pepegurr

I recently aquired a 1985.5 944 N/A in rough shape and I am slowly returning her to life. The PO had left her in such sad shape it was a mees but it is coming along nicely now. I have ran into a bit of trouble now that I am ready to start her for the first time. The first thing I did was replace the timing set per the FSM due to the unknown condition/age of the previous belts. After several turns it is in time perfectly. It will not start, I have checked- fuel pressure at the rail, it has spark, all the fuses/relays are in working order, it turns over fine(well it did until the starter went whilst trying to get it to run), it will pop off but not actually run. Now while I am waitng to get a new starter I figured I would get some input as to possible solutions, tests to run, etc. Any insight you guys could offer would be hugely beneficial and greatly appreciated.

lovemyp-car

first thing i'd do is tap on the fuel injectors near where they go into the engine with a screwdriver and a hammer (lightly, just to give them a jolt, don't break them!). If the injectors are clogged, this should help tremendously. Also, watch for the tach to bounce when you're cranking, if it doesn't move then you're reference/speed sensors need to be replaced...they may need replacement anyway, but that will help you determine what all is bad and what is good.

pepegurr

Thank you very much, I will try those things. I see that you have a V8 swapped Porsche, I am seriously considering this if I cannot get this motor going. I have looked at the kit from renegade but I cannot justify the cost myself, plus I already have a 347 stoker out of my last mustang just sitting around. Did you use a kit or fab everything yourself?

till_that_day

After the injectors, I would give it a little shot of starting fluid and see what it does. If nothing still do a full compression test on it.

pepegurr

Also, does anyone know what style injectors these are? i.e. high/low impedance?

lovemyp-car

oooOOOooo, if i remember correctly they are low impedance, but i could be remembering the chevy injectors, might want to google that one to see if you can get a definite answer.

Stay away from renegade if you do want to go with the swap route, renegade's stuff is trash, i have their bellhousing and clutch kit, and the second i have some money, i'm going to pull it and sell it on ebay or throw it in the trash...the stuff works and i personally haven't had any problems with it yet, but i don't trust it at all after seeing some of the problems people have had with it. Go ahead and start checking out 944hybrids.forumotion.com, there are a bunch of good people and good links there for parts and reference

pepegurr

Thanks for the link for the swap. I did find out that the factory injectors in the N/A are 2.1 ohm, 243cc , low impedance injectors. This is a good thing because I have some that I can use off of another car I can use if all else fails. I also did some looking into the swap, it seems my best choice is to go with a bellhousing from a C5 vette, which also works out because a friend happens to have one laying around he is going to give me.

lovemyp-car

yup, c5 bellhousing with an adapter is the best route, you can bolt that BH onto any small block chevy motor, from old school to LS

MichaelK

http://cgi.ebay.com/ebaymotors/Fuel-...#ht_5093wt_827

That auction has a list of cross references for the injectors on the 944. Not sure how accurate it is but they have a good rating so if they were off they would likely fix it.

pepegurr

Well, I got it fired up last night. Now a new problem, First, it runs rough, almost like it is skipping but it clears up if I can get it above 1500 RPM, it also seems to be flooding at times, leaning out badly at others. It was holding fuel pressure at first but now it wont hold pressure for more than 20-30 seconds so im gonna get rid of the factory setup and run my own pressure regulator to see if that fixes the fueling issues. Next, I have a warning light on, on the dash. How do I find out what is triggering this light?

J Berk

What light? is it the "!" ?

Have you tried the Clark's Garage site as a reference?

http://www.clarks-garage.com/

pepegurr

yea , it is the "!" light. I know there is supposed to be another light on with this one but none of the other lights are on.

J Berk

Is the parking brake set?

odurandina

i killed my "!" light... simply removed the instruments and defeated that light after it came on during hard cornering and down half a quart of oil just prior to a scheduled oil change... now, i run mobil 1, keep the oil topped off and rely on the guages as any good driver would do.... but, unlike your car, mine has never run rough or broken down.

in what area of the country are we talking about ?

maybe there's a good rennlister/tech in your area who can offer a leg up on the fuel issues causing the "choppy" idle.


and keep some of the thoughts from the following thread in mind....

https://rennlist.com/forums/924-931-...-yo-944-a.html



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944Ross

Before you go making sweeping changes to the factory system, give the fuel system some time to clean up. With fresh gas in it, put some Techron, Gumout, or similar fuel injector cleaner in the tank. Try pulsing the injectors one by one directly off the battery, with no fuel pressure. Give each one quick little bursts of power until they click audibly. Hot-wire the fuel pump and let it run for 5 minutes, then put vacuum to the FPR with a hand pump, make it stroke a couple of times. I've brought two 944's back to life after very long "resting periods" with this procedure. Even so it took some run time to clean up completely.