A boy and his Trooper (very pic heavy)

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Re: A boy and his Trooper (very pic heavy)

Postby shaggydoink » Sat Jan 17, 2015 10:30 am

I am a total junkie when it comes to things like these original ads and brochures, and while my wife reminds me that in some instances things can be bought off eBay, I get even more jazzed when things are simply found "in the wild" so to speak. Great score, and thanks for sharing!! :thumbup:

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Re: A boy and his Trooper (very pic heavy)

Postby redcentinela » Tue Sep 01, 2015 2:45 pm

That's passion!
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Re: A boy and his Trooper (very pic heavy)

Postby hessmess » Sun Sep 06, 2015 10:19 am

A couple of those scanned picts gave me an idea of what my original spacer color is like. It is now a bit faded from all the years in the high desert.
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Re: A boy and his Trooper (very pic heavy)

Postby totten » Tue Jan 12, 2016 11:37 pm

You did great job of posting everything done. Thanks for the pictures.
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Re: A boy and his Trooper (very pic heavy)

Postby onemanarmy » Thu Jan 14, 2016 11:04 am

did you ever get the carb swap done?

and why go the carb route? Seems to me that getting a carb setup to pass emissions would be more difficult.
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Fri Jan 15, 2016 2:33 pm

Thanks everyone!

I have not yet completed the carb swap. I've gotten as far as dropping the tank, and removing the FI system/intake. I've had many other things that take priority over Trooper "fun" lately. I'm sure many of us can commiserate.

I decided on the carb swap because of the successes that other folks on here were having with it. As my truck is now 25+ years old, I no longer have to worry about emissions testing in my state.
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby PPCLI-JIM » Sun Jan 17, 2016 1:53 am

I've also have considered it. as it would get me around whatever it is thats making my Trooper act all italian :D
Its a small amount of fuel , but it's a whole lot of walking..Note from my Dad
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Fri Mar 08, 2019 10:52 am

Just a quick update:

Last summer I re-installed the tank and fuel injection system. I didn't have enough confidence to do the carb swap. When I put everything back together I "deleted" the EGR tube (I left the valve and plugged where the tube was with bolts). Everything else went back together as I had it before but I can't get it to start. I have good fuel pressure up to the rail and I bench tested all the injectors. It will start if I spay ether into the intake though (so I must have spark, right?). I'd really like to get this running again, so if anyone has any ideas, I'm all ears.
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby itsmehb » Fri Mar 08, 2019 11:07 pm

Wow, lots of work and then no start. So where to start. Well, your first assumption is correct. It would not start, period, if you didn't have spark. So the fact that it will start using spray, we can assume the ignition is not the issue. Next would be the fuel system. Is the pump running? Is there any pressure at the fuel rail. That may be the next thing to check. Also, the filter could be stopped up. It's hard to get to as it's under the car forward of the rear axle on the right side. There's some other issues but I think first would be to establish fuel pressure at the rail.
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Re: A boy and his Trooper (very pic heavy)

Postby DSUZU » Sat Mar 09, 2019 8:30 am

Since you say you have pressure at the rail, SOMETHING is keeping your injectors from firing. Any chance you unplugged the injector resistor pack on the right fender well? Double check all electrical plugs. Dennis
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Re: A boy and his Trooper (very pic heavy)

Postby itsmehb » Sat Mar 09, 2019 9:51 am

DSUZU wrote:Since you say you have pressure at the rail, SOMETHING is keeping your injectors from firing. Any chance you unplugged the injector resistor pack on the right fender well? Double check all electrical plugs. Dennis


My bad. I read the post where you said you had pressure at the rail, then posted that you should check that.
1990 Amigo, 2.3 5 speed (sold)
1991 Pick up (long gone)
2000 Amigo, 2.2 5 speed(sold)
1985 Trooper 1.9 4 speed (sent back to KS)
1989 Trooper RS 2.6 5 spd. Red

We get too soon old and too late smart!

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Golf is just an expensive way to play marbles
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Sat Mar 09, 2019 10:56 am

Thanks guys! Yes, fuel pressure at the rail. I did put a new fuel filter in when I re-installed the tank.

Dennis, you jogged my memory a little. After I put everything back together and had this no start issue, I replaced the entire fuel injector wiring harness with one from a parts rig thinking there may be something wrong with the original (the wires were pretty stiff / brittle). I didn't, however, trace anything back any further than that. I'm unfamiliar with the injector resistor pack. What exactly am I looking for / what does it look like?
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby MarkB.NV » Sat Mar 09, 2019 5:16 pm

Image
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Sat Mar 09, 2019 10:28 pm

Perfect! Thanks Mark! I'll check it out.
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Tue Jan 14, 2020 2:45 pm

Ok. So this is where I am now.

1) I checked the plug that Mark suggested. Everything was connected securely. I unplugged and plugged it back in a few times (just for good measure). It still just cranks without starting.
2) I bought an in line spark tester (never had one before). When plugging that in and cranking I don't get any light.
3) Knowing that I don't have spark, I checked the following:
- checked to make sure the plug going to the dizzy is securely plugged in (the one with the round connector). I've had issues with this in the past, but it seemed fine.
- checked that there was good ground to the ignition control module (there was)
- Swapped the ignition control module with a spare I had, still no spark.
- In tracing the wires for the dizzy (the ones to the round plug) I noticed that there were a little bundle of three wires that went to an eyelet that wasn't fastened anywhere. I assumed that this could only be ground (right?), so I grounded it. Still no spark.
Image

- I also checked the ignition coil fuse and swapped the engine relay with the AC compressor relay. Still no spark. (I'm not even sure what the engine relay does, but I was grasping at straws).

Some additional details:
Some of the stock components have been moved, removed, or bypassed. It's been at least 2+ years since I've worked on this, so I'm having a hard time remembering everything I did (or why).

Moved:
- The ICM: to the top of the valve cover
Image

- This thing from under the plenum to the front of the common chamber (it's upside down now, does that matter?):
Image

- The temp sensor to here (I think this is where the thermal valve was, so that has been removed)
Image
** Also note that I plugged the port on the intake tube in that pic. I think that also went to the thermal valve.

Bypassed:
- This thing (VSV?):
Image

- These vac lines:
Image

Removed:
- The EGR tube. Both ends have been plugged, but the valve is still in place:
Image


Additionally, the smog pump and associated components were removed many years ago (but the truck had been running since).

If anyone has any ideas, I'm all ears. If anyone sees anything in the pics that I need to change, move, remove, add, etc. let me know.

As always, thank you all for all your help!!
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby shaggydoink » Sun Jan 19, 2020 9:45 am

Is the valve cover ground OK? I had a "no spark" situation at one point in the past and this was the culprit, the original wire ribbon had broken off from the connector in its age.
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Re: A boy and his Trooper (very pic heavy)

Postby gruff54 » Mon Jan 20, 2020 7:30 am

Double check all grounds. I had a no spark issue after a head replacement a few years ago. All grounds were in place, as far as I could tell. I finally made up and installed one or two additional/duplicate grounds and I had spark. Never did find out which one wasn't good, just left the additional grounds in place.

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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Mon Jan 20, 2020 10:05 am

Thanks Shaggy & Mike! I'll check all the grounds and report back.
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Tue Apr 28, 2020 9:16 pm

Bingo. It was the grounds!

https://youtu.be/D9w50rvlFfE

Watch on youtube.com
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
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1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Wed Apr 29, 2020 8:29 am

So, if you've clicked the link to the youtube video, you have seen that the idle is quite high (1800~1900 RPM). I assume this is due to the bypassed components. All I should need to do is use the adjustment screw to bring that back down, correct?

pic borrowed from Shaggy:
Image
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Sun May 03, 2020 8:42 pm

Ok, I adjusted the idle down. It seems happy to be at around 1300, but lower than that it wants to stumble. One thing it's going is surging a little (between 1250-1350 or so). It's got some old gas in it, so maybe I just need to burn through that (put some seafoam in the tank?).

I took the weekend and get her cleaned, and all the missing pieces bolted back on (gas thank skid plate, mirrors, front bumper, back bumper). I also swapped the hood for a better (less dented) one, installed my hood scoop, and the Lund visor. The DMV out here it still closed until next week, so I won't be able to get it back on the road until then.

Here's how she sits now:

Image
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Wed May 06, 2020 1:14 pm

So this is what it does at idle:

https://www.youtube.com/watch?v=8fTrup1 ... e=youtu.be

Watch on youtube.com


Any thoughts on cause?
-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Fri May 22, 2020 11:26 am

I've run some fresh gas through it and the "surging" has gone (though my idle is still a little too high). I believe my dizzy timing is a bit too far advanced (as I get some pinging under hard acceleration).

I had the fuel pump go on me:
20200512_101122 (Medium).jpg


Instead of dropping the tank (again), I opted for the access panel method:
20200517_103209 (Medium).jpg

20200517_104441 (Medium).jpg

20200517_134704 (Medium).jpg


Worked like a charm too! Had everything wrapped up and the truck running again in a couple of hours.
49919125758_0f50166007_o (Medium).jpg
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-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
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Re: A boy and his Trooper (very pic heavy)

Postby electricpuppyboy » Fri May 22, 2020 11:27 am

I also picked up another toy:
20200513_173446 (Medium).jpg
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-Bob

1988 Trooper LS 4ZE1 mua5 - "Build" Story
1990 Trooper S 4ZE1 mua5 - Being parted out - click for parts
1989 Trooper RS 4ZE1 Auto - gone
1989 Trooper LS 4ZE1 Auto
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Re: A boy and his Trooper (very pic heavy)

Postby 93trooperpooper » Fri May 22, 2020 10:23 pm

electricpuppyboy wrote:I also picked up another toy:
20200513_173446 (Medium).jpg

i like it. 8)
received it for free, but its been costing me money-go figure! '93 trooper ls dohc auto-now over 400,000 km-! now has manual hubs,784 springs,t-bar crank, rancho 9000 shocks, all led interior lights, hid headlight bulbs, drilled/slotted rotors, custom chipped/cracked headlamps, rust. and mystery oil leaks . and unobtanium parts from JERRY LEMOND.
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