stalling when starting

[circmand]

Tried a search could not find anything. When I go to start mx VX it stalls out. If I pump the gas pedal it will stay on but seems to be trying to cut off. Any Ideas

[etlsport]

is there a certain time that it happens?

mine used to do that after the vx had sat for 30-40 minutes and i started it again.. replaced the fuel pressure regulator and ive been all good since... contact joe isuzu.. i sent him a "kit" with a tool needed and photographic directions made up by a member here.. once hes finished with it he can send it out to you

[circmand]

seems like it is always doing it but I always have left it at least the half hour.

[technocoy]

Mine does this when it's hot outside. It seemed weird to me that it was when it was hot, so I tried (completely by chance) taking the gas cap off for a second and putting it back on. This works EVERY time. It's also making me think it has something to do with pressure in the tank. I thought it may be the cap, so I bought a new one, but same thing.

Maybe it is the fuel pressure regulator. I'll have to look into it.

Try removing the cap and putting it back on as an immediate fix though.

Cheers,
technocoy

[circmand]

my area certainly qualifies. The middle of the desert but it is funny while it still hits 100 degrees most days we are not in the 110s and 120s anymore and it is worse now. What does make sense is if the fual cap is not allowing air in then the fuel pump needs to work harder but since the problem usually occurs after sitting you figure air would have gotten in overnite and it would not be as bad after sitting.

[Finnvx]

try sea foam stuff works great, it fix my high idle problem

[Vehi-Cross-Az]

heres your fix

http://www.vehicross.info/forums/showthread.php?t=15217

check this first

[SilverBullet75]

heres your fix

http://www.vehicross.info/forums/showthread.php?t=15217

check this first

One thing that may separate the symptoms from the idle solenoid and the intake manifold gasket... check engine code.

The idle solenoid problem did NOT throw a code/light. I beleive the intake manifold issue does throw a code... does it not?

[Knivx]

I've been having the same issue of it sputtering and threw a p0171 code i believe and then today it actually died after turning on. Wouldn't stay running without some throttle applied. I took the idle control out and tried turning the key to on to see what happened and it popped the whole plunger thing out, is that normal? The plunger screws back in and i can't pull it out so i'm wondering if thats normal for it to pop out like that? If it's not this then would it be the fuel pressure regulator? This is my first 'new' car with sensors and such so i'm still learning. It seems like the symptoms my buddies Cherokee had and it was the Throttle positioning sensor on that.

[WormGod]

I've been having the same issue of it sputtering and threw a p0171 code i believe and then today it actually died after turning on. Wouldn't stay running without some throttle applied. I took the idle control out and tried turning the key to on to see what happened and it popped the whole plunger thing out, is that normal? The plunger screws back in and i can't pull it out so i'm wondering if thats normal for it to pop out like that? If it's not this then would it be the fuel pressure regulator? This is my first 'new' car with sensors and such so i'm still learning. It seems like the symptoms my buddies Cherokee had and it was the Throttle positioning sensor on that.

It is possible that it is the TPS. There is a cleaning solution for that that seems to work for many, so it's worth a try.

This is pretty insane really. Recently, there has been a 171 and 174 epidemic.

[l.ectric]

Yeah I just cleaned mine, too. I'm having similar issues as yours... I believe that the unit is caled the Idle Air Control Motor, or IAC. It's about $50 from the parts store.

[MSHardeman]

Wanted to resurrect this thread because I had a bit of an issue last night with Vicki. I drove to work yesterday with no problems, but I noticed that either right before or right as I put her in park that the RPM's dropped considerably (not normal for her) and actually bumped up and down a bit. Watched her for a second and it didn't happen again, so I didn't think anything of it. Turned her off and went to work. When I got back in her last night she started up just fine and I let her warm up a bit as usual (since it's below freezing here).

When I put her in reverse to back out of the parking space the engine completely died. No sputtering, no stumbling, just dead; like I turned the key off. The lights were still on, instrument cluster, radio, etc. Put her in park (with the lights still on) and she started right back up with no problem. Hmmm. Put her in reverse again, and again the engine dies. Went through that a couple of times and ended up having to put her in reverse/drive and step on the gas to stop her from stalling out again. She sputtered along for a bit and every stop sign that I can to I had to put her in neutral so she wouldn't die. Drove her all the way home (luckily catching all the green lights) and when I got near home I stopped at a stop sign without putting her in neutral and everything was fine. OK. Got home parked her in the garage and left her overnight. This morning got in and she fired right up and didn't act up at all on the way to work.

Everything that I have read here is pointing to the fuel filter, fuel pressure regulator, idle solenoid or the fuel pump. I, fairly recently, changed the fuel filter and fuel pressure regulator, but I will change them again just to be safe. I'll pull the idle solenoid and clean it out to make sure that it is working too.

My big question here is; how hard is it to pull the gas tank if I need to replace the fuel pump? The manual says that you need to remove the rear fender, rear bumper, rear inner fender, etc, etc. That's a LOT of work, and I don't mind doing it, but if I can get the tank out without having to remove half of the rear end of the VX I would rather do that. I do NOT want to cut a hole in the floor to get to the fuel pump so getting the tank out is my only option.

Anyone remove their gas tank without removing the rear fender and bumper?

[SilverBullet75]

I'll give it a 95% that the IAC will fix it.

[MSHardeman]

I really do hope that it is that easy. Fingers crossed.

[vt_maverick]

While we're here... whatever happened to Dave (circmand)?