At random times, I've noticed that when I start my car and try to accelerate, it will not accelerate, but once I either take my foot off the gas and try again, or just keep pushing, it'll kick in and accelerate fine. It was really jumpy when I would stop at stoplights and just let my foot off the gas, but we've changed sparkplugs and added fuel injector cleaner and it seemed to have fixed the problem, but now, it's randomly not accelerating when I start the car.
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It sounds to me like a problem with cruise control? Turn it off and/or unhook it, drive it a bit and see if accelerating problem goes away? If it does, you need to troubleshoot the cruise control. Any applicable trouble codes?
That sounds dangerous to me, I'd disable the cruise control till you find the problem.
I don't know what testing you have done?
The heat gauge is tweeking because the sealer is coating the sensor, that stuff is terrible, it cloggs your heater and rad. it could be the trottle positon sensor or the mass air flow sensor. i would start by changing the fuel filter, only $20 and this is probably your problem. not getting enough gas becauser its clogged and causing it to dye. accelerating because sometimes the fuel pump gets more pressure to push more gas through the clogged filter. I would bet $100 your problems will be gone after changing the filter, as for the cam sensor, that was a big waste of money. change the fuel filter and make sure the air filter looks good.
The very first thing you need to do here is have the engine control module scanned for fault codes with an OBD2 fault code reader or scan tool. Once you have the fault codes then you can diagnose the cause by the fault code or codes received.
I've had this happen more than once and it always turned out the the timing belt was off by one tooth. I bought a used car in the 80s that had had its belt improperly replaced, told the dealer that the car had a problem, wouldn't tell them what was wrong and after ~ 20 minutes, they dropped the price to one I had offered, saving 34% off their price.I brought a couple of wrenches with me when I picked it up and drove two blocks and corrected the belt in <10 minutes.I drove it for 10 years and 150K miles before selling it. Have the belt checked again.
4.2 ltr missing. 2000 truck, f150. Changed plugs, wires. Ran great for 2 weeks. Started again. Changed coils. Got worse. Changed fuel filter, did nothing. Added injector cleaner and fuel cleaner, nothing. Checked EGR, o.k. It is getting worse. Had new gas about the time it all started.
First (I"M starting to sound like a broken record on this) check the ground connections at both ends of the cable.(smaller body grounds as well) Make sure they are clean where they make contact with block and terminal post (not just on the outside.) Make sure hot wire is also clean and fastened correctly. Right now, we are trying to find out what it's not., Then, you can get to what it is.Often small stupid things can look like other larger problems.