Mild acceleration forced the car to downshift then it would take off normal. He checked cam sensor (it was fine), checked timing (which read fine), tried to pull codes (none), checked fuel pressure (starts with correct pressure then immediately falls off), he said my vacuum reading was a little low (17 inches I think he said), and he said he quickly tried to check for extra play in my timing chain and there didn't seem to be a problem. 2003 Ford Mustang GT 4.6L with hard start and poor idle (only when warm) problem. JavaScript is disabled. Updated May 02, 2018 You know how frustrating it can be when … try this first. I have been having trouble with my 95 Mustang. Steve S, Ford Technician. Ford Mechanic: Steve S, Ford Technician replied 11 years ago. SPONSORED LINKS. Go. I have used plenty of cheap gas in the past (college student). Slight hesitation when I started from a stop. I'm the second owner, it currently has 145k miles and i've had it for a year, it had 121k when I got it. Make sure you get it done from the dealer. V6 Mustangs. (It did this on the old exhaust too.) I recently replaced both VVT solenoids in my 2004 FX4 Supercrew and what a difference it made. I could not believe the difference it made in acceleration response time. Mustang Forums. Did you check to see if the plugs are gapped correctly and no cracks? Registering is free and easy! When I got it, I changed the spark plugs to NGK coppers. Idle Air Control (IAC) valve was the problem and is a very common cause for idling and starting issues on these cars from 1999 through 2004. It's loudest in the lower gears but still noticable while I accelerate. Jun 16, 2011 #1 ok guys it started last night while i was on my way to work. It occurs when just cruising at a constant speed (most noticeable when around town), as well as light acceleration. I also fixed a bad gap on my spark plugs (re-gapped) about the same time I replaced the grommet. Show More. I'm thinking it IS the spark plugs now. Have you performed a fuel injection flush? This trip it didn't buck and kick like it was. Eleanor's Girl Member. Thread starter dynasty_365; Start date Jun 16, 2011; Forums. the electrical signal gets so degraded that it sputters while accelerating. 1 of 2 Go to page. Vehicle hesitates when accelerating from a dead stop. We are the oldest and largest V6 Mustang forum on the internet. For a better experience, please enable JavaScript in your browser before proceeding. The bottled stuff is crap. No backfiring. there are no engine codes and it idles just fine. Could clogged fuel injectors cause that much of a problem? Category: Ford. The two cheapest things you can do to your car to insure it runs right is put in good oil and gas. Jan 13, 2010 136 0 16. History. Matthew Wright has been a freelance writer and editor for over 10 years and an automotive repair professional for three decades specializing in European vintage vehicles. Hesitation while accelerating. Car is hesitating during acceleration - 2004 Ford Mustang V6. Took complete car of it. Check the coil pack with a multimeter. The loss of power seemed to grow worse every week. i paid 74 dollars at oreilies and got a new one and it fixed the problem. I checked all of the vacuum lines and that helped for a day but as I started to used my A/C more it got worse almost as if the hesitation occurs when the A/C flips on. After checking for vacuum leaks, bad spark plugs, changed fuel filter, etc, I took it to a mechanic. If you have any questions about your V6 Mustang or just want to connect with other V6 Mustang owners around the world, you have found the best place on the internet to do that. Sep 30, 2004 #1 I have been having trouble with my 95 Mustang. 1996 - 2004 SN95 Mustang -General/Talk- . Other causes may be bad or worn out components in the ignition secondary system, causing the engine to accelerate poorly and even stall. Has the fuel filter been changed recently? I replaced this (like 8 bucks i think) and everything else was back to normal after a few days. Another was to replace the intake manifold gasket. When I turn my car on it stays above 1000 RPMS and any time I press down on the clutch to switch gears, the RPMS rev up to around 3000 RPMS and when I'm in neutral just coasting the RPMS rev up to a little above 3000 rpms. I have recently had problems with my RPMS. Next Last. Clogged fuel injectors could be your problem then. Then I had a misfire. V6 Tech. Well I'll give you three guesses to what it was.. You must log in or register to reply here. Driving I can not give it more than 1/2 throttle without it … For a better experience, please enable JavaScript in your browser before proceeding. Hesitation Definition - An engine hesitation is an interruption of continuous power during acceleration. You are using an out of date browser. hesitation when accelerating. My Mustang is a 3.8L V6 2000 convertible. Hope to see you on the forums soon! If you have any questions about your V6 Mustang or just want to connect with other V6 Mustang owners around the world, you have found the best place on the internet to do that. I had the exact symptoms you described: running rich, hesitation during acceleration, sometimes it would pop through the intake, CEL was on too. I have severe hesitation when begin to accelerate up until around 2500 rpm (sometimes a popping noise, backfiring, up around the air intake), a loss of power, running very … It may not display this or other websites correctly. Am I in the right path? Thread starter mjh; Start date Sep 30, 2004; M. mjh New Member. I have a 3.9L 2004 V6, automatic. Costs $100.00. It may not display this or other websites correctly. It has been getting progressively worse over time. Get the fuel injector flush, i bet you that's your problem. It is stock except for a CAI I installed. But it s still not right. Hm I am leaning more and more heavily on the coil pack. check your spark plug wires, i had a hesitation problem during acceleration, i've changed and cleaned almost everything, and same problem. Hope to see you on the forums soon! I would try replacing these components if you haven't already. The engine hesitation on your Dodge may be created by problems in one or more components. i just go done fixing the exact thing you are dealing with. I have severe hesitation when begin to accelerate up until around 2500 rpm (sometimes a popping noise, backfiring, up around the air intake), a loss of power, running very rich. our editorial process. Posts: 40 From: Houston, Tx , US Registered: Apr 2004: posted 01-12-2005 03:09 PM The fuel injection flush really does work....i think that's the problem or a major part of it. Car has done 79K miles.. 1; 2; Next. Finally, there's a bit of hesitation when accelerating. 2005 - 2014 S-197 Mustang -General/Talk- . Is this a throttle body issue, or possibly an MAF issue? Clean the MAF. If I rev the engine while idling, the knocking noise is very slight but still annoyingly noticable. Think about it...its only about a dollar more per fill up and your getting quality gas. Mustangs Tires & Wheels Motorcycles Used Cars SUVs Trucks ATVs & Off Road Public Transportation By. You are using an out of date browser. When a engine is hesitating it will cause the car to lunge or surge which will cause a sudden jerk as the car slows down. Engine hesitates when accelerating. When Im accelerating, the car begins to hesitate like its not getting gas, or a plug is loose, etc. It has been getting progressively worse over time. You can find this tutorial in Spanish here: Cómo Probar Fallas En Cilindro (4.0L V6 Ford) (at: autotecnico-online.com). What it turned out to be was a bad rubber grommet, the one around the filler neck that goes into the tank. no, I have not performed a fuel injection flush. Ask Your Own Ford Question. 2004 ford explorer 6 cul. Matthew Wright. I was told it might be caused by dirty tappets. Matthew Wright. Symptoms Of A Misfire Condition? 1994-2004 V6 Mustang Tech . Jump to Latest Follow 1 - 7 of 7 Posts. You may be due for new plugs, wires and an air filter. It has a really bad hesitation/stumble on acceleration. Category: Ford. 1999 f150 4.2 swap with 3.8 mustang block. before you go wasting money on other things such as flushing and stuff, pull your spark plugs and look for one that is really dark or lighter compared to the others and note where they come from. The basic symptom of a misfire is a light to severe rough idle that's felt when the engine is idling and a light to severe engine miss (hesitation) when the engine is under load (for example: your Ford vehicle moving from a stop).

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