My 87 IROC wont cold start anymore... I want to pickup a coldstart valve. Anyone know where I can get one or does anyone know the part number for the coldstart valve is ? Its the 9th injector. ( I believe)

My local dealers are schmucks and keep trying to sell me an injector cleaning kit or something of the sort. They also claim that it is discontinued which would really suck.

 

THere's a used one on Ebay right now that I just saw while looking for some parts. http://cgi.ebay.com/ebaymotors/ws/eB...category=33553 and the part number in the picture is 17080402. It doesn't come up on GMpartsdirect.com either... I'll be cleaning mine while I have everything apart just to make sure it continues to work right... Hopefully mine just needs a cleaning if these things are discontinued.

 

It may be possible to have Rich at cruzinperformance.com to rebuild yours. I would email him to see.

 

sweet.. thx for the info guys, if your ever in El Paso lemme know and I'll buy you cold one.

 

I bought the injector, you should check out that guys site.

www.chevythunder.com . Its all about TPI, just about everything you could want to know.

 

How much was the CSI? Just wondering because it seems possible that an 89 PROM would be cheaper than replacing the CS injector. But i guess a stock 89 PROM would have VATS, making this a non-option anyway as a straight parts replacement. Nevermind.

 

If this injector does not resolve it, then im fu*ked really. Changing the ECM, would that change anything, that injector would still need to exist wouldn't it ?

 

No you're not. If this doesn't solve it, you need to figure out what the real problem is. It could be a coolant temp sensor, or a number of other minor problems. The CSI is cheap and easy to replace, so you might as well swap it and see what happens. If it doesn't fix the problem, we take it from there. If you can get your hands on a scan tool, it'll make life easier, but there's always ways around it.

 

Thanks for the vote of confidence. I think im going to pick up a scanner and work from there if this does not solve it.

 

I just noticed that your location says Texas. Granted i've never had one, but i was under the impression that the CSI system wasn't much use except in pretty cold temperatures. Not sure what 'pretty cold' means, but i don't think el paso ever gets what i would call 'pretty cold'.

In other words, if i lived in texas and had cold start problems, the last thing i'd look at would probably be the CSI. There are plenty of other possibilities, including the CTS, or even something as weird as a failed FP relay not priming the fuel pump when you key on.

 

Good observation Ed. The CSI shouldn't have much effect on cold starts above 40*.

 

Thats a good point... Its been cold as hell here recently, but these cold days for me are like days when kids up north go to the beach. Ultimately it seems like its a problem where somethings just not getting fuel. When I prime the FP enough times, (30 or so sometimes), it will start. I've resorted to using starting fluid (sucks *** cuz my buddy has a 305 carb, and he laughs out loud whenever he see's me spraying into my plenum).

I am open to all suggestions.. truly.

 

Currently I am waiting on the arrival of the CSI. I think in the back of my mind, I know its not the CSI, mainly because even when the car starts, it sometimes will not rev past 3k without acting like it was starving for gas. I just put a new fuel filter in recently as well because I was having problems with hesitation on WOT. Now that I think about it, the bigger problem began when I changed the fuel filter and I used that "Redline injector cleaner" on a new tank of gas.(stuff either works really well, or really funked things up) Any ideas ?

 

PLEASE don't use that stuff! It is one of the worst things you can do to a motor. Ether is a very good solvent and it washes the oil right off the cylinder walls, wearing them down pretty quickly if you do it much. Don't know how it is with gas motors, but diesels will get "addicted" to the ether and won't start without it!

 

PLEASE don't use that stuff! It is one of the worst things you can do to a motor. Ether is a very good solvent and it washes the oil right off the cylinder walls, wearing them down pretty quickly if you do it much. Don't know how it is with gas motors, but diesels will get "addicted" to the ether and won't start without it!

FWIW: a friend of mine blew the (cast iron!) intake manifold off his truck with that crap. Shattered it into pieces.

 

OOPS! Sorry for the double post, but I can't delete posts. Anyone else with that trouble?

 

Can anyone else recommend a new part to look into replacing? I've got the CSI on its way but that looks as though it wont fix the problem. I also found a fuel ____ relay, just gotta pick that up.