Last post on Jul 09, 2013 at 7:15 AM
You are in the Isuzu Trooper
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Isuzu Trooper, SUV
#7835 of 11966 Isuzu 3.2 V6 problems
May 21, 2003 (8:28 pm)
Hey guys, glad the Trooper link is still going on strong.
Anyway, I have a maintenece question regarding my bro in law's 2000 Passport, (Sadly, there's no Passport discussion board). Anyway, I think the V6 used in his `Port is the same unit used in the >'98 model Trooper???
His 'Port has been giving him a hard time when starting the engine when cold. Sometimes requiring 3x or more tries before it finally starts. He says his mechanic says he needs to replace an ion sensor(?) but he's wondering if he can just adjust the idle a bit so that it doesn't die after he starts it. But, he can't find the idle screw. If anyone has any info regarding how to fix this little problem, it would be greatly appreciated. Also, the 'Port has ~60K, what type of maintenece is usually required at this point?
May 21, 2003 (8:38 pm)
The Edmunds Maintenance Guide has info on the Passport. There are a few Passport discussions in the archives, but I doubt that there's much in them to help with your BIL's problems.
#7837 of 11966 suavechavo
May 22, 2003 (6:26 am)
I'm not sure there is an idle adjustment screw, I think that is all computer controlled now on the fuel injected engines (I could be wrong though).
Anyway, your BILs problem could be the fuel pressure regulator, or possibly the intake manifold gasket (FPR is more likely IMO).
The mechanic could have been referring to the oxygen sensor, but AFAIK that doesn't come into play for cold starts. On most designs the computer doesn't even take information from the O2 sensor until the engine is warmed up.
The Rodeo board is probably a good place for Passport questions, they are basically the same vehicle.
#7838 of 11966 Yeah, Passport engine = Rodeo engine = 205 hp?
May 22, 2003 (6:44 am)
right? Maybe even 190 hp? Depending on the year.
#7839 of 11966 suavechavo
May 22, 2003 (10:19 am)
What temperature you mean by "starting the engine when cold"? Anyway, try to change fuel filter and sparks, also be sure its starter turns quite good. Concerning the oxygen sensor, Sdc2 is right: it doesn't work when you are starting the engine.
May 22, 2003 (1:24 pm)
Thanks for all yalls help.
I checked the Rodeo section first cuz they are the same vehicle, but I usually check the Trooper discussions daily cuz hopefully soon I'll be able to finally buy one. Love the Trooper!
Umm, I think the V6 is rated at 205 hp, its been awhile since the 'Port has been serviced and my BIL is kinda used to working on older vehicles so thatís why I thought I'd ask here first. I think eventually heís gonna take it in for the 60K maintenance, but he kinda wants to do some of the maintenance himself.
Sorry I should have been clearer, itís hard to start after it has been sitting for a while, so it's the engine thatís cold. I thought fuel filter too, but maybe the spark plugs and wires need replacing, so I'll let him know.
Thanks also Steve for the link, I've been looking for a way to look up TSBs. How do they work anyway, do let the dealer know about the TSBs that affect your car and do they have extra info regarding how to fix the problem?
May 22, 2003 (2:08 pm)
TSBs are more "advisory" than obligatory. Your mechanic may not appreciate you showing up with a laundry list of TSBs with a demand that they all be done. Especially if the full TSB says that only a few models made on Fat Tuesday between 9 and noon are affected.
Some people go in with a complaint and mention they saw a TSB that sounds like it may apply. Others wait until the dealer says "cannot reproduce" and then they bring the TSB out. Still others say they saw a TSB and would like to see the "full" text since we only have summaries here. This gives them a lead in to ask the service writer whether their car needs it.
Anyone have a favorite technique?
#7842 of 11966 Suavechavo - I Second Sdc2's FPR Comment
May 22, 2003 (3:34 pm)
With a bad one, the longer it sits the more pressure and fuel that can bleed from the fuel line. It takes several cranks before the fuel pressure is back up to spec.
Have your friend turn the key to ON for a few seconds before cranking. That starts the fuel pump and repressures the line. If the vehicle starts fine using this technique you likely have found the problem.
I really doubt your friend has an ion sensor problem. It would be the first one I have ever heard of. Also I would think that would cause problems at all times not just for the first couple of failed cranks.
May 22, 2003 (3:34 pm)
The passport is the same DOHC engine found in the Rodeo. But the problem to me sounds like either:
1) Fuel Pressure Regulator or
2) Intake Manifold Gasket
If the car has problems pre-start, then it's the fuel pressur regulator if it's post-start til the engine is warm, then it's probably the intake manifold gasket.
Welcome to the crew by the way.
#7844 of 11966 Hellooooooo!!!!!
May 27, 2003 (9:47 pm)
What's happening? 6 days without a post!