Ford F-150 - 1997-2003 :: Engine Surges When Throttle Is Static
Aug 5, 2016
For example. If you are going 30 mph the engine surges. It surges when the throttle is in the same tps location.
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Aug 5, 2016
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Ford F-150 - 1997-2003 :: 1999 - Surges When Hot?
My 1999 5.4l runs great then after driving about 20 minutes, surges & stalls if you try to accelerate. Then the idle surges from 600 to 1500 (back and forth). Connected a fuel pressure gauge, and it shows 30 then drops to near 0 then bounces back to 30 then near 0, then back to 30 etc. No codes are reporting. What to check? Let it cool down, process repeats. Has new fuel pump & filter.
View 4 RepliesFord F-150 - 1997-2003 :: Radio Static When Heat On?
Yea, so early in the morning I turn on the radio am, and touch the heater/cool and the static is really bad. It's bad before I touch the heater on but is worse during.
View 3 RepliesFord F-150 - 1997-2003 :: Hesitates / Surges When Climbing Hills
03 supercrew 5.4. I've been having problems climbing hills. I'm on a trip and the truck surged fron do then to drive and stopped. Let it sit for 30 mins or so and it was good. Drove another 500 miles ans started again going up some hills. The first time it was 110 out and the 2nd it was 90. I'm pretty sure it's a cop but of course no cel. It does not seem to of over heated either. Can the cops overheat? Do you recommend a diagnostic, will this show up if no cel has show?
View 5 RepliesFord F-150 - 1997-2003 :: 2001 - Surges In Hot Weather And Losing Power
2001 F150! It does this weird little surge, burping and farting away...but only in ambient heat. The engine never gets hot, it never over heats. What have we done? A full tuneup with new plugs and boots, oil change, new air filter, gas filter. It did it again...took it back in and had the fuel pressure checked, fuel injectors are fine...it can't be the fuel pump, it runs great unless it is hot weather. It has twice blown the P0171 system lean bank 1 code and has gone away after the tuneup and again after the new o2 sensor. It runs great, except in hot weather, starts surging and losing power...
View 9 RepliesFord F-150 - 1997-2003 :: RPMs Drop / Surges Over Bumps Only - CEL Flashes On
So I know there has been lots of posts on surging issues and how to troubleshoot. My truck is a 97 f150 4x4 xlt 4.6l v8. I have noticing surging and dropping in my RPMs lately. No CEL. I have kept a journal when I notice when it happens. I only have issues when I am driving around 40-50 mph and if I go over bumps/pot holes/rough spots in roads or when I'm braking over bumps/pot holes/rough spots, my truck surges/RPMs drop CEL flashes on and off only during these instances. Makes me think something could be loose or something causing this. It has stalled at times when having to brake fast (yellow light, etc.). Where to look first? 1997 F150 4x4 4.6 V8...
View 1 RepliesFord F-150 - 1997-2003 :: 1999 4.2L - Hot Start Rough Idle / Surges Sometimes
I am new to FTE and have a question about my 99 4.2l. After it warms up, i can shut it off and about 30 mins later try to start it again and it will idle very rough and sometimes stall. I also noticed that it surges sometimes with just off idle throttle when its cold. I am not getting any codes thrown, here's what I've done so far: cleaned the maf and throttle body, and it didnt work at all. I did convert my cht over to ect by using the plugged coolant outlet on the lower right side of the intake manifold and extending the connector wires which actually solved the problem a little bit but it still does it from time to time.
More info about the cht to ect conversion, but after reading that ford did away with them in later models i wanted to do the same while at the same time making it so much easier to swap it out if ever needed. No more getting under the truck. And where im at cht's are kind of hard to come by without having to order them Anyway, it worked flawlessly! I only had to extend the wires by about 8", wrapped them and ran it along side the injectors for a clean factory look. Ill try to post pics soon...
Ford F-150 - 1997-2003 :: Idle Rough / Nearly Dies / Surges Above 80 Degrees
'1999 F150, 5.4L, 85K miles ....
Fuel pump failed last year, had it replaced. Ran fine for a week or 2, then one day went into limp-home mode. Mech replace fuel pump relay, again ran fine for a month or so. Now when the ambient temp gets above 80F or so (yeah, it has already this year - I'm in Central TX), engine at full op temp, I'm experiencing some sort of heat-soak issue. Engine runs fine when cold, and at normal op temps on the road, but if it is parked for 15 - 20 minutes then restarted, the idle goes all funky - nearly dies, surges, etc. for a minute or 2, and then it seems ok.
I would go back to the same mech, but he had to close his shop due to health issues, so I'd like to see if I can resolve this. So, it is definitely heat-triggered, and "seems" like a fuel issue, but of course it could be some electrical contact having difficulty above a certain temp.
Ford F-150 - 1997-2003 :: When Engine Revs It Continue At High RPMs For About 10 Seconds After Letting Off The Throttle
2001 F150 5.4 4x4 148K... I recently replaced the intake manifold on this truck and when the engine revs it wants to continue at high RPMs for about 10 seconds after letting off the throttle. When driving, it almost wants to go faster and the gas mileage is really bad. Had some codes come up and took it to AZO and had them checked. P0171 & P0174. Guess I need to do some testing on the MAF and injectors.
View 2 RepliesFord - Focus :: 2003 - Engine Surges Under Load And CEL Came On?
I have a 2003 Ford Focus ZTS with a ZTec 4-cylinder motor, 5-speed manual transmission, @145K miles (one owner). I had the fuel pump replaced in October 2012. For the past couple of months I have had intermittent engine surges when the car is under load, and it is most prevalent when undergoing heavy acceleration or when going uphill. The engine idles smoothly at about 800-1000 rpm. The problem seems most prevalent when I have more than 1/2 tank of fuel in the vehicle.
I have noticed that when the car is in cruise control mode and surges occur the accelerator pedal depresses as if the engine is trying to get more fuel. Spark plugs, Timing belt, tensioner, and water pump were changed approximately 30K miles ago. Alternator replaced @10K miles ago. No visible leaks around the head or valve covers. Vehicle is driven mostly highway miles in low dust environments. Engine light normally doesn't come on, but today the surges were worse than normal and the engine light came on several times over approximately 1 minute interval. Then the surges stopped and the engine light went out and did not come back on.
Ford 7.3L Power Stroke (1999-2003) :: Engine Surges When Driving
I have a 99 7.3 with 40,000 on a rebuild,injectors I don't know they do pass a buzz test. What happens is when driving say at 30 mph and I am not needing to give it throttle but i don't back all the way off the peddle sort of at a neutral point my engine will sound rough and seems like its not hitting on all cylinders.it runs great when i give it fuel and idles fine its just the point in between it runs erratic.last year when chasing a no power problem. I did rebuild the ipr, new fuel filter, icp and harness,cps and what fixed it was new fuel pressure regulator (brass was gaulded and causing fuel pressure to crash). No mods other than a bullydog tuner that never goes past #2 setting. I do have a auto ingenuity scanner, what to look for or already know what my issue is.
View 14 RepliesEngines - Gasoline - Hummer :: 2003 - Engine Surges 300 To 400 Rpm
I own a 2003 Hummer H2 with a 6.0 liter vortec engine with only 62,000 miles. At 50 to 55 mph 1500 to 2000 rpm the engine surges 300 to 400rpm with foot steady on the throttle. There is no engine light on and I,ve checked for codes with a code reader from the auto parts store. No error codes. I've cleaned the mass flow air sensor and throttle body with no change. My next thought was to replace the throttle actuator control sensor or accelerator pedal position sensor. I do enjoy working on my own vehicles so have been reluctant to take it into the shop.
View 1 RepliesPassat (B5) :: 2003 - When Driving At Constant Speed The Engine Surges About Once Every Second Or Two
We have a 2003 Passat GLX, 43000 miles, V6, AWD. I've noticed recently that when driving at constant speed the engine will surge about once every second or two. It's very regular, and on a smooth road I can also notice a bump in the drive train, very similar to road bumps.
I've taken it to a dealer, since I believe it is a transmission issue, and therefor covered under warranty. There are no computer codes stored for faults in the transmission, they've said. However, they started by pursuing the fuel injection system (though no code was stored), and then wanted to fix a faulty coolant sensor (since found not to be faulty).
Ford F-150 - 1997-2003 :: Surging When Only At A Very Min Throttle
I have been fighting this surging issue for a while. I noticed when it starts to surge i could turn off the a/c and it would quit. It only surges when i am only at a very min throttle. Does this make sense? What can I do to fix it?
1999 f250 4x4 auto 256K miles....
Ford F-150 - 1997-2003 :: Clunks Around At Low Throttle Especially Around 50 - 55 MPH
I am having a strange issue with the transmission in my 02 F150 with the 5.4, but it only happens when it`s cold outside and the truck is warm, typically after shutting off the truck and starting it back up (like if I stop at the store for something).
Basically, it clunks around at low throttle, especially around 50-55 MPH. Sometimes, it will act strange as I roll to a start, but typically it`s fine up until there. If I hit the gas it shifts just fine, but it acts up at constant speed/throttle.
I am hoping that its a sensor or something that's confused vs. needing a rebuild or new torque converter.
Ford F-150 - 1997-2003 :: Throttle Body Cleaning
I need to clean my throttle body on my '97 F-150 and it has a label saying not to clean directly. Is it still safe to use TB cleaner and to go ahead and clean it? It needs done but how would I go about it.
View 6 RepliesFord F-150 - 1997-2003 :: 4x4 Making A Squealing Noise When Hit The Throttle
I have a 1997 f150 with the 4.6l triton that just started to make a squealing noise. I have replaced a couple of pulleys that were bad but that did not get rid of the problem. It only makes the noise when I give it some gas and it is coming from around the fan clutch area.
View 5 RepliesFord F-150 - 1997-2003 :: Throttle Body Whirring Noise
The Throttle Body on my 2001, 4.6 L is making a strange whirring noise, when you puy your hand on the intake pipe, you can feel a slight vibration. The Truck idles and runs okay, with no codes. Giving it a little gas and the noise goes away. The last thing I did was clean the IAC with Gum Out Carb cleaner, the second or third time I've done this over many years, with no problems. I'm a little perplexed at the cause.
View 6 RepliesFord F-150 - 1997-2003 :: 2001 - Miss At Low RPM - Light Throttle
My 01 Super Crew 5.4l is missing at light throttle. Cruise control on flat hwy, no miss, slight incline, starts missing. Put my foot into it and either it stops missing or it covers it up where I don't notice it. No codes set at this point. It's got about 135k on it and for all I know it may have had the original plugs in it so I figured I'd change them. Changed the plugs, still misses. Shortly a code set, something about the EGR sensor (it's got another name but I forget what it is at 1:30am). I found I had broken a hose while changing plugs, fixed it, no more code, still misses.
When I sent my GF up to get the non-existent codes checked the parts guy sold her some Lucas fuel system cleaner. I'm figuring a COP going out but the cleaner pretty much completely fixed the miss, till that tank of gas was gone. Few tanks later and it's back again as bad as ever. I bought some seafoam as I've had good luck with that in the past. It almost completely fixes the miss but I get a rare 'bump'. What do I need to look at next? Can it be the fuel filter? I'd think no because I'd figure it'd be even worse at greater throttle opening. Injector? How do I check them?
Ford F-150 - 1997-2003 :: Hesitation As The Throttle Is Pressed During Driving
2003 Ford F150 XLT - Truck hesitates (or bucks) as the throttle is pressed. Not from a stop though. It starts / runs fine, but no matter how how fast, what gear, hot or cold, it feels like the fuel cuts out for 1/2 second. Also it is not a specific point in the throttle motion. It does it when it is halfway, 3/4 or fully depressed, but is not consistent. It does happen more frequently now than two weeks ago. I am not getting a check engine light.
4.6L V8, 5 Speed Manual 4x4, 74000 mi
Ford F-150 - 1997-2003 :: 2002 - Throttle Feathering While Cruising
I just had an exhaust manifold replaced on my F-150. It has the small 8 cyl.. While the manifold was leaking, the truck of course ran like crap.....spitting, sputtering, barfing, etc.
Now that the manifold work has been done, the truck runs pretty well, except for some intermittent increase in throttle (not by me) when cruising at highway speeds. This is comparable to the "feathering" of the throttle that you would do when checking for engine noises.
Hard to explain without feeling dopey, but kind of a mild ruuum, ruuum, ruuum out of nowhere when I'm cruising along. I drive a 5 hr. trip every weekend, and it will do this about every 10-20 minutes.