1990 Isuzu Amigo Gas Gauge Quit Working After Oil Change

Tiny
CATHERINE_B
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  • 1990 ISUZU AMIGO
  • 4 CYL
  • 2WD
  • MANUAL
  • 290,000 MILES
Can anyone please help me locate a good used or aftermarket gas gauge (my attempts have failed) or is there a way to repair the one I have? It was working fine - had an oil change, came off the lift and no longer worked. Have an excellent mechanic (not oil change guy). Electrical harness seems to be fine. Simple style dashboard, does not have a tach and has just the 'dummy light set'. Can send picture if it will help. 2.6 L engine. Thank you!
Tuesday, November 9th, 2010 AT 8:17 AM

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Tiny
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Before you get a gauge, I strongly suggest that you ask the garage to diagnose the problem. It may be a ground issue, gauge or float problem.

If you want me to locate one once you know, I will. OR I will if you still want me to regardless of testing.
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Tuesday, November 9th, 2010 AT 5:48 PM
Tiny
CATHERINE_B
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(I may have some terms a bit off from my quick notes I took.)

The mechanic says it is not the fuel sender/sensor because he ran a ground wire and the gauge didn't work. Does my version make sense the way I said it, or I can get a better description tomorrow.

What I find too much of a coincidence to ignore is I drove the car into another shop, we took it for a test drive, the gauge worked, then he put it on a lift to do the oil change, and immediately after the gauge did not work.

I appreciate any and all suggestions. It's unnerving not being able to look at the gauge working.

Thank you.
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Tuesday, November 9th, 2010 AT 6:12 PM
Tiny
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Okay, so you had it diagnosed, that's the important part.

A couple thoughts to run by you before you cry "foul play". First it is possible. But the cause must be determined. There would be no motivation be any tech to want to tamper with it. Now I have seen Older vehicles that are weak in the frame and flex I have seen wiring problem happen, fuel and brake fluid lines leak just off the top of my head, that I would not have believed if I didn't witness it. So it may be a problem that is the fault of the aged car rather than the shop who did the LOF. IT is possible that the lift could have been set in a way that it could have made matters worse. Thus the logic for diagnosing.

So bottom line is you need a gauge.
Have you called the dealer? That would be the first one I would call. Probably obsolete being how old it is. Next I would check is E-bay or scrap yards in your area. What have you tried so far?

A big problem is that the age of the truck and the Obama car crushing era may have made these extinct.
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Tuesday, November 9th, 2010 AT 7:13 PM
Tiny
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Right - my reason for mentioning the coincidence is because I agree it's possible something got loosened up. The timing is just too strong. Before lift: Works. After lift: Dead. My strong desire to have it working mixed with hopeful optimism make it seem feasible that there is a clue to what might have 'loosened up' during that ride on the lift or oil change, etc. I can't believe it's pure coincidence - while absolutely not claiming intentional foul play, certainly.

Certainly, I have checked with the dealer and some online sources for after market parts first before taking this route. As did the 'good mechanic'. I don't know where to turn, hence I signed up for the paid level forum question anticipating someone will lead me to a 1990 Amigo gas gauge.

I need to get this fixed and will stay tuned for a solution one way or another.

Thanks in advance to anyone who can help.
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Tuesday, November 9th, 2010 AT 7:23 PM
Tiny
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Okay, You did your homework. Lemme try. I'll update.
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Tuesday, November 9th, 2010 AT 8:15 PM
Tiny
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Is this part of the cluster.I can look it up, but would rather know from you in the event my info is wrong.
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Tuesday, November 9th, 2010 AT 8:29 PM
Tiny
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If you would be kind enough or patient enough to write out the exact info and wording to ask the mechanic, I am going to the shop tomorrow for a fan belt and can find out exactly whatever you tell me to ask or want him to try while we're at it.

Thanks very much!
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Tuesday, November 9th, 2010 AT 9:04 PM
Tiny
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I looked it up, it is part of the cluster.

There are two ways to go about this. Get it rebuilt( if possible) of find a used cluster.

I will update tommorrow.
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Tuesday, November 9th, 2010 AT 9:18 PM
Tiny
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Thank you so much! I will await your follow-up then. I'll be away from the computer in the am EST until midday.

I really appreciate your help.
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Tuesday, November 9th, 2010 AT 9:33 PM
Tiny
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You need to specify with or with out tachometer.
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Wednesday, November 10th, 2010 AT 4:34 AM
Tiny
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Thank you - Those look like super leads. I don't know if my model has the 'cluster' per se, if that means those 3 gauges in a set. I do not have the tach. I have the simple heat gauge on the left, mpg & odometer & trip meter in the center (large) and smaller gas gauge on the right. (Other 2 working fine.) The photo on the after market shows 'w/tach', as you indicated. I hope they have the 'plain' version. My model Amigo was the 'plain' version; the upgrade had the more sophisticated dash panel gauge layout.

I won't be able to call the leads you supplied before leaving for my early am appt in 2 hrs; nothing will be open yet. Maybe I should wait on my repair work planned for later this morning in case I need to ask them to take out that gauge to send it off for repair to the other shop (link you sent). Or if there are other ideas to check we ('you') discover today.

I will stay tuned and report anything back from my end.
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Wednesday, November 10th, 2010 AT 5:07 AM
Tiny
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The second link did have with or without tach, I just randomly picked one.

The picture is just a stock photo, not specific to yours. It would be ironic if it was the same.

I think these are your 2 best bets.

Beware if the gauge is not the problem, nothing is going to change. Before you order, verify with the shop that this is indeed the problem.
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Wednesday, November 10th, 2010 AT 5:12 AM
Tiny
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Oh good, I didn't notice the option w/ or w/out tach.

*Do you have any specific questions I could ask them about checking before ordering? I am exactly on your wavelength that it 'really is' the gauge, because my suspicions keep getting hung on the fact the gauge worked one second and then did not. The whining oil change guy was complaining about the wiring harness blah blah when I reported immediately that the gauge was not working.

The good mechanic (not the oil change guy) is a real professional with good shop equipment. Other than running a ground and the gauge doesn't work (as he did first off), have you any other suggestions or way that I should ask re: testing, please?
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Wednesday, November 10th, 2010 AT 5:22 AM
Tiny
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https://www.2carpros.com/forum/automotive_pictures/30961_amigo_1.jpg



https://www.2carpros.com/forum/automotive_pictures/30961_amigo3_1.jpg

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Wednesday, November 10th, 2010 AT 6:03 AM
Tiny
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Wow - Great! I am printing out and taking the laptop. Hoping for the best. Thanks!
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Wednesday, November 10th, 2010 AT 6:41 AM
Tiny
CATHERINE_B
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Update: I saw the mechanic today and showed him your resources. I will be going back in a week when he will take the time to pull the unit and test more thoroughly. He said the same thing you did, he wanted to test it thoroughly before ordering another one or sending this one in for repair.

I will update the post after that time. I want you to know what a relief it has been to have your help and the knowledge and resources that you shared.

I'll be following up. Thanks so much!
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Wednesday, November 10th, 2010 AT 4:06 PM

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