Ford F-150 - 1997-2003 :: 1999 - Low Idle With No Codes?
Mar 28, 2009
I have a 1977 f250 460 with c6. As far as I now everything is stock on the motor. The carb is a motorcraft but I cant see what model it is, there is a ID tag that I need to get the numbers off of so I can see what I have.
I don't know much about carbs so I'm trying to learn as I go, but what has me wondering about the secondaries is going up inclines. We have a canyon that is a decent grade and long, I was towing a empty flatbed trailer and with my foot all the way down could never get it above 40 mph it just felt like that was it. I have been out playing with no trailer and it feels like I can get them to open up when it down shifts, but cruising along at 55 and stomp it nothing.
I am worried about pulling our camp trailer with it and that is the main reason I got the truck with a 460. What to check?
View 7 Replies
Advertisement
The truck ran fine this morning and this afternoon I had trouble with the truck running at idle.
The idle is at about 450RPM in park. Runs smooth with no miss but if you bring the idle up and then let off quickly it stalls. Can stall while trying to idle at warm up also. Sometimes it will stall at a light but I think it is related to taking my foot off the pedal quickly.
There is no check engine light on and there are no codes. I have 138K on the engine now. Both air & fuel filter were replaced about a month ago as well as the PCV valve.
View 6 Replies
My buds 2003 4.6 liter stalls every time he takes his foot off the pedal. Runs fine otherwise, no roughness or anything, you just have to keep your foot on the thing to keep it from dying out.
We checked for codes and found none. I checked vacuum connections and they looked OK.
Is there an easy way to test the IAC or should we just throw a new one in and cross our fingers? If we do change it out, does the truck need to be driven around a bit for the computer to re-learn anything?
View 5 Replies
I will try to keep this short. Picked up a 2000 f-150 4.2 for my nephews first truck last night. Bought it blind against my better judgement, but the price was right. Got it home, odometer didn't work, fixed the solder joint and was happy it only had 132k on it. Heater core was plugged solid. Got it flushed and at least now its has luke warm heat until I have time for a full coolant flush and new core.
Next on my list is the high idle and engine lights. Its idles around 1300-1700, cold or hot sometimes it drops down. I only have a cheap scanner, but I have 2 codes. PO171 and PO174. Where should I start with diagnosing this? I would assume vacuum leak. Any common spots to check on these?
View 14 Replies
So I have a 1997 ford f150 v8 4.6 2w... I got codes p0171 and 174 my truck seems fine till the idle drops, it's weird when I have it on park it's fine if I turn the wheel left the idle drops when the ac turns on the idle drops and it's wasting crazy gas. Where should I start first in finding this problem?
View 12 Replies
I have a 2000 F150 4.2L and I have 2 codes PO304 & PO174 so far I have changed my plugs & wires,fuel filter,mass air flow sensor, and coil pack...it is still running rough under a load and a little rough on idle..
View 9 Replies
so i bought this truck about 3 months ago and it was running real bad when i got it, I went ahead and changed the lower and upper intake gaskets, cleaned throttle body, egr ports on lower and upper intake, did timing chain cover gaskets and 3 bad injectors i found while doing gaskets, truck ran better but still black smoking(running rich) and getting 8 mpg. So I changed fan clutch,fuel pump fuel filter,airfilter,MAF sensor(old one was pulling 14.4 volt), DPFE sensor and all 4 oxygen sensors(old ones carboned up and real sooty).
I've checked my egr valve while idling and when it opens the engine just about stalls, truck seems to be running better but CEL light came on again and is throwing these CODES:
P0453 (evap emission ctrl sys pressure sensor high input),
P0141,
P0153,
P0135(oxy sensors),
P0401exhaust gas recirculation flow insuff detected,
P0460fuel tank level indicator circuit error.
And I believe I've told everything i know ...
View 10 Replies
2003 f150 5.4, 4x4 ... Truck is shaking pretty bad, idle bounces between 500 and 750, and its throwing p0172 (rich on bank 1), P0174 (lean on bank 2), and it looks like a misfire on cylinder 8 judging by that power graphy thingy. I'm going to check for a vacuum leak tomorrow on the PCV.
View 2 Replies
PCV hose/grommet was rotted out with 1 inch hole but supposedly he spent a long time tracking down the problem. It was located way in the back middle (like underneath the wiper blades area).
2002 F150 XLT Crew Cab 4.6L 4x4 170K
What known issues would do this but not turn engine light on? Motor sounds excellent and runs excellent. Previously it was missing and engine code come up as random misfire, misfire cylinder #2 and #4. I replaced the coil packs on 2 and 4 and erased the code and there was a 1000% difference. Ran excellent (still does).
However, a week later I noticed a subtle shake in the motor, and at idle it would stay at 1...maybe slowly chirp just above 1, and then sputter a little down to 1/2 rpm. It will do this and stay running, but sometimes it will cut off.
What are the possible things that you think it could be considering no check engine codes? (Bad motor?)
View 4 Replies
My truck started to idle very rough. I pulled the codes and I got po308 and po316. First I changed plug #8, the electrode was nearly gone. I have never seen a plug in worse shape. Replaced that plug and fired it up, it still idled rough and threw the same codes. Next I moved the #8 coil pack to the #1 location and vice-versa, still the rough idle and same codes. Then I moved the #8 injector to the #1 location same results. Finally I tested compression in the #8 cylinder and it read 32psi ( not good) everything else read 150 to 160 psi. Squirted some oil into #8 and no difference in compression.The truck is a 2002 with 184,000 miles, it burns a quart of oil every couple weeks but still is in perfect shape. Should I bite the bullet and invest in a remanufactured engine for 2500.00? I put one in my 97 f 150 a few years ago with no problems.
View 5 Replies
I have a 1999 f150 4.2l that the abs light comes on going slow, under 25mph. Replaced speed sensor still there. Hook up my scan tool and get connection error. Only in abs mode. Check fuses and power point's. Scanner works on a buick fine.
View 7 Replies
2003 f350 2wd 5.4 auto cab and chassis with 40 gal rear tank replaced fuel pump/fuel filter/spark plugs/IAC no codes
View 7 Replies
I've been having this problem since I've gotten the truck about year ago. it has very high long-term fuel trims and it seems no matter what I do I cannot get them to go down my fuel trims at idle are 39 Bank1 and 33 bank2 they go down to around 12>7 while driving what could this mean. And even weirder occasionally I get Bank 1 or bank 2 too lean codes at idle when cold starting???? 1997 Ford F150 4.6 ......
View 7 Replies
Ok, so the OD light sometimes blinked and sometimes not. I drive for a week. About 500-600 mi. Today the tranny starts acting up. Up until today NO probs at all. I bought a code scanner. Codes are P0781, and P0743. I also bought new filter and fluid while there. I read here that it could be a shift spring that is easily accessed when doing the filter change. I guess I should get that and do it,and the filter and see what happens next?
View 4 Replies
I have a 99 f150 with the 4.2l v6 with a 5 speed 173000 miles. I picked it up not to long ago. When I first got it it had both the P0171 & P0174 lean on bank 1&2 it was also siting for a while. I replaced the fuel filter which was filled with black fuel, also changed the PCV valve, cleaned the MAF sensor, and changed the oil. I cleared the code, drove it for a little bit and the light came back on after 20 miles.
I then proceeded to replace the upper and lower intake manifold gaskets. Upon doing that i noticed that i was missing one of the linkages for the IMRC. I went to the junkyard and pulled off another linkage rod off the same motor. ordered new plastic clips, put the IMRC on cleaned everything up and began putting it back together. I also cleaned the Injectors while i had them out as well and put in new spark plugs and wires.
Put everything back together. code was cleared since the battery was disconnected. drove it and then the engine light came back on again. this time it was only the p0174. so i then both the upstream and downstream O2 sensors on bank 2, reset the code and it came back on again. I'm lost.
View 2 Replies
Well, long story is that I starting have problems with my 2000 F350 Dually 7.3 PSD about 6 months ago ( ~10K miles ago ). I have sunk almost 5K$ in mechanics and the problem is still present.
By troubleshoot, I do not mean try this, try this, as that has been what is happening. I mean making test measurements and diagnostics. I am fairly mechanically inclined, but I am no mechanic. Looking for primers on how the 7.3 PSD works.
Symptoms: After the truck sits 12 to 14 hours, it starts and idles fine ( ~ 700 RPM on the 'Dash Tach' ) just as it has always done. During the first 5 miles of driving it, the SES light comes on and it sputters, stalls, and vibrates as if a couple of the injectors are not firing. It then clears up and the SES light goes out, except that it idles at about 1200 RPM ( 'Dash Tach' ).
It runs fine like this the rest of the day, If I shut it down it will start right up and run fine, but it has the high idles. Only if it is shut down longer than 12 to 16 hours do the symptoms, other than the high idle, reappear. The high idle is constant. Also mpg have fallen ( 13 opposed to 16 ).
It does not seem to be related to ambient temperature, or the amount of warm-up idle. I have idled it for three hours on startup and it is fine, until I drive the first 5 miles or so.
Now, I have had three mechanics work on it and they have replaced: the ICP sensor ( 3 times ), the Fuel filter ( twice ), drained, flushed and refilled the HPOP, replaced both sides of the valve cover wiring harness, put in a new IDM, fuel heater, CPS sensor ( 3 times ), fuel pump in fuel tank, EBPV ( not sure what this is ), and the last straw was saying the injectors needed to be replaced ( or at least the O-rings, but while we are in there you might as well ... ).
I bought a cheap code reader and it says: P1316 & P1211. I believe these are the same codes since day 1.
View 5 Replies
Strange ticking only at idle. not sure if its a lifter or how to diagnose? 1999-4.6-2wd....
View 5 Replies
My dad has passed his 99 f 150 with 130,000 miles to me. It is a 2 wheel drive, extended cab automatic equipped with the 4.6. Recently, the blend door failed and as a temporary measure I installed a ball valve in the heater core supply hose. The ac now blows ice cold.
On two occasions since the installation of the ball valve, the truck has stalled at idle when in park and would not start, although it turned over fine, until 30 to 45 minutes elapsed. On both occasions it was a hot day. The check engine light is not on and no codes are stored.
View 7 Replies
My 1999 F-150 came with a horrible performance muffler on it. It is pretty quiet at idle, but off idle it is just too loud.
It is one of those weld-in, cylindrical, red ones. I want OEM sound or quieter, but quality.
View 7 Replies
Started my truck yesterday and drove about 1/4 of mile and all of a sudden I lost all power but was lucky enough to creep back home. Had a friend put it on a scanner and it spit out P1280 and P1316 codes. My truck will start and idle rough but has no throttle response and no power. I changed out the CPS and ICP and the problem still exists. I got an infrared thermometer and checked the heat coming off each manifold and the driver side was reading about 200 while the passenger side was reading about 75 while at idle. Pulled valve pan cover off the passenger side to check and see if the harness came loose and everything looked fine. So my question is do you think this could lead to a bad IDM?
View 9 Replies
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...
View 1 Replies
