Ford Aerostar :: Engine Is Revving / Surging Then Falls Back At Highway Speeds
1995 3.0L 6 Cylinder Aero, aka the Green Goblin.
I've recently noticed that when I'm running between 50-65MPH the GG can't seem to decide whether it wants to stay in D or OD, I think. It's hard to tell whether or not the transmission is shifting or if it's just the engine revving. I don't have a tachometer but it's almost like the engine is revving /surges and then falls back, sometimes repeatedly. Could this be due to a vac line leak?
History- GG has 167K on it. I recently changed the oil, plugs, wires, distributor and air filter. Cleaned the MAF. Due to a failed AC compressor and low funds, had it removed and a bypass pulley installed. Needs a new pipe & muffler which is on the agenda.
Ford F-150 - 1997-2003 :: 2002 4.2L - Surging Bad At Idle
I am having great difficulty trying to figure out why my truck is surging so bad in park or in gear at idle. I have to mat the brake while in drive to prevent me from ramming the car in front of me. It all started when I replaced the air filter. Everything I've read leads me to the EGR valve, but that has been bypassed.
View 14 RepliesFord Ranger / B-Series :: Surging Idle When Start It Up
My son bout his first truck yesterday. 98 ranger sc 4x4 auto 4.0. Beautiful shape 139000 miles. got it cheap as it has issues. its been parked for a year. It has a surging idle when you start it up. rev it to 2500-3000 rpm and it idles fine turn it off and restart it surges again until you rev it. When we test drove it it ran like it was running out of gas/bad fuel pump, sputter at full throttle but accelerate at part throttle. Gauge said under 1/4 tank of gas. We put 3 gallons of gas in it when we got home and it seems to run fine now other than the idle surge. it had a 174 code(lean bank) but if it was running out of gas it should pull a lean code right? I am thinking IAC or intake leak.
View 9 RepliesFord F-150 - 1997-2003 :: 2002 - Idle Surging When Cold
My 2002 F150 (50,000 miles) 4.2 is surging when cold. I just got done replacing the pcv valve. I noticed it was running better so I cleared the service engine light, but now is surging when the engine is cold. I live in FL so it does not get that cold like up north. The following codes were the ones that the pcu put out, P1131, P1115, P0174 and P0171. I am leaning towards changing the IAC valve and maybe the oxygen sensors.
View 5 RepliesFord Ranger / B-Series :: 1994 3.0 4x4 - No Start / Surging Idle When Hot?
I'm having trouble with my ford ranger. It cold starts fine, and drives fine while cold. Once it warms up the idle is barely keeping it running, or surging 1000-1500 rpms above normal idle. Any gas I apply while hot idling will stall out the motor, and will not restart. It acts like it is very flooded when I try to do a hot start. I pulled the IAC valve off and cleaned it even though it was very clean and actuated properly. I also cleaned my MAF, and that changed nothing. I really do not want to just throw parts at it hoping I guess right before I'm broke. Not sure where to go from here, and I live in Alaska where I am fixing this outside.
View 1 RepliesFord 6.0L Power Stroke Diesel :: Intermittent Surging / Rapid Idle
I replaced the exhaust back pressure sensor and the readings on my sct programmer didn't change at all so I don't want to keep blindly throwing money at it if one of you has experienced this and found a cure. The interesting thing is it never throws a code or check engine light or anything according to my sct. Doesn't even show that the egr valve is unplugged. I have read that it could be a bad turbo, vgt solenoid, icp, throttle positioning sensor, or a couple other things.
It feels like I'm the front car in a bump draft in cup racing when I'm at a steady speed. The truck has arp head studs, new style egr cooler with the tubes, coolant filtration, new oil cooler, new ficm, blue spring, all filters have been changed in the last month.
2004 powerstroke surge/ rapid idle - YouTube ...
Ford F-150 - 1997-2003 :: 2000 - Engine Surging At Idle And In Gear
My truck is a 2000 model 2wd with the 5.4 engine. It has about 234000 miles on it. It suddenly started surging last night rpm jumping around approximately 4-600rpms each time. I noticed that once I got up around 50mph it would smooth out...
View 4 RepliesVolkswagen - Golf :: 1999 - Faulty Idle Regulator - CEL Came On?
I recently bought a 1999 VW Lupo (essentially a two door Golf) with 30000 miles on it. My mechanic suspects it sat idle for a long time. Recently the check engine light went on, warning of a faulty idle regulator. What effect would you expect to see as a result ?
View 7 RepliesFord 6.0L Power Stroke Diesel :: 2006 F250 Started Surging At Idle
Just bought a 2006 F250 with 6.0. A week or so ago, it surged once at idle at a light. Sort of felt like someone bumped into your rear. It has gotten more frequent over the last week or so. Now it does it often. It tends to rev up and then back down again over and over. Then it will clear up again. My brother said his 7.3 used to have a similar problem (as did quite a few others apprently) and it was the Cam positioning sensor (CPS). Where is it located?
View 14 RepliesFord 6.0L Power Stroke Diesel :: Surging Idle After Long Highway Trips?
A few weeks ago i had a surging idle issue very intermittently, and it went away for a while so i stopped thinking about it. Just got back from a weekend in vermont, about 130 miles each way, and i noticed as soon as i got to vermont and came to a stop sign it was surging, and when i just got home it was surging again. Why would this have picked back up after long stretches of running for a while? Runs great as far as i know, just have this surging idle for some reason.
View 14 RepliesFord 6.0L Power Stroke Diesel :: Fluctuating Idle / Surging And Stalling - ICP Bad But Not Leaking?
So any ICP sensor been proven bad but i was not leaking oil? The symptoms of my truck sound similar to a bad ICP...fluctuating idle, surging, stalling, but it does run and start. IT tends to start acting up when it hits operating temp.
I have an 04 and the ICP sensor is in the easy spot to get to on the valve cover vs under the turbo (that's awesome) so its an easy swap. but just wondering if there is any way to test it over simply swapping it. I do not have a monitor yet but a dongle is on order and will get the torque app for my tablet.
Ford 7.3L Power Stroke (1999-2003) :: Idle Surging / RPMs Will Drop By 300 Or 400 For A Few Seconds
My '03 7.3 is "surging" on idle. When warmed up, and idling, the RPMs will drop by 300 or 400 for a few seconds and then will correct and shoot back up. It cycles like this (every 5 seconds-ish) continually . I just put in a new IDM and checked the UVCH - is there a separate idle control mechanism that I need to have a look at? (2003, 7.3, 214K, stock).
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: F350 - Surging And Rough Idle While Driving
I have an early 99 F-350 with 268K miles. It is bone stock right down to the factory exhaust. A couple months ago I started have a rough idle and surging while driving problem. I never got a check engine light but I borrowed a scan tool from a friend and pulled the following codes: P1690 (wastegate solenoid), P0381 (glow plug circuit malfunction), P0269 Cylinder 3 Contribution/Balance Fault, and P0284 Cylinder 8 Contribution/Balance Fault.
I did some research and everything I read said it was most likely the CPS. So I changed the CPS. The truck ran fine for for a few days but then it started acting up again occasionally. I noticed that most of the time when it acted up was at start up when the engine was cold and I also figured out that if I shut the truck off and re-started it (sometimes I had to do it 2 or 3 times) it would clear up and run normal.
A buddy of mine that has a 2000 F-250 said he had a similar problem with his truck and it ended up being the ICP sensor. We switched his ICP with mine and I changed my oil at the same time (because it was due for an oil change). My truck ran flawless for over 2-weeks (over 200 miles) so I put a new ICP in my truck. Note: my buddy did not experience any problems with his truck with my ICP in it.
I've put about 700 miles on the new IPR and the truck has started to act up again. Once again shutting the truck off & re-starting it will clear it up and still no check engine light. I took it to a local "diesel specialty shop" while it was running rough and they hooked it to their scanner and got P1280 (Inj. Control Pressure Low), P1690 (Wastegate Solenoid Fault), P0381 (Glow Plug Indicator), P0269 Cylinder 3 Contribution / Balance Fault, and P0284 Cylinder 8 Contribution / Balance Fault.
They never did anything other than hook it to a machine & check the codes but their diagnosis is my High Pressure Oil Pump is going bad and my #3 and #8 injectors are going bad. They recommended I let them replace all 8 injectors and the High Pressure Oil Pump. The problem I have is they can't give me a REASONABLE explanation as to why re-starting the truck a few times clears up the problem.
Ford Aerostar :: 1986 - Won't Idle - Loss Of Power - No CEL
Ok .. here is my problem 86 Aerostar up until 3 days ago ran perfectly. plenty of power, idled great no misses, well the other day i washed her up, inside and out. 1sr time in almost a year (gross) so under the hood i see that the air ducts were kind of loose, so i tightened up the clamps. and later drove to the store and low and behold she won't idle and she surging, forward to today i drove to Wrigley auto store and barely made it. connected to their hand-held scan tool and performed the KOEO test and got a undefinable code referring me to a website i then performed the koer test and it would NOT complete the diagnostic for whatever reason, i again performed the KOEO test and it gave me a 22 MAP sensor and O out of range. I could not locate the mass air flow sensor, as everything i read the past 2 days pointed me in that direction. I picked up some cleaner to take off the throttle body and TPS and IAC to clean them 2 parts. am doing that now .. i will return with my results from that shortly ... What/ where this MAP sensor i believe the Chilton manual says that the areostar has the MAF sensor but again i could not locate it
View 2 RepliesFord Aerostar :: Warm Engine Idle Shake
Here's another idle problem. I have a 1992 aerostar, 3.0 2wd with 245,000 kms.
I have been working on this van for weeks now getting it ready for summer. I have done a complete tune up consisting of wires, plugs, rotor, cap, pcv and all filters including gas, air and oil. I have checked the vacuum hoses as best as I could and all seem fine.
Here.s the problem. I start the van and it idles great. The engine doesn't move. After a few minutes it slows down a bit and starts to shake. Once it is completely warm and has been driven for an hour, it shakes noticeably. It has lots of power and gets good mileage. It never has a starting problem and never seems to be close to stalling. I am suspecting it is one of the various pollution control items such as the MAF, IAC or 02 sensor. Is there a way to check them at home?
While under the van, I noticed a cable that goes from the transmission into the firewall. A bracket holding it in place broke and the cable was rubbing against the exhaust pipe and burned through. Could this be related? I taped up the cable and tied it up and away from the pipe.
Ford Aerostar :: 1995 - Rough Idle / Jerky Acceleration
Symptoms: (162K miles, last tune up about 70K miles ago) rough idle, and poor acceleration. Occasionally, the car really jerks while accelerating. I read about new plugs/wires, and something called seafoam. I think the highway patrol would pull me over as a gross polluter, but that too seems worth a try. Various sensors and hoses, I'm frankly overwhelmed. Where to start?
Something I learned today: My car was made in 10/95. Apparently, I can scan for trouble codes?!? How and where? Is it OBD I or II or something else? Dumb question: I can't even get the interior engine shroud off. I found three clamps, but it still hangs up near the top. What am I missing?
Ford Aerostar :: 1992 - First Crank Rough Idle On Startup
1992, shory 3.0 130K MILES
On start up runs very rough, will stall if not power braked or revd a little on start up/out of the driveway.
VOLT METER STARTS GOING NUTS!!
After a mile/warm up,,, runs great. But sometimes even when its hot, it will still try to do the rough idle briefly after just a few minutes restart. Give it a few revs at that point and its good. And once in a blue moon it will do it randomly at a stop light,, out of the blue. Very rare
Ford Aerostar :: 1986 - No Power / Idle Is Slow And A Bit Rough
1986 3.0 liter. I have a problem, concerning no power. The van starts and idle is slow and a bit rough. Something is not allowing the engine to spool up much past an idle, thus moving past 10 mph is not an option. When you try to rev it, it's like it's either starved of fuel or the ignition advance isn't working. As it is basically winter, with a temperature today of about 25F or less, it was suspected that I'd put in bad fuel (as in, containing water) and possibly the system is partially froze.
When I turn on the key, I can hear the fuel pump pressurize and then shut down, as it normally does. Gas line antifreeze was added but no change; we limped the vehicle at 15 miles or less for almost 2 hours. Likely if the fuel system had ice in it, it would've cleared out by then. As it happened on the road, I'm at the mercy of a shop of which/whom I do not know. Would it be advisable to instruct the mechanic to check for fuel at the "Schneider" or fuel pressure release value, located near the manifold?
Chevrolet - Kodiak :: 2005 - Surging At Idle
The truck runs fine and gets the same fuel mileage that it always did and there are no codes...It has the Allison transmission and the Duramax 6.6 and it is a 2005 model C4500 Top Kick capacity 15000lbs. The truck has 254780 miles on it. I can minimize the surging by putting Marvel Mystery Oil in the diesel. Some times it is worst than others ...Sometimes it goes away altogether...Sometimes it will go away if i shift it out of drive at a stoplight.....It happens the worst when I have been at speed for a hundred miles or more or less. Very mysterious...The computer must be sensing a fault and speeding up the idle a hundred rpms .....
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