a stop. If I unplug the iac the problem becomes worse. removed throttle body cleaned and replaced. When my HVAC is on, the RPM's will suddenly drop from approximately 650 to 300, almost causing my car to stall. Good morning all, My 2. The average idle speed in most cars is 600 to 1000 RPMs. FORD TECHNICIAN. Your cooling fan will usually be inactive, but if your car is stationary (with the engine running) or the temperature starts rising, it will kick into action. When I turn on my heater in the morning I notice a fairly significant voltage drop when I turn on the blower motor. This situation can also turn on your check engine light, with a lean-mixture trouble code triggered in the engine computer. Category: Ford. thank you. A rough idle when the air conditioning is on may be caused by: A faulty or dirty IAC valve. 7L, and 4. #13 · Mar 5, 2011. Went from low idling to the idle getting too low to keep the battery charged to the above mentioned issue. When at idle at approximately 700 rpms and the fan kicks on I get a large voltage drop and rpms dip down to 400 and then surge back to 1000 before leveling back off at 700. 2. A fully charged 'good' battery should produce 12.