Did I install my Throttle body incorrectly?

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Apr 16, 2013 | 08:03 PM

#16

Jake.

Junior Member

Joined: Apr 2013

Posts: 68

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From: Raleigh, NC

Year: 98

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by cruiser54

Return them for a refund.

Get NGKs.

This. I've ran regular 2 dollar v power ngk's in all my cars since I was old enough to drive. That's been 500+ hp v8's to 350hp 4 cylinders to my current xj.

Apr 16, 2013 | 08:04 PM

#17

Jakers

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Joined: Mar 2013

Posts: 404

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From: Gilbert, AZ

Year: 1990

Model: Cherokee

Engine: 4.0 L

Quote:

Originally Posted by Jake.

Def check the plugs. The only other thing I would think Is the map. Everything ran well before you pulled the tb? Well not well but actually ran

Ya everything was running before the throttle body clean. But I also repalced the spark wires/spark plugs/ distrib cap and rotor at the same time.

Apr 16, 2013 | 08:06 PM

#18

Jake.

Junior Member

Joined: Apr 2013

Posts: 68

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From: Raleigh, NC

Year: 98

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Jakers

Ya everything was running before the throttle body clean. But I also repalced the spark wires/spark plugs/ distrib cap and rotor at the same time.

And you're sure the firing order is correct and the rotor button was installed correctly?

Apr 16, 2013 | 08:11 PM

#19

cruiser54

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Joined: Aug 2011

Posts: 43,971

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From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by Jakers

Ya I ordered the plugs before researching that the older beasts like it simple. My understanding for the Platinum+4's is that they do not need to be gapped.

Well looks like I will be removing the plugs when I get home to investigate.

Now would they really be that gas fouled up if this was the first start up with them? I litteraly just replaced the plugs last night so the engine has only had the new plugs in and running for all of maybe 2 minutes... Today was the first start-up with them in.

I hope that phrase "older beasts like it simple" wasn't directed at me!! LOL.

New plugs CAN get gas fouled especially when the MAP has no vacuum to it. Pull one and have a look-see.

Apr 16, 2013 | 08:16 PM

#20

Jakers

Thread Starter

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Joined: Mar 2013

Posts: 404

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From: Gilbert, AZ

Year: 1990

Model: Cherokee

Engine: 4.0 L

Quote:

Originally Posted by Jake.

And you're sure the firing order is correct and the rotor button was installed correctly?

Ya firing order should be correct, I didn't change anything about it and when I was installing the new cap I made sure to do one plug at a time so it wouldn't get messed up. And yea pretty sure the rotor was installed correctly as well.

Gonna double check it all when I get off tonight.

Apr 16, 2013 | 08:17 PM

#21

Jakers

Thread Starter

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Joined: Mar 2013

Posts: 404

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From: Gilbert, AZ

Year: 1990

Model: Cherokee

Engine: 4.0 L

Quote:

Originally Posted by cruiser54

I hope that phrase "older beasts like it simple" wasn't directed at me!! LOL.

New plugs CAN get gas fouled especially when the MAP has no vacuum to it. Pull one and have a look-see.

Lol, it most definitly was not direced at you haha. Alright well when I get home tonight I'll pull the plugs and take some pics and hopefully they will be fouled and it will be a quick clean and fix.

Apr 17, 2013 | 01:57 PM

#22

Jakers

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From: Gilbert, AZ

Year: 1990

Model: Cherokee

Engine: 4.0 L

Found the culprit... has a few cracks down the side...must not have had it seated in all the way on the first install. Luckily I saved the old one. Runs great now! Thanks again everyone for the help!!!! I swear this forum and users combined is the best mechanic ever.

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Apr 17, 2013 | 03:15 PM

#23

cruiser54

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Joined: Aug 2011

Posts: 43,971

Likes: 1,579

From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Good job of sticking with it.

Apr 17, 2013 | 03:33 PM

#24

Jakers

Thread Starter

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Joined: Mar 2013

Posts: 404

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From: Gilbert, AZ

Year: 1990

Model: Cherokee

Engine: 4.0 L

Quote:

Originally Posted by cruiser54

Good job of sticking with it.

I do have another question related to this though, I'm still having an issue with my idle when I come up to a red light or stop sign. When it's in park it seems to do fine, but when I come to a stop while it's in drive it wants to stale... idles around 400 or so, but when in park its about 900. Think that could be from dropping the IAC?