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| CEL even after cleaning MAP Sensor http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=41541 |
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| Author: | linewarbr [ Wed Mar 25, 2009 7:58 am ] |
| Post subject: | CEL even after cleaning MAP Sensor |
I pulled and cleaned my MAP sensor Saturday, but I'm still getting a Check Engine Light even after scanning and erasing the codes. It's giving me codes for Turbo underboost (directly related to MAP sensor) and insufficient EGR flow. Strangely enough too, when I cleared the codes (again) yesterday evening and drove it, it seemed smoother and more powerul. Then when I head to work this morning, the CEL comes on while waiting in the drive-thru and it seemed to run rougher the rest of the trip. I guess it's time for ORM and SEGR. . . |
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| Author: | gmctd [ Wed Mar 25, 2009 8:33 am ] |
| Post subject: | |
Check you air filter, and while yer in there, peer in at the MAF - if it's scuzzy, clean it - then check the Boost hoses - then, it's EGR and AFC valve time...................... |
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| Author: | linewarbr [ Wed Mar 25, 2009 8:59 am ] |
| Post subject: | |
Did both of those. Cleaned the K&N, pulled the top housing off the filter box and sprayed the MAF really thoroughly with MAF cleaner. Used chlorine-free brake parts cleaner on the MAP sensor and brushed it with a toothbrush. The only thing I didn't check was whether there may be an obstruction on my stock air box inlet. Can't figure out where exactly the opening on the thing is. Didn't check the boost hoses. And what's the AFC valve? |
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| Author: | 99GunMetalTJ [ Wed Mar 25, 2009 10:14 am ] |
| Post subject: | |
Had the same scenerio on ours. Put in a new MAP sensor instead of cleaning. Still had CEL and it ended up being the EGR. After driving for a while it went back off. I think the EGR is working intermitently. SEGR mod. is on the way. |
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| Author: | linewarbr [ Wed Mar 25, 2009 11:23 am ] |
| Post subject: | |
That's what I'm leaning towards, since I'm getting a code for "Insufficient EGR Flow". The "Turbo Underboost" code concerns me, though - cleaning the MAP sensor should have solved that, huh? I have to get it inspected in June, (won't pass with the CEL on) and I'm not sure I'm up to the technical challenge of the SEGR. Give me a wrench and I'll turn it all day long, but I am seriously not good with electrical/ electronic stuff. 
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| Author: | 99GunMetalTJ [ Wed Mar 25, 2009 11:33 am ] |
| Post subject: | |
linewarbr wrote: That's what I'm leaning towards, since I'm getting a code for "Insufficient EGR Flow". The "Turbo Underboost" code concerns me, though - cleaning the MAP sensor should have solved that, huh?
I have to get it inspected in June, (won't pass with the CEL on) and I'm not sure I'm up to the technical challenge of the SEGR. Give me a wrench and I'll turn it all day long, but I am seriously not good with electrical/ electronic stuff. I am in the same boat. I am mechanically skilled but keep the electricity away from me. I am having a coworker assemble the SEGR box and I'm hoping for the best in regards to splicing it into the Jeeps wiring harness. I am waiting on some instructions to be sent from another forum member. UFO, he is the guy who assembles the kit and he also has install instructions. |
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| Author: | UFO [ Wed Mar 25, 2009 12:33 pm ] |
| Post subject: | |
99GunMetalTJ wrote: linewarbr wrote: That's what I'm leaning towards, since I'm getting a code for "Insufficient EGR Flow". The "Turbo Underboost" code concerns me, though - cleaning the MAP sensor should have solved that, huh? I have to get it inspected in June, (won't pass with the CEL on) and I'm not sure I'm up to the technical challenge of the SEGR. Give me a wrench and I'll turn it all day long, but I am seriously not good with electrical/ electronic stuff. I am in the same boat. I am mechanically skilled but keep the electricity away from me. I am having a coworker assemble the SEGR box and I'm hoping for the best in regards to splicing it into the Jeeps wiring harness. I am waiting on some instructions to be sent from another forum member. UFO, he is the guy who assembles the kit and he also has install instructions. |
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| Author: | 99GunMetalTJ [ Wed Mar 25, 2009 12:39 pm ] |
| Post subject: | |
Got the e-mail. Thanks much. Just glancing at the instructions it doesn't look too bad. I'm sure I'll have more questions for you once I get to the install. Thanks again. |
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| Author: | toknight [ Wed Mar 25, 2009 5:45 pm ] |
| Post subject: | |
I have been trying the search function and am unable to find this. Is there a how to on the map sensor? I found the link in the stickes but it doesnt show where to find the map sensor only how to clean it once it is out. Thanks |
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| Author: | BVCRD [ Wed Mar 25, 2009 9:50 pm ] |
| Post subject: | |
toknight wrote: I have been trying the search function and am unable to find this. Is there a how to on the map sensor? I found the link in the stickes but it doesnt show where to find the map sensor only how to clean it once it is out. Thanks
It's in CRD tech by Oldnavy. |
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