CJ-Howell install finished, impressions. - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 07-25-2002, 05:35 PM Thread Starter
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CJ-Howell install finished, impressions.

I got the Howell TBI fuel injection system all buttoned up on my CJ-7 last night and got to take it for a drive. For those who didn't know, this was a replacement for the Carter BBD on my '83 with a 258, auto.

Install impressions:

The kit was pretty easy to install, the scary part was reading the instructions where it said "cutting" and "Splicing", but this was just to run the electronic ignition outside of the factory computer (the Howell computer does not read or adjust spark). Almost all of the vaccum lines were deleted and all vaccum switches except for the CTO valve (to operate EGR and charcoal canister purge) were eliminated. It's sooooo clean under there now!

The instructions were perfect! One spot where it said to "Cut the rest of the computer harness from the main trunk", all that was needed was to unplug the harness. At the end of the weekend, the fuel pump running all the time was the only flaw (see service impresions).

Service Impressions:

I sent and E-mail to Howell about the fuel pump problem, and then called them on monday to rectify it. They didn't get back to me on tuesday, but wednesday they had a call back to me. It turned out to be two wires switched around in the supplied wiring harness. Very easy fix once it was diagnosed.

Driving impressions:

WOW! The Jeep has never run this good. It starts cold and runs IN GEAR without my foot mashed halfway to the floor on the gas pedal to keep the BBD chugging away. The motor feels new, and has not had this much smooth power since I owned it. After the computer settles in, I will do a fuel mileage test.

Overall:

I would recomend this to anyone struggling with that old Carter on their CJ/YJ. It was a fairly easy upgrade that will be a joy for years on my Jeep. I do not regret spending the money. If anyone has any questions please feel free to post here or send me an e-mail.
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post #2 of (permalink) Old 07-25-2002, 09:26 PM
 
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Re: CJ-Howell install finished, impressions.

Did you have the typical 258 oil leak problems before adding the FI? I was wondering since the Howell kit cuts down on the number of vacuum hoses, if maybe it helps cut down on the vaccum problems.
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post #3 of (permalink) Old 07-26-2002, 01:27 PM Thread Starter
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Re: CJ-Howell install finished, impressions.

belotti, I'm sure that removing the vaccum hoses and related vaccum switches was part of the fix. By eliminating these sources of leaks, it lessens the chance of lean idle. I don't, however think this was the main problem I had with the carb. The computer/stepper motor/sensor(s) (pick one or more) were dead and thus not allowing the carb to work properly. This on top of a worn out throttle shaft on the carb, and who knows what else was wrong, I decided to replace the whole works with EFI.

The only vaccum lines left are:

map sensor
vac advance on carb
purge valve on charcoal canister
PCV
power brake booster
cruise control (please no flames for having cruise on my Jeep)
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post #4 of (permalink) Old 07-29-2002, 09:58 PM
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Re: CJ-Howell install finished,Congrats...

Congradulations: Sounds like a job well done. I have been struggling with the whole Carb/vacum thing on my 83 CJ 258 manual for years and just recently found out about the fuel injection conversions. Did you consider the Holly conversion kit? I'm just curious what made you decide on the Howell conversion? I'm just learning. Plan on converting myself...soon!
post #5 of (permalink) Old 07-30-2002, 08:42 AM
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Re: CJ-Howell install finished, impressions.

Smokngun,

You wrote:
"The only vaccum lines left are:

map sensor
vac advance on carb"...

Where is your carb in all this? I thought the point was to remove the carb when installing the Howell. I am not being a smart a$$, just confused (as usual)

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post #6 of (permalink) Old 07-30-2002, 08:49 AM
 
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Re: CJ-Howell install finished, impressions.

He's probably talking about the vacuum advance on the distributor. [img]images/icons/smile.gif[/img]
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post #7 of (permalink) Old 07-30-2002, 08:50 AM
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Re: CJ-Howell install finished, impressions.

That should read: The Manifold Vacuum line from the TBI assembly to the Vacuum advance on the distributor...

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post #8 of (permalink) Old 07-30-2002, 04:01 PM Thread Starter
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Re: CJ-Howell install finished, impressions.

Sorry for the confusion. it was meant to read, "vac advance on dist" not carb. The carb is laying in a pile of wires and vacuum hoses on my garage floor. I'll sweep it up someday!
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post #9 of (permalink) Old 07-31-2002, 07:26 AM
 
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Re: CJ-Howell install finished, impressions.

do you have a pic of what it looks like now?
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post #10 of (permalink) Old 07-31-2002, 07:31 AM
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Re: CJ-Howell install finished, impressions.

Mike, don't sweep it up...some of those parts are very hard to obtain. May I suggest:

1. Put the stuff in a box.
2. Put the box on a shelf.
3. Find someone in desprate need of those parts.
4. Send it to 'em for free!

It's not only a nice thing to do, but fun!
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