Question about 1997 Isuzu Rodeo

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1999 Isuzu rodeo stopped running. Thought it was out of gas as gas gauge was broken. Checked timing belt beat and it is aligned, Fuel pump came on but was ony pumping air so replaced fuel pump and consequently the gas gauge. Now pumping gas to injector rails, but still won't start. I did use code checker but it says pass. The battery was dead so maybe computer reset and it hasn't started and run so maybe that is why there are no codes. This vehicle also has a security device and when I play with this it seems like it at least tries to start. What am I missing?

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  • william_f435 Jul 18, 2009

    sorry I didn't reply, I was out of town on business. This is a 1999 rodeo, it has spark, can I measure fuel pressure with a tire gauge? The spark plugs are deep within the head, when #1 plug is pulled and I put my hand over the head it blows my hand off the head. I would need to purchase a special pressure tester to determine exact cylinder pressure.

  • william_f435 Jul 20, 2009

    I have been out ot town and not had an opporuinity to try your recs, until yesterday, I have spark on 1st cyl. I cant check compression with my tester as plugs are deep within the head, there is evough pressure to blow my hand off the head when cranked,. Can I use tire gauge to test fuel punp pressure?

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Could be the computer hasn't relearned. It takes about 20 starts to remember. Also test your fuel pressure regulator and replace the fuel filter. Check fuel pump relay with ohmmeter,relay tester, or multi-tester.
Make sure you are getting spark in all cylinders and that you are getting fuel and power to injectors

Posted on Jul 20, 2009

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Spark, fuel,compression,air flow,and timing Then any vehicle will start!
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Posted on Jul 18, 2009

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An engine needs only a few basic functions in order to run, they are fuel, compression and spark.
Have you verified fuel pressure ( I know it is a new pump, but press must be correct), pull a spark plug wire off and verify ignition spark while cranking engine over, pull a spark plug out and test compression ( if a timing belt has skipped a tooth or has broken the compression will be too low).

If the security system is an "add-on", it could be faulty. If it is factory installed we can investigate that after the basics have been verified.
Good luck, let me know.
Regards,

Posted on Jul 15, 2009

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2 Answers

I have a 1999 isuzu rodeo that won't start.


Test the crankshaft position sensor and the cam position sensor. Check the map sensor too.

Mar 13, 2017 | 1999 Isuzu Rodeo

1 Answer

1999 Isuzu Rodeo: the amount of gas in truck does not register on the meter. What could the problem be.


There could be a poor connection or an open circuit between the power control module and the fuel gauge sender, or the fuel gauge sender itself is bad. The sender is mounted to the gas tank and usually can be replaced without dropping the tank.

Apr 11, 2011 | 1999 Isuzu Rodeo

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I have a 1999 isuzu rodeo and the check engine light came on and it was stalling and I had autozone to put a reader on it and it was camshaft sensor and when I got home I jingled the wire and it started...


If the the camshaft sensor has indeed failed, the vehicle will not run, it needs this input for engine timing and cranking idling rpm, ect. If jiggling the wire got it to run momentarily, I would recommend replacing the camshaft sensor first, before buying an expensive p.c.m. As for the fuel gauge, there may be a bad sender in the tank, or faulty gauge. I hope this helps.

Mar 15, 2011 | 1999 Isuzu Rodeo

1 Answer

My 95 Izusu Rodeo v6 3.2L has a lack of power and hesetates upon accelleration. There is no check engine light what should I check?


Could be that the catalytic converter is stopped up or the timing belt or chain needs to be replaced. When is the last time it was tuned up? May need plugs wire etc. Fuel pump may also be going out get a pressure gauge or have it checked for fuel pressure

Sep 19, 2010 | 1995 Isuzu Rodeo

1 Answer

My 1999 Isuzu Rodeos gas gauge shows empty with gas light on all the time even when full . has worked once in last week but very slow coming up


Try Replacing your gas sending unit or gas pressure sensor unit, both fairly east to replace with minimal expenses. If this does not fix the problem then change the fuel pump. But start with the gas sending unit.

Sep 06, 2010 | 1999 Isuzu Rodeo

2 Answers

1998 Isuzu Rodeo 6V, My Gas Guage does not work...what do I need to do?


Hello i had the same issue my gas gauge did not work and i had a bad fuel pump ,i ended up replacing my pump and realized the pump has 2 units attached to it one is the sending unit for the gas and the other the gauge level ,i encountered an issue when i swapped out the old pump for my new pump the gauge did not work any more after replacing,so i investigated after ruling out any wiring defect ,i made sure the pump was properly connected in its self the pump has a connector between the sending unit and the gauge level, and after that i realized the bcm, ECM, or vcm how ever its called (the computer) for my vehicle needed to be re-flashed completely for it to see the new pump... i never would have thought the main computer could not end up just detecting it automatically, all 98 and 99 must under go a re-flashing when any fuel pump is disconnected and replaced... hope that helped...

Aug 20, 2010 | 1999 Isuzu Rodeo

1 Answer

Smog test will not pass


This code is send (in your case NOT SEND)
by the fuel sending unit.

Does your fuel gauge give incorrect of jumpy reading when it's full?

The quick fix is STOP TOPPING OFF the fuel tank when you are get gas.

Keep topping off will push the fuel tank float off it's sensor limit and eventually short or send OUT OF RANGE reading to the fuel gauge.

Fill your truck up to 3/4 tank full.

Drive it for 2-3 days or about 100 miles.
(this will fill the ready-ness data that DMV want)

If there is NO check engine light ON during the 2-3 days then give the smog test another shot.

DO NOT add fuel unit you complete the smog test.
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The CORRECT method to fix your problem is to drop the gas tank and replace the fuel sending unit.

If you truck has over 140,000 miles on it then I will recommend you the change the WHOLE integrated fuel pump/fuel sending unit and fuel filter at the same time.

Jun 02, 2009 | 1999 Isuzu Rodeo

1 Answer

MY DAUGHTER HAS A 1999 RODEO, WE HAVE PUT 3 FLYWHEELS IN IT. THIS LAST ONE THE MECHANIC PUT IN THIS BOLT(PIN) WHICH HE THOUGHT WOULD FIX IT BUT IT LASTED APPROX. 6-7 DAYS AND NOW IS NOT RUNNING AGAIN. ANY...


Somebody has to put a dial gauge on crankshaft, before installing flywheel, and on flywheel after installation, as well as check for proper starter alignment . Get a customer service number from manual, or google & give Isuzu a call to and see if they can shed any light on it.

Apr 21, 2009 | 1999 Isuzu Rodeo

1 Answer

Fuel Gauge Problems


Hey there. Well, I had the same problem on a 1999 Isuzu Rodeo. I thought I'd take the easy out and just replace a fuel sending unit. Don't waste your time. Swap out the entire fuel pump. Go to your favorite autoparts store (Autozone) and ask for them to price the fuel pump. There will be options, get the part number for the cheap one ($80 Airtex, I got mine from a place in Miami). Look up the part number on ebay and buy it for about $80 complete. Spend the money and get a new fuel filter from parts store as well as a Haynes repair manual for the truck. Follow the instructions for fuel pump removal in section 4. You should have a degree of confidence on auto repair or take is straight to a reputable shop. You do need to do some very important things (relieve fuel pressure, drop the fuel tank with the truck on high ramps or jack stands, etc.). This is NOT for the novice. Otherwise, expect the task to take 4 to 6 hours if you don't have a lift. A shop should charge 1 1/2 hours labor and cost of the pump - you need to ask yourself what your time is worth.

Good Luck
Donnie Torok

Jan 12, 2009 | 1999 Isuzu Rodeo

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