Starting only when I give it gas.

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hestleck

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I have a 95 sho that one day just cut off on me while I was on my way to taking it to the dealer to get my A/C worked on (BAD IDEA, DEALERS SUCK) and find out why it cut off. They said I needed or recommended to get a new TP sensor, IAC Valve, Camshaft sensor, and Ignition coil. Which they said all the parts were obsolete. Funny. I started my car or at least tried to and it would turn over but not start. It was trying to but wouldnt. Almost as if it was getting some gas for a second to almost start everytime i would turn the key. I put my foot on the gas and it would start, but whan I took it off it would stall out. So I pulled the codes to it and got a 33 (EGR valve opening not detected) and 556 (Fuel pump primary circuit failure). I am just about to buy the parts and find out if that will solve my problem. I started it today and kept it idled up and it was acting like it was going to stall out for a while off and on and after about 5 min of running it finally did. Any ideas on what is causing this issue?
 

shooff82

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I wouldn't spend the money on all of those things just because the dealer suggested it. Not talkin sh*t on all dealers and mechanics, but they're a business and businesses make money.
The egr wouldn't be a hard start issue I don't think. Its just emissions(something we po-dunk kansans don't have to worry about). My money would be on the TPS or a massive freak vacuum leak(highly unlikely). If the coilpack is bad, you'd have issues all over the tach. The IAC would cause a rough or hunting idle and wouldn't be a hard start condition. If the IGN MOD is bad, it will either run or it won't. Or it will run fine for awhile then die and start right back up. Cam sensor; IDK. I've haven't had a problem with one and not familiar with the symptoms.
But my money is in the fuel delivery dept, i.e. the TPS. It sounds like a very rich or lean condition. That's why you need to throttle it, either to let in more fuel or more air to let it run.
IDK on the fuel pump circiut either. Never had that problem.
I hope you get it figured out.
 

rubydist

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your 95 will have 3 digit codes, so it will not have a 33 code. check again.
 

SHOZ123

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If you have to open the throttle for it to start that would point to the IAC sticking closed.
 

hestleck

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I installed a new IAC valve and its still doing the same thing. Thats also what I thought it was, nope not that.
 

94carolinaSHO

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I would check out the mechanic that has obd1 and 2 scanners. My advance and autozone only checks obd2.
 

shooff82

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Can you get someone to start it and keep it running while you stand behind it and see if maybe its flooding itself out? Maybe its something like the BAP or the MAF, but I think theyd trip the CEL.
I still think the tps or the maf. The tps wouldn't trip the CEL. Here's a dumb idea; take the tps off the throttlebody and have someone crank it while you turn the lever in it and see if it fires like that.
Here's a more stupid idea; maybe its as simple as a clogged fuel filter. I'm just throwin out ideas here. Good luck, man!
 

luigisho

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If you think it's the MAF just unplug it and see if it runs in limp mode. Doesn't the fuel pump/circuit code get triggered every time a car stalls?

Can you hear the fuel pump prime with the key in the on position and the engine off (just before engaging the starter)?
 

hestleck

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I dont think its the MAF. I cleaned it and everything. But I will try this out though. As for the fp circuit code being triggered I doubt it because I did the check with KOEO using the Actron CP9015 to get the code.
 

hestleck

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I am going to get a new tps tomorrow and I will see if thats the issue. Since I have been given that advice twice now and I thought it may have been that in the first place. But I used the one on my old engine and it still did the same so I figured it was not the tps.

New situation

I go out tonight and unplug the MAF connector and I start it up a few times and it finally runs but then stalls out after a few min without me giving it any gas. When I conect the MAF again it will only start when I give it gas but it wont stay running. Im thinking now its a bad MAF. What you all think?
 
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luigisho

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It may be but the 'limp home mode' should allow it to run (poorly but run). Do you have access to a used one or someone around with a known good running car to swap over?
 

hestleck

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No I dont have access to a used one. I ordered a new one so I know it will be good when I get it. Im not going to try the limp mode. I just will ride my GSX-R until I get all the parts i need. Im going all new on any and everthing that may be the problem so I wont have to worry about it later on down the road. Having a SHO is exspensive but worth it.
 

shooff82

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If you have the money to swap out everything else, that's up to you if you wanna do it. But if it idled when you unplugged the MAF, I'd wait til you get that changed and see how it runs then. I'm sure that's probably the issue.
 

Eric VerValin

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You check the 2 little 10 amp fuses under the hood? The "accy feed" will not feed power to the CCRM if its blown.. ;) Ask me how I know.. lol It was my $650 fuse... fuel pump, CPS... I did a lotta things back in the winter of 2000 lol. :)
 

hestleck

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Got a new maf and that seemed to may had been the issue. It ran almost the same at first then after a while of holding the gas and letting it get warm it ran on its own. As well as it started right up every time after that like a champ while idling fine. So all that for a bad maf. I bought alot of stuff to get my baby running but she is back in business now. Thanks everyone for all there assistance. I will give it a few days and see if anything will go wrong.
 

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