I have a 96 Jeep Grand Cherokee when I Drive it and put it to the floor it starts like wrapping itself out like bogging down I don't know what it is need help it happens at 3000 rpm but at idle runs fine
Okay,. here I am,,,,
Stupid question - perhaps too simple also, but -- did you check the air filter that there are no clogs in the passage way as well?
What is the condition of the fuel in your tank? Is it old, do you run the tank low? The fuel quality these days sucks. You may have water in the tank? rubbing alcohol would also dry of the tank for a cheap fix,. similar content in the $2.99 bottle anyway,. lucas is the best, but it's $6/ 3 oz. (the larger the bottle the less the per unit cost - can/ should be used in all the small engine gas cans too).
I know what this is, but can't put my finger on it,. you could call your local library to check the availability of the Haynes or chiltons repair manual - if not there, they can tell you which branch or have it shipped in - it's a typical week or two that you may check it out for FREE! Otherwise it's $20 bucks at the auto parts store -- Then again you might even find one which is open already in the parts store -- they will have the trouble shooting in it which will show you what's up. Either way -- CALL ahead to check availability!
I hope this helps!
Best regards
Ck
Testimonial: "well itried evrything from rotor to gas filter minus plug and wires. then it came to me it wants to run but something stoppin it, so i disconnected the the catytalatic converter. and it started right up. so store that one away. thanks carl"
If you go to Autozone, Oreilys or Advance, they can scan your vehicle for free. They usually do not want to hook up a scanner if the "check engine " light is not on. Some systems will accumulate intermittent codes until enough have registered to set a code.
There are a few things you can try. It would be helpful to whoever works on the vehicle to know if the 3000RPM limit is present in just the final top gear or if the next lower gear can exceed 3000RPM. Sometimes there are built-in limits for a limp home mode. If you can get more RPM in the next lower gear, then fuel pressure should not be the problem.
The Vacuum system is not on the "Check light" system. A loose vacuum hose or bad intake gasket can cause your problem. Use an old spray bottle filled with plain water and go around the gaskets and vacuum lines when the engine is running. If the RPM changes, you have found your leak.
There should be a TPS on most vehicles. Ask the parts store if you have one. This device is a resistor that works with the gas pedal. It should be on the opposite side of the accelerator cable hookup. When the butterfly valve moves in the Airhorn, the matching pieces operate the TPS or throttle position sensor.
If you unplug the wiring connector and put an ohmmeter on the part(TPS), the ohms will register as you open the throttle. You may have a partially burned out part because the ohms should change all the way through the rotation of the butterfly flap. If you hit a limit before the full rotation, the part is bad and it needs to work to get to the higher RPM.
Check your Vacuum first.
Most of the time the coil will either cause missing or be out completely. If you were missing, then the unburned fuel would flow through the exhaust and trip the O2 sensors. At most, this would cause the O2 to lean out the engine and that would Code another defect. Having a limit on high RPM usually is something else. Take your coil to have it checked as they can successfully bench check it if they have the tester.
I was reading the Blogs and there was a problem with the Air/mass metering. If this part is bad, it sends the wrong info to the engine and limits RPM. I would think a Free scan would show this defect. If you sprayed anything but Electrical cleaner on this part, it will be damaged by choke cleaner or brake cleaner.
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thanks for the adv., i had already tried all the vacuums, sorry i didn't add that. since then i went to start and it will not. i checked for and none. so check fire at coil, red spark. took to autoz. check it had very min. so got and going to change. also cap and rotor. can coil go bad and cause those signs?
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