ok heres the deal. I go to start my car in morning and it just turns and turns over. After about turning it over for about 20 times it will start. My fuel pump primes and all that good stuff. I do have spark and everything. Once its running it runs pretty good. This is the thing though if I dont feel like letting it turn over and over I can spray starter fluid stuff in throttle body and it cranks right up.

 

What kind of engine do you have?

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89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else

 

ok

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No License, No Hope.

FILTERCHARGED BABY

 

350 TPI freshly rebuild. It has done this ever since I have owned this car so.

 

since it starts when you put that fluid int there i could be too lean at start up, the cold start up injector might be cloged if you have one

 

replace the coolent temp sensor if u haven't already, im pretty sure thats the problem.

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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series

http://www.geocities.com/david_angel_16

[This message has been edited by breathment (edited October 21, 2001).]

 

is that the sensor thats in front of the manifold? Cause if it is then I changed that. When I was changing it like a week ago I got water all over the connector< i dunno if that matter or not, but just thought I would let u know.

 

yea thats it, should not matter as long as it still dont have water sealed in the connector, and yea i need some sleep and i dont know why i am still awake :P

 

89+ don't have a cold start injector, and im guess thats what he has, because of his user name, but if its 88, 87 then u will have one. does anyone know if there is a relay or anythign for main injector enrichment for 89+ TPI's?

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- David
88' GTA 5.7L TPI MODS---&gt; air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series

http://www.geocities.com/david_angel_16

 

yeah I have the 89. There is no cold start injector. I know I have replaced maf, maf relay, and burn off relay. Still dont know why its hard to start.

 

heyr Vadar I know your real experienced at this kind of stuff. Any ideas?

 

btt

 

did u replace the Air Idle Control Vavle?

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- David
88' GTA 5.7L TPI MODS---&gt; air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series

http://www.geocities.com/david_angel_16

 

What is your fuel pressure set at? Also...check for vacuum leaks. Do you have a stock, or custom eprom?

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Mike Metzler (Desert86Roc)[*] Check Out:SpeedWorldMotorplex.com[*] Check Out:Chevrolet F-Body Online Part & Illustration Manual[*] My 86 IROC 305 TPI Page (406 build in progress)

ET's @ 1250 ft[*] 14.28 @ 95.461 mph (uncorrected, NOS, no headers)[*] 15.362 @ 88.238 mph (uncorrected, headers, no NOS)
&lt;&gt;&lt;

 

no I havent raplaced my IAC yet but it idles ok I guess. Im not sure about fuel pressure dont have a guage yet. Dont really have the money for one yet. For chip I think its the stock one, almost positive. I dunno who makes chips for tpis or anything or dont have the extra couple hundred for one so.

 

I'm having the same problem. But its a 87 2.8 mpfi ho. Is that temp sensor the one that controls the gauge? Cause my temp gauge don't work but if I have the dash apart I can move the needle down and start the car and it pegs and sticks but if i knock it back down while still running it sits at like well 150-160 I suppose, then I shut off and restart and same thing it pegs and sticks. Is there supposed to be a needle stoping it? My car is pulling the usual code 34 which leads to the maf but I do the tap while running and it wont stutter.

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1987 Chevrolet Camaro
2.8 Ltr HO Cut air boxes K&N Filters Gutted Cat (Did I say gutted opps don't tell the officer)
Duel catback Exhaust With Flowmaster series 80 dual 5"X24" MONSTER Echos
97 Firebird 16X8" Rims

 

for youyr temp guage the sensor is on the drivers side head. There is also a sensor that goes into the manifold for the temp of the water, but thats for the computer not the guage, If it pegs the wire for the sensor may be off of it and grounding on something else. Happen to me once.

 

btt

 

come on someone you gotta have some info for me

 

Just my guess...but you say it starts when you use starting fluid? Should indicate you're not getting fuel.

When the engine is cranking over, and she fires off, does it run smoothly? If so, I'd be wondering if the fuel pump is priming the rails when you turn the key on, because it seems to me that what's occurring is as you're cranking the engine over, the oil pressure switch is getting pressure, after 15-20 cranks there's sufficient pressure to close the switch and send the voltage to the pump.

If this is the case, the possible causes could be the FP relay, the wiring, or the ECM.

Best way to start diagnosing would be to use a FP gauge and a DMM.

 

yeah I am gonna invest in a fp guage soon so i can test it. Once its running it runs smoothly so I dunno. Could it be the relay even if it runs smoothly when it gets started. Its like after it sits for more than 6 or 7 hours it takes forever to start. I know the fuel pump primes, but maybe its not getting to the rail.