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Auto Repair Home>> Automotive Repair>> Car Troubleshooting

daleg
New User

Feb 11, 2017, 10:10 PM

Post #1 of 3 (1278 views)

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Hi, hoping someone might help. I had to replace an engine coolant sensor on my vehicle as the check engine light came on (guy at the autopart store said it was the sensor when he put it on the OBD reader). He advised I unhook the neg. cable of the battery before changing the sensor. I changed the sensor, no issues, hooked the battery back up. Lost a little anti-freeze, just a few ounces. Topped it off with fresh afterwards. Cranked the car...runs rough and stalls when I give it gas or put it in drive. It was occasionally hard to start before but ran ok, no overheating issues though...now...cant keep it running. Any ideas or advice would be helpful.

2001 Mitsubishi Montero Sport Limited 4x4
3.5l engine
230k miles

Tom Greenleaf
Ultimate Carjunky / Moderator
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Feb 12, 2017, 1:43 AM

Post #2 of 3 (1268 views)

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It was that CIRCUIT not necessarily the sensor but might have been.

Plenty of miles sport and by disconnecting battery without saving memory you've lost all adaptive memory plus you CEL for now which may come back with same code that suggested this?

You could clean out the throttle body real well and hope your idle is better or good again the quits stalling or if running well when you hold idle up and drive it enough it will eventually relearn or nothing was fixed and the circuit still has a problem.
Friendly advice is that parts stores that do code readings is nice but there to sell parts is the job not be a mechanic for you. That's your job or a shop's.

Now if you get a code reading again it would come up with only the hard codes that are still there as the ones in wait are erased but would do so. Write down the codes #s and decide/choose what to fix to correct it not just buy what something thinks it is,

T

Discretesignals
Ultimate Carjunky / Moderator
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Feb 12, 2017, 7:55 AM

Post #3 of 3 (1251 views)

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What was the trouble code number before you replaced the sensor?

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Feb 12, 2017, 7:56 AM)

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