Does Throttle Body Bypass cause "service engine soon" code?
Thread Starter
Advanced
Joined: Jul 2001
Posts: 72
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From: Kalamazoo, MI, USA
Does Throttle Body Bypass cause "service engine soon" code?
I did the throttle body coolant bypass yesterday.
When I turned on the car after the modification, the warning light came on to "service engine soon".
Has anyone else had this experience or is the engine code a coincidence that it occurred right after I bypassed the throttle body?
My car has 92K miles on it.
Thanks for your help
When I turned on the car after the modification, the warning light came on to "service engine soon".
Has anyone else had this experience or is the engine code a coincidence that it occurred right after I bypassed the throttle body?
My car has 92K miles on it.
Thanks for your help
Advanced
Joined: Aug 2000
Posts: 67
Likes: 0
From: Aberdeen, MD, USA
Re: Does Throttle Body Bypass cause "service engine soon" code? (Scott LeMuke)
No,
I bypasswd the throttle body a few weeks ago and no problems here. Did not feel any difference, but the car feels stonger at operating temps though.
I bypasswd the throttle body a few weeks ago and no problems here. Did not feel any difference, but the car feels stonger at operating temps though.
Burning Brakes
Joined: Aug 2000
Posts: 984
Likes: 1
From: Cincinnati OH
Re: Does Throttle Body Bypass cause "service engine soon" code? (Scott LeMuke)
Shouldn't trigger any codes. Most likely a connector near the tb got loose, the code should tell you which one.
Le Mans Master
Joined: Aug 2000
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From: Airport Cruise-in 1 Veteran Airport Cruise-in 2 Veteran
Cruise-In II Veteran
Re: Does Throttle Body Bypass cause "service engine soon" code? (Scott LeMuke)
I check my TPS everytime I have to move the bypass hose and it has changed before, not all the time but it has happened. If you can, check the TPS setting.
Race Director
Joined: Mar 1999
Posts: 16,950
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From: Stafford, Virginia Kittah, Kittah, Kittah...
Re: Does Throttle Body Bypass cause "service engine soon" code? (Scott LeMuke)
If you can pull the SES code out of the engine that should tell you exactly where to look... In that area you're working, the wiring harness goes to an engine temp sensor, IAT sensor, optispark electronics, MAF, and the TPS...
If you disturbed any of these connectors it could be the cause of the SES code... I know on my 96, the harness isn't as good as when the car was new and I'll occasionally get a MAF code...
If you disturbed any of these connectors it could be the cause of the SES code... I know on my 96, the harness isn't as good as when the car was new and I'll occasionally get a MAF code...
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: Does Throttle Body Bypass cause "service engine soon" code? (Scott LeMuke)
No codes should be thrown from this mod, I mean think about it, all you are doing is giving the coolant a differant path to follow.
You need to pull the code you got from the computer and let us know what it is. Maybe you didn't plug the TPS back in ??
Vic
You need to pull the code you got from the computer and let us know what it is. Maybe you didn't plug the TPS back in ??
Vic
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Pro
Joined: Dec 2000
Posts: 700
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From: Derby Kansas
Re: Does Throttle Body Bypass cause "service engine soon" code? (Scott LeMuke)
In addition to checking for sensor connectors, I'd also check your air intake bellows. Make sure that there's not a gap between it and the throttle body (sometimes the bellows can "fold under" at the bottom of the TB when you try to reinstall it). Also check to make sure tha bellows doesn't have a crack or tear.
If enough unmetered air enters anywhere between the MAF and Throttle Body, it can cause a code to set.
If enough unmetered air enters anywhere between the MAF and Throttle Body, it can cause a code to set.
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: Does Throttle Body Bypass cause "service engine soon" code?
Nope. should throw any codes.. unless when you did it you lost too much coolant and the "low coolant" light came on or something.
