L98 only starts w/ starting fluid, but runs fine, and starts fine after running...
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Car: 1981 Chevy Malibu, 1987 Formula 350
Engine: 229 V6, L98 TPI 350
Transmission: TH350, 700R4
Axle/Gears: 10 bolt ???, 9 bolt 3.27 posi
L98 only starts w/ starting fluid, but runs fine, and starts fine after running...
what would cause an L98 to not start on its own until its run for a minute or two?
Basicly the car only starts if I squirt starting fluid into the TB, it runs fine, idles fine on its own, and if I let it run for a minute then shut it off, i can start it up on its own up to like 45 minutes later no problem. After that it needs starting fluid again. Any suggestions? engine is stock except for hedman long tubes and a DIY cold air intake
-Chris
Basicly the car only starts if I squirt starting fluid into the TB, it runs fine, idles fine on its own, and if I let it run for a minute then shut it off, i can start it up on its own up to like 45 minutes later no problem. After that it needs starting fluid again. Any suggestions? engine is stock except for hedman long tubes and a DIY cold air intake
-Chris
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
I'm gonna take a flying leap here :-)
Check the cold start switch and injector.
Start from there
later
Jeremy
Check the cold start switch and injector.
Start from there
later
Jeremy
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Car: 91 R/S , 89 dodge p/u
Engine: L31 GM crate re-cammed , 318
Transmission: T-5 , 4 speed auto
Axle/Gears: 3.42 , ?
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
fuel filter ??? when was it last changed ? if you dont know , change it . they are cheap , easy to change . hope this helps .
uncle tom
uncle tom
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Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
I had the same prob on a 89 305 the prob was the fuel pump it didn't have enough pressure to give the enitial startup but it would run fine and start fine until the engine cooled off. I have no expirience with the cold start injector setup since 88 was the last year for that, but it could definatly be your prob.
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Car: 89 formula 350
Engine: ls1 magnuson tvs2300 supercharger
Transmission: T56
Axle/Gears: 4.11 Dana 44!
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
coolant temp sensor?
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Car: 1981 Chevy Malibu, 1987 Formula 350
Engine: 229 V6, L98 TPI 350
Transmission: TH350, 700R4
Axle/Gears: 10 bolt ???, 9 bolt 3.27 posi
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
I'm curious to know why this would cause this problem..... When I first got the engine running again (With the major vacuum leaks), the headers burnt the wire from the temp sensor in the pass. side cyl. head, but I figured that it would just render the temperature gauge useless/inaccurate
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Car: 89 formula 350
Engine: ls1 magnuson tvs2300 supercharger
Transmission: T56
Axle/Gears: 4.11 Dana 44!
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
coolant temp sensor in the front of the intake. if its bad and tells the ecm its really cold out, it would make the car run so rich at startup, that the car may not start. Common tpi problem
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#8
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Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
Sounds like a TPI transplant. Make sure your ECM and injectors have ignition power with the key in crank. Sometimes this is overlooked and there is ignitition power in key ON only. With no ignition power in crank, the ECM never pulses the injectors and the injectors have no chance of firing.
Good luck
Good luck
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Car: CTS-V & 89 Z28 vortech charged
Engine: LS6 & 383 charged stroker
Transmission: 6-speed & 5 speed
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
Are you getting any injector pulse during cranking?
You might also look for 12v at inj harness during key on and cranking. If present during both situations look for voltage drop. When inj get hot they tend to need more power to overcome the increase in resistance.
You might also look for 12v at inj harness during key on and cranking. If present during both situations look for voltage drop. When inj get hot they tend to need more power to overcome the increase in resistance.
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Car: red one
Engine: on the floor
Transmission: next to engine
Axle/Gears: the ones that turn
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
I had the same prob on a 89 305 the prob was the fuel pump it didn't have enough pressure to give the enitial startup but it would run fine and start fine until the engine cooled off. I have no expirience with the cold start injector setup since 88 was the last year for that, but it could definatly be your prob.
good luck
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Car: 1989 IROC--1989 T/A
Engine: 5.7 TPI in both
Transmission: W/C T-5 in both
Axle/Gears: B/W 3.27 in both
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
HMMMM.Well, My stab at this would be the fuel pump relay/oil pressure sensor. The reasoning is that you state the car will start and run,but only after "fuel" is introduced. Is not he fuel provided by a pressure signal from the oil sensor. The 10 second cranking alone would build enough oil pressure to close the ground to the fuel pmp relay. Once it is running, or has run ir will start shortly after but not after a long delay. Anyone see fault in this thought?
THE SHAGGYIROC
THE SHAGGYIROC
#13
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Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
HMMMM.Well, My stab at this would be the fuel pump relay/oil pressure sensor. The reasoning is that you state the car will start and run,but only after "fuel" is introduced. Is not he fuel provided by a pressure signal from the oil sensor. The 10 second cranking alone would build enough oil pressure to close the ground to the fuel pmp relay. Once it is running, or has run ir will start shortly after but not after a long delay. Anyone see fault in this thought?
THE SHAGGYIROC
THE SHAGGYIROC
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Car: Faster
Engine: Than
Transmission: You!
Re: L98 only starts w/ starting fluid, but runs fine, and starts fine after running..
What do your plugs look like? Also, if you have the means, ditch the cold start injector, cap the rail and runner port for it, and then run the 1989 F-body or vette code. I've fixed a couple of vettes and f-body's that had the same issue by doing the above.
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