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  #16  
Old October 23rd, 2019, 19:25
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Re: TPS ohm issue, renix 1990 i6 automatic.

Well, that's good news, and a great idea on your part.
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  #17  
Old October 23rd, 2019, 20:26
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Re: TPS ohm issue, renix 1990 i6 automatic.

Now on to why my exhaust smells like crap. Thinking my newish CAT is blown. Last year I was pumping rich so much I was clogging it and getting black smoke...
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  #18  
Old October 23rd, 2019, 20:42
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Re: TPS ohm issue, renix 1990 i6 automatic.

Literally smells like crap?

Or smells rich and burns your eyes?
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  #19  
Old October 23rd, 2019, 21:21
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Re: TPS ohm issue, renix 1990 i6 automatic.

Smells super rich and is really strong, when I turn off the engine smells like strong burnt fuel. I thinks its the O2 sensor again. I keep burning these things out. But I think it blew out the cat because there was a time where it actually started causing my jeep to stall out and send black smoke out from right under the passenger side where the CAT is..
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  #20  
Old October 23rd, 2019, 21:33
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Re: TPS ohm issue, renix 1990 i6 automatic.

Quote:
Originally Posted by 90XJ_Seth View Post
Smells super rich and is really strong, when I turn off the engine smells like strong burnt fuel. I thinks its the O2 sensor again. I keep burning these things out. But I think it blew out the cat because there was a time where it actually started causing my jeep to stall out and send black smoke out from right under the passenger side where the CAT is..
A bad cat won't cause it to smell rich. Mine with NO cats don't smell rich.

Keep in mind the MAP sensor uses the same ground as the TPS. MAP is the most influential sensor that affects richness. How's the tube MAP to throttle body? How's it's ground?

I have a fix for the MAP hose.
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  #21  
Old October 23rd, 2019, 21:48
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Re: TPS ohm issue, renix 1990 i6 automatic.

I don't know how to TAP a hole in the TB but that's a brilliant fix. I used gray permatex to seal the hard line hose to the TB connection. I then used a rubber vacuum line for the MAP to the hard line hose and sealed the rubber vacuum line to the hard line with gray permatex too. I verified there's no goop inside. Should I run a better ground for the MAP sensor then too?
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  #22  
Old October 23rd, 2019, 21:51
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Re: TPS ohm issue, renix 1990 i6 automatic.

I did not seal the connection to the TB just the hard line to the rubber boots that go into the TB.
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  #23  
Old October 23rd, 2019, 21:52
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Re: TPS ohm issue, renix 1990 i6 automatic.

I'm very concerned there is an issue with that line.

At idle, spray some carb cleaner all around it slowly. If the cleaner hits a vacuum leak, you'll know!!

Test the ohms reading on the ground wire at the MAP for fun. And yes, you could ground each and every one of those sensors on that ground circuit separately.
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  #24  
Old October 23rd, 2019, 21:53
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Re: TPS ohm issue, renix 1990 i6 automatic.

That grounding definitely sucks for sure. I will find some carb cleaner to check. Now to learn how to tap a screw hole...
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  #25  
Old October 23rd, 2019, 21:54
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Re: TPS ohm issue, renix 1990 i6 automatic.

Quote:
Originally Posted by 90XJ_Seth View Post
I did not seal the connection to the TB just the hard line to the rubber boots that go into the TB.
If the rubber plug got clogged with goop, the MAP sensor thinks the engine vacuum is low and tells the ECU that the engine is under a load, and the ECU holds the injectors open longer....makes for a rich mixture.
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  #26  
Old October 23rd, 2019, 21:54
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Re: TPS ohm issue, renix 1990 i6 automatic.

Report back tomorrow if I can. Thanks!
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  #27  
Old October 23rd, 2019, 21:55
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Re: TPS ohm issue, renix 1990 i6 automatic.

Quote:
Originally Posted by cruiser54 View Post
If the rubber plug got clogged with goop, the MAP sensor thinks the engine vacuum is low and tells the ECU that the engine is under a load, and the ECU holds the injectors open longer....makes for a rich mixture.
That I did not know.
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  #28  
Old October 23rd, 2019, 21:55
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Re: TPS ohm issue, renix 1990 i6 automatic.

Quote:
Originally Posted by 90XJ_Seth View Post
That grounding definitely sucks for sure. I will find some carb cleaner to check. Now to learn how to tap a screw hole...
Easy. Go slow. Probably a youtube video on it.
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  #29  
Old October 23rd, 2019, 22:25
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Re: TPS ohm issue, renix 1990 i6 automatic.

Just checked the MAP ground. 2.4 OHMS, Grounded to the chassis ground right 3 inches from it at .5 OHMS. Sprayed electronic cleaner at the MAP hose because I didn't have CARB cleaner. Made no difference. But I am suspect of that still.
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  #30  
Old October 23rd, 2019, 22:29
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Re: TPS ohm issue, renix 1990 i6 automatic.

This is called progress. Check ohms at the CTS, IAT...

Imagine if every sensor in the circuit was giving an inaccurate reading due to bad grounds.......
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