Has anyone dealt with Isuzu Rodeos? - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

Insert BS here A place to discuss anything you want

LinkBack Thread Tools Search this Thread
Old 03-13-2015, 05:25 PM   #1
Elite Member
Thread Starter
iTrader: (9)
Join Date: Sep 2008
Location: Bloomfield, Michigan
Posts: 5,672
Total Cats: 9
Default Has anyone dealt with Isuzu Rodeos?

I have googled this problem the entire day and have yet to come up with a answer to why this car keeps blowing a 20 amp fuse (fuel pump). Apparently, it's a recurrent issue with the Rodeos. However, no one has been able to find a fix, or I haven't been able to find it on the web.

This is my father's car and has been running fine for over 3 years now. A few months ago he had the car worked on by a mechanic that scammed him. The mechanic returned the car and the fuse began to short almost immediately. The mechanic also seems to have disappeared so I have no clue what exactly was done to the car. My father told me the mechanic said he would replace the ECU, I inspected the car today and replaced that unit with another I bought at a local yard. The unit I removed looks like it was never touched.

The car turns on, idles, and it runs regular. There were no misfires or hesitation. However, after 20 minutes or so it shuts down because the fuel pump fuse blows up. I went under the car and followed the wiring to the tank and did not see any open cables that could be shorting. I didn't bring my multimeter with me so I can't take any measurements. The wiring diagram I found indicates that the pump is wired in series with this fuse. Therefore, my guess is that the surge must come from the pump overworking the circuit. Does anyone have experienced something similar or has done worked on an Isuzu? Sorry for the long boring story, any help will be appreciated, thanks!

TL;DR fuel pump fuse keeps blowing up. Someone may have messed with the car and I have no clue with what. Comment below.
buffon01 is offline   Reply With Quote
Old 03-13-2015, 06:26 PM   #2
Sadfab Union President
iTrader: (2)
Join Date: May 2014
Location: Kansas
Posts: 2,541
Total Cats: 105

I know it's also a honda passport...

Have you changed the fuel filter recently? If the pump has to work too hard I could see it going to a sort of thermal runaway and pulling power till the fuse pops.

I owned a pink rodeo for like three days, only car who's red paint pinked more than most miatas I see. I guess they are tanks, or at least they have better-than-most gear under them...
deezums is offline   Reply With Quote
Old 03-14-2015, 02:03 PM   #3
Elite Member
iTrader: (14)
patsmx5's Avatar
Join Date: Aug 2007
Location: Houston, TX
Posts: 7,821
Total Cats: 119

Yeap my guess too, a restriction somewhere in the fuel system, bent hose, kinked hose/pipe, plugged up fuel filter, or just a dying pump. If all that checks out, I'd probably install an amp-meter at teh pump and see what it's showing, then run 12V directly to the pump and check again. If running 12V directly to it shows less current, the problem (whatever it is) is not the pump, but the wiring.

I dunno what year this things is, but I had an 86' Isuzu Trooper II, and have worked on a couple 90's Isuzus. Wiring on the 80's was GARBAGE so if it's an older rodeo, just rewire the pump from the get go.
patsmx5 is online now   Reply With Quote
Old 03-14-2015, 05:18 PM   #4
Elite Member
iTrader: (5)
Join Date: Oct 2007
Location: Canton, Ga
Posts: 1,582
Total Cats: 11

Probably the pump if wiring and lines check out. Could also be a plugged regulator.
Stealth97 is offline   Reply With Quote
Old 03-15-2015, 02:18 PM   #5
Elite Member
Thread Starter
iTrader: (9)
Join Date: Sep 2008
Location: Bloomfield, Michigan
Posts: 5,672
Total Cats: 9

Well I am back in Orlando and my dad went ahead and replaced the filter, but it did not help the issue. He said he'll keep me updated on the issue. Thanks for the comments
buffon01 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
What to do about scored cam journals? Joe Perez Engine Performance 12 09-01-2015 10:16 PM
Anyone familiar with Isuzu Impulse? Opti Insert BS here 24 07-15-2013 08:34 PM
Project rally beater MTPockets Build Threads 26 01-24-2011 08:37 AM
OMFG I want a rollbar but I don't want to die cjernigan General Miata Chat 74 08-06-2008 04:36 PM
Should I Turbo My 86 Isuzu Troopoer II? patsmx5 Insert BS here 12 02-27-2008 03:45 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 05:49 PM.