98 Cherokee won’t start unless I press pedal
03-15-2022, 06:19 AM
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98 Cherokee won’t start unless I press pedal
Hey guys,so I remplace all 3 sensor in the throttle body, new battery,alternator,starter,coil,spark plugs, si the problem is: in the morning the car start right away, but if you turn it off and try to start it again the car do a long crank and won’t start unless you press the gas. Soooo please help
03-15-2022, 12:15 PM
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03-15-2022, 12:40 PM
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03-15-2022, 05:46 PM
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Where did the TPS come from? Is it an actual OEM Mopar TPS?
https://www.cherokeeforum.com/f2/jee...ot-gas-121135/
Another possibility is leaky injectors. If they drip after shutting the engine off, it can wash compression out of the cylinders. When you hit the throttle, one of 2 things might happen. 1) Adds just enough air to bring compression back up. 2) You hit the clear flood feature and it cuts the injectors off, further assisting with starting a flooded engine. This is usually on an old, worn out engine.
https://www.cherokeeforum.com/f2/jee...ot-gas-121135/
Another possibility is leaky injectors. If they drip after shutting the engine off, it can wash compression out of the cylinders. When you hit the throttle, one of 2 things might happen. 1) Adds just enough air to bring compression back up. 2) You hit the clear flood feature and it cuts the injectors off, further assisting with starting a flooded engine. This is usually on an old, worn out engine.
03-15-2022, 05:51 PM
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Where did the TPS come from? Is it an actual OEM Mopar TPS?
https://www.cherokeeforum.com/f2/jee...ot-gas-121135/
Another possibility is leaky injectors. If they drip after shutting the engine off, it can wash compression out of the cylinders. When you hit the throttle, one of 2 things might happen. 1) Adds just enough air to bring compression back up. 2) You hit the clear flood feature and it cuts the injectors off, further assisting with starting a flooded engine. This is usually on an old, worn out engine.
https://www.cherokeeforum.com/f2/jee...ot-gas-121135/
Another possibility is leaky injectors. If they drip after shutting the engine off, it can wash compression out of the cylinders. When you hit the throttle, one of 2 things might happen. 1) Adds just enough air to bring compression back up. 2) You hit the clear flood feature and it cuts the injectors off, further assisting with starting a flooded engine. This is usually on an old, worn out engine.
03-15-2022, 05:53 PM
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Where did the TPS come from? Is it an actual OEM Mopar TPS?
https://www.cherokeeforum.com/f2/jee...ot-gas-121135/
Another possibility is leaky injectors. If they drip after shutting the engine off, it can wash compression out of the cylinders. When you hit the throttle, one of 2 things might happen. 1) Adds just enough air to bring compression back up. 2) You hit the clear flood feature and it cuts the injectors off, further assisting with starting a flooded engine. This is usually on an old, worn out engine.
https://www.cherokeeforum.com/f2/jee...ot-gas-121135/
Another possibility is leaky injectors. If they drip after shutting the engine off, it can wash compression out of the cylinders. When you hit the throttle, one of 2 things might happen. 1) Adds just enough air to bring compression back up. 2) You hit the clear flood feature and it cuts the injectors off, further assisting with starting a flooded engine. This is usually on an old, worn out engine.
03-15-2022, 06:07 PM
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Rockauto.com has the Mopar sensor. I've been down that path with the TPS. Well, a similar path. My automatic transmission would shift all funky. I replaced the sensor with an aftermarket one and it got better. Then worse than before. I got a true Mopar TPS and it's not come back.
Testing the TPS is easy. I like using a scan tool, which is inexpensive. An ELM327 Bluetooth adapter from Amazon is like $10-15. Download Car Scanner and you can read the live data from every single sensor. It's a game changer. The other way is to use a multimeter. One wire with the key on will read 5v. One will read 0v. One will read between 0.5 and 4.5v. You have to leave the TPS plugged in and backprobe the pins on the connector. Or you can unplug it and read the ohms. I don't know the values off my head, but it should be a smooth sweep from one value to another.
Testing the TPS is easy. I like using a scan tool, which is inexpensive. An ELM327 Bluetooth adapter from Amazon is like $10-15. Download Car Scanner and you can read the live data from every single sensor. It's a game changer. The other way is to use a multimeter. One wire with the key on will read 5v. One will read 0v. One will read between 0.5 and 4.5v. You have to leave the TPS plugged in and backprobe the pins on the connector. Or you can unplug it and read the ohms. I don't know the values off my head, but it should be a smooth sweep from one value to another.
03-15-2022, 06:40 PM
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Rockauto.com has the Mopar sensor. I've been down that path with the TPS. Well, a similar path. My automatic transmission would shift all funky. I replaced the sensor with an aftermarket one and it got better. Then worse than before. I got a true Mopar TPS and it's not come back.
Testing the TPS is easy. I like using a scan tool, which is inexpensive. An ELM327 Bluetooth adapter from Amazon is like $10-15. Download Car Scanner and you can read the live data from every single sensor. It's a game changer. The other way is to use a multimeter. One wire with the key on will read 5v. One will read 0v. One will read between 0.5 and 4.5v. You have to leave the TPS plugged in and backprobe the pins on the connector. Or you can unplug it and read the ohms. I don't know the values off my head, but it should be a smooth sweep from one value to another.
Testing the TPS is easy. I like using a scan tool, which is inexpensive. An ELM327 Bluetooth adapter from Amazon is like $10-15. Download Car Scanner and you can read the live data from every single sensor. It's a game changer. The other way is to use a multimeter. One wire with the key on will read 5v. One will read 0v. One will read between 0.5 and 4.5v. You have to leave the TPS plugged in and backprobe the pins on the connector. Or you can unplug it and read the ohms. I don't know the values off my head, but it should be a smooth sweep from one value to another.
03-15-2022, 07:17 PM
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ok,when I had the problem before changing the old sensors, the car start after press the gas for a few weeks but after that,start but when i would put it in D, it would turn right back off as soon as I would take my food off of the brake. Crazy , and then I changed (tps,map and valve) and the problem went away until today
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