Ford Fuel System :: 1988 - Fuel Pressure Drops Off Fairly Fast When Turned Off
Working on a 88 Ranger 2.9L 5-speed ext cab. The fuel pressure drops off fairly fast when turned off and I'm pretty sure that the check valve is bad. My question is, which pump has the check valve? It is a single mid tank set-up and has a pump in the tank and on the frame.
Pressure is fine while running. about 30psi @ idle and 40psi with no vacuum on the regulator. The pressure drops off within a couple of minutes which causes it to have to crank over for a bit to rebuild pressure and start.
It looks like the frame pump is readily available while the in take pump is special order. I just need to know which one has a check valve. I'm thinking the in tank pump, but I hate to waste money for the wrong pump.
Pressure drop rate
30 psi @ shut off
25 psi @ 1:05 min
20PSI @ 2:30 min
15psi @ 4:45 min
still dropping
Ford - Escort :: 1999 - No Start After Cranking / Plugs Wet With Fuel
99 escort 2.0 will not start. Has spark, fuel pressure, and 100 psi compression in each cylinder. After cranking for awhile , pull the plugs out and the plugs are wet with fuel. There is no answers anywhere on the net, but apparently there are others like this out there. No codes also.
View 1 RepliesFord Super Duty (1999-2016) :: Intermittent Crank - Fuel Pressure Is 40 With Key On / Falls To 35 On Startup
5.4L... So like many this winter, I had an intermittent crank no start issue. Thought it to be fuel related, based on low fuel pressure readings.
Now all new - battery, iac, cam sensor, fuel pump, fuel filter, fuel pressure regulator, air filter. Cleaned maf, temp sensor and throttle body. Engine starts, but I don't know if the problem is solved.
Fuel pressure is 40 with key on, falls to 35 on start-up, (which seems ok) but then after a few seconds, the pressure drops to 26 where it seems to want to stay. Hitting throttle hard makes it fall to about 20. I can't find any leaks in the fuel lines. Truck seems to run fine while driving.
To me, this doesn't seem good. Engine is not throwing any codes, but the ST fuel trim is running 0 to +3, and as high as +9 on occasion.
Does the consistent drop to 26 sound normal? Should I dig more into it, or just forget about it since truck seems to be running fine?
Accent LC (2000-05) :: Intermittent No Start After Filling Up / Cranking But Not Firing Up
I have a 2000 Hyundai Accent hatchback with 98k miles. About a month ago we were headed out of town and got gas about a mile away from the house. After filling up, the car wouldn't start. It would crank but not fire. Tried for about 15mins to no avail. Had it towed to local mechanic and it started right away. They kept it for the weekend and said they had no problems starting it, so without experiencing the problem they said they would just be throwing parts at it.
About 2 weeks after my wife drove to store and when she went to leave and same experience, but this time it started after trying for a couple of mins. Then just this Tuesday it wouldn't start in the morning. When it just cranks but not fire it shows a pending P0335 (crankshaft position sensor). So I ordered the part (won't arrive til Friday). When I got home I tried to start it as well to no avail; tried again Wednesday morning and evening, nothing. Then this morning (Thursday) it starts right up. Once its started it runs great. After recurrence of no start 2 weeks ago, I replaced spark plugs and spark plug wires.
Lexus LS 2007+ :: Starter Engages And Continues Cranking - Intermittent Start
For the past year I have had intermittent start issues with my LS that occur about 15 percent of the time. Ambient or engine temperature do not make a difference. Sometimes the starter engages but then disengages right away. I then need to depress the start button an additional time or two before it actually starts. At other times the starter engages and continues cranking while the engine sounds like it is trying to start (like it is just barely keeping ahead of the starter speed). That carries on for several seconds and then it starts. Nothing shows on diagnostics and the dealer says I am going to have to wait until there is a complete "no start" before they can trouble shoot. There was a similar issue with earlier 460 models but the Lexus service tech said that problem does not apply to the 2011's. It seems there is a lack of fuel delivery but from what point? And why only intermittent and momentary?
View 6 RepliesGolf/GTI VI :: 2011 - Intermittent Low Fuel Pressure
My 2011 tdi has 18k on it and yesterday the glow plug squiggle on the dask lit up and started flashing. At this point the car had no power so i pulled over and called vw. They were very prompt and got me towed to a dealer but the dealer was unable to find anything wrong even though the malfunction threw a code. I just finished a three hundred mile trip after leaving the dealership and the car worked perfect.
View 3 RepliesFord 6.0L Power Stroke Diesel :: No Start - Oil Pressure Registers On Dash After A Few Seconds Of Cranking
Dang, won't start again. My auction truck needed batteries, so I put mine in it and bought new ones for my work truck. Couple of days later, didn't start. Checked SG and I wasn't getting enough RPM. Jumped it and it fired right up. Replaced one of the new batteries and it's started fine the last few times, until just now, in the parking lot of the tire store.
The RPMs were weak - they'd go over 160 but then fall back to the 140s. I walked home and got my auction truck, jumped it, and it still doesn't start. Just spins. RPMs still fall back to the 140s after a few seconds of cranking, but they got as high as 220 so I don't think that is the problem. Fuel pump runs, the upper bowl is full, no bubbles. Oil pressure registers on the dash after a few seconds of cranking.
The last time, I wiggled some fuses and it started. Not this time. FICM at 48, ICP around 700 while cranking. Volts and IPV are good. FPW is 0, but I think that's right, until it cranks. Same with Sync - at 0 while cranking - does it ever go to 1 without starting?
It acts like it has in the past - cranking just fine but no start. And in the past, when it finally starts, it acts like nothing was ever wrong. I checked my IPR screen about a month ago after replacing it about 6 months ago when it didn't start. What am I missing? I'll go read some threads for clues.
Ford Super Duty (1999-2016) :: 2001 F250 V10 - Truck Will Not Start / No Fuel Pressure
I have a 2001 F-250 XLT 4x4 with V10. Truck will not start. No fuel pressure. My Haynes manual does not show ignition or fuel delivery wiring. I have found the relay box behind the radio/dash. I need a wiring diagram and info on which relay is the fuel pump relay. Want to know so I can jump relay to see if fuel pump is okay.
Truck had sat for a few weeks being ran very little, so had to jump start yesterday. Ran for about 15 min, the shut off, re-started and ran for 30 min. Truck sat for about 1.5 hours then would not start. Charged battery overnight and it is 100%.
Ford Super Duty (1999-2016) :: 2000 F250 V10 - Random No Fuel Pressure At Start Up
2000 f250 V10 ...
Problem: More often than not when the key is turned to run (?), prior to engaging the starter, the fuel pump does not turn on for its 5 seconds. I have installed a fuel pressure tester gauge to watch the fuel line pressure. It was a little shaky to diagnose because if the line had pressure/fuel from the previous run it will start and run a short time and then die from lack of fuel. Unless the fuel pump activates when the key is turned to run, prior to full start, then there will be no fuel coming from the pump. No start. If you work the key to run a few times until the pump engages its good to go. The truck has never died while driving, once it gets that initial pump activation it runs good until the next start up cycle. When the pump does work it builds up to good "book" pressure and holds it at 39 when the engine is shut off.
We have put off changing the fuel pump for obvious reasons but can not see how it could be the problem since it has never quit once after we get it started. Are we wrong? We know the fuel shut off is on as it will run. We have changed the key lock tumblers, the ignition switch and the fuel pump relay. (behind the radio). Next up is to re-seat all the fuses and relays in the main fuse panel box under the hood. I just read that today on FTE. Is there a test we can do or some engine codes we need to look for? This problem is getting old fast.
Passat (B5) :: Fuel Pump Has No Sound While Cranking, Car Won't Start
98 Passat 1.8T FWD
Car will not start. No sound from fuel pump while cranking. Pulled up the carpets and pulled the cover and connector from the fuel pump. Ive heard the relay is the common problem. I tried checking the voltages on the harness and we get 0 while cranking. Pulled the relay and we get a resistance from T pin to pin 86. I did notice a yellow color on the white connector on the fuel pump itself around the middle two contacts.
Ford Super Duty (1999-2016) :: Slow Cranking - Bad FICM Can Cause Intermittent Battery Light?
2006 F250, 6.0, AT, 59K. Week and a half ago, started cranking slow. I charged the batteries and checked with a professional load tester. Both batteries good, but voltage was fluctuating and tester said charging system needs service (no battery light). I swapped in a remand alternator as a new was not available that day. It lasted 6 days and this time the battery light was intermittent.
I checked voltage and again it was fluctuating. I swapped in another remand unit and 3 days later, same thing, intermittent battery light and fluctuating voltage. I'm installing a new, not remand unit tomorrow. However, could a bad FICM cause this problem? I noticed that the engine seems louder (not the exhaust note) at idle. This truck is clean and I have no corrosion issues. What is the right direction to test the FICM?
Ford Fuel System :: Fast Idle Speed Holds The Throttle At 1500 RPM On Cold Start
Carburetor: Autolite 4100
Fast Idle Speed: 1250 RPM
Curb Idle Speed: 600 RPM (At normal operating temperature)
When I cold start my truck, the fast idle speed holds the throttle at 1500 RPM. I will let it idle about 30 seconds or so, and then I will tap the gas to bring the idle down.
When I do this, the idle will immediately drop all the way down, and too low for a cold engine. The engine won't stall, but it will hover just below 500 RPM, which is a bit too low to idle smoothly.
But when the engine is at operating temperature, the idle speed is 600 RPM and the engine will happily idle smoothly.
Shouldn't there be an "in between" speed? When I tap the gas pedal at 1500 RPM to bring the idle down some, shouldn't the speed drop down a little lower, like 1000 RPM since the engine is still a bit cold?
If so, what do I need to adjust? The Autolite 4100 works PERFECTLY otherwise.
Lexus SC430 :: Check Fuel Pressure To Verify If Fuel Pump Is Functioning With Pressure Test Kit?
I need to check the fuel pressure to verify if my fuel pump is functioning. What is the procedure and PSI?
Assume that I open the valve on fuel rail with engine off, then connect pressure tester kit, put key in ignition to "on" position, then pump up to specified PSI???
Ford Super Duty (1999-2016) :: Low Fuel Pressure - Engine Power Reduced After Fuel Filter Change?
I had my fuel filters changed at the dealership today on my '15, and then I bought fuel and headed home (70 miles). About half way home I got a "Low Fuel Pressure" message and a little while after that "Reduced Engine Power" along with the check engine light.
I pulled over to see if they did something like leave the drain open, thinking it might be sucking air. Of course it was dark and I could not see anything. However I did hear a buzzing sound and could feel a vibration when I touched the fuel line going into the top of engine filter.
While it is possible I got bad fuel, I suspect they did something wrong installing the filters. Even after cycling the fuel pump multiple times they had a hard time getting it started afterwards; I think they finally disconnected the top fuel line to bleed the air out.
I continued home and made it, but not sure what to do now; its 70 miles back to the dealer.
What is the most likely problem? Improper fuel filter installation or bad fuel?
Should I pull the filters in the morning see if there is something obvious like an out-of-place gasket? If so, top or bottom filter?
Is this a tow truck affair or should I drive 70 miles back to the dealer?
What the heck is the buzzing sound?
Ford 7.3L Power Stroke (1999-2003) :: Fast Steady Leak From The Fuel Rail Outlet Fitting While Running
I had just replaced my the fuel pressure regulator in the fuel bowl because it appeared to be leaking from where the FPR is, now with the new FPR , it is no longer leaking from there but now leaking (fast steady leak while running) from the fuel rail outlet fitting... How do you replace these, why all of the sudden it started leaking there ???
View 9 Replies1999 S10 With 4.3L V6 TBI Will Not Cold Start And Idles Too Fast
I have a 1991 S10 with a 4.3L V6 TBI that recently began having trouble cold starting, meaning that at a mere 40F I can crank it over and over and it will not catch. If I plug the block heater in for at least an hour, it usually will start, but at a very low, very rough idle. Once it has about 30 seconds or so to warm up, it will then idle TOO FAST at 1500 rpm, and stay that way for the first few miles of driving, which makes it rather awkward to drive, being a 5-speed. Once its been driven awhile and fully warmed up, it runs normally. (I'm running a 180F t-stat.)
The IAC valve, block temp sensor, and TPS sensor, were all replaced last year, so I'd find it hard to believe that one of those could be the problem. I put Heet treatment (red bottle) in the fuel, changed fuel filter and reset the computer. (Although it's never given a trouble code.) The problem is still there.
My local mechanic says replace the ECM, but he hasn't actually diagnosed that as the problem, so I think he may just be taking a wild guess. (He hates OBD1 systems with a passion!).
Prius (Gen 3) Fuel :: How Fast To Accelerate For Maximizing Fuel Economy
I am wondering about how fast to accelerate for maximizing fuel economy. I understand with the P&G approach that you don't want to get up to speed too slowly. The question is whether it really is more efficient to go ahead and get up to speed or stay within the ECO guidelines? In particular, I find that getting up to highway speed especially that it can take quite a while to get up to 70 mph without having it going into the power range. It seems like it is better to get up to speed and then back off to go to the high efficiency mode.
View 16 RepliesCelica :: 1991 - Intermittent Start As If The Fuel Pump Is Not Pumping
It acts like it is fuel poor, As if the fuel pump is not pumping. It spins fast on start. Then another try and it starts! No relationship to hot or cold. Fuel OK. Battery strong. I find no corrosion on fuel pump leads.
View 8 RepliesGolf IV R32 :: Won't Start - Fuel Pressure?
so my car doesnt want to start so i am going to check a few things.
first how do i check my fuel pressure or the location?