1988 Bogs on Throttle Application
Thread Starter
Instructor
Joined: Nov 2022
Posts: 133
Likes: 6
From: Dallas, TX
1988 Bogs on Throttle Application
**[EDIT]** If I ease onto the throttle it will rev, it's just trying to conventionally rev it up that bogs it out.
Hey y'all! My 1988 base coupe now runs and drives! But any application of throttle causes it to bog out, not shut off, but bog and not rev at all. Sometimes I'll get lucky and it'll let me rev it a bit, but more often than not it just bogs. Timing is dialed to 8 0r 10 BTDC (can't for the life of me remember what I actually set it at), fuel pressure is stable in the 40s at idle but I need to check while driving, new pump/sending unit, new IAC/TPS, and new Bosch IIIs. Could low fuel in the tank be a cause of this no-rev nonsense? I know the baffling in these cars is not the best and I wonder if the low fuel level I've kept the car at could be the culprit. Any help would be greatly appreciated, thank you!!
Hey y'all! My 1988 base coupe now runs and drives! But any application of throttle causes it to bog out, not shut off, but bog and not rev at all. Sometimes I'll get lucky and it'll let me rev it a bit, but more often than not it just bogs. Timing is dialed to 8 0r 10 BTDC (can't for the life of me remember what I actually set it at), fuel pressure is stable in the 40s at idle but I need to check while driving, new pump/sending unit, new IAC/TPS, and new Bosch IIIs. Could low fuel in the tank be a cause of this no-rev nonsense? I know the baffling in these cars is not the best and I wonder if the low fuel level I've kept the car at could be the culprit. Any help would be greatly appreciated, thank you!!
Last edited by 1988C4Owner; Nov 12, 2024 at 02:42 PM.
Melting Slicks
Joined: Jul 2005
Posts: 2,200
Likes: 302
What p/n injectors did you get and who did you get them from? Was it doing this before the injector swap?
I don't think the low fuel level thing is what's causing the problem. A throttle bog occurs too fast for a fuel starvation incident at the fuel tank to impact the pressure in the rails.
Though everytime I hear "Bosch-III", my spider sense starts tingling... lots of ways to get burned by those.
I don't think the low fuel level thing is what's causing the problem. A throttle bog occurs too fast for a fuel starvation incident at the fuel tank to impact the pressure in the rails.
Though everytime I hear "Bosch-III", my spider sense starts tingling... lots of ways to get burned by those.
Last edited by ULTM8Z; Nov 12, 2024 at 01:47 PM.
Drifting
Joined: Jul 2022
Posts: 1,805
Likes: 365
From: Central Florida
Can you get it to idle and share a Win ALDL screen with us with the "Sensor tab" selected. Any codes now ?? You probably have timing set to 6°. And those darn dial lights, I glued-taped mine to zero so it would not change..
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Last edited by Vets-Vet; Nov 12, 2024 at 01:49 PM.
Thread Starter
Instructor
Joined: Nov 2022
Posts: 133
Likes: 6
From: Dallas, TX
What p/n injectors did you get and who did you get them from? Was it doing this before the injector swap?
I don't think the low fuel level thing is what's causing the problem. A throttle bog occurs too fast for a fuel starvation incident at the fuel tank to impact the pressure in the rails.
Though everytime I hear "Bosch-III", my spider sense starts tingling... lots of ways to get burned by those.
I don't think the low fuel level thing is what's causing the problem. A throttle bog occurs too fast for a fuel starvation incident at the fuel tank to impact the pressure in the rails.
Though everytime I hear "Bosch-III", my spider sense starts tingling... lots of ways to get burned by those.
Thread Starter
Instructor
Joined: Nov 2022
Posts: 133
Likes: 6
From: Dallas, TX
She idles fine, I'll try to remember to get a screenshot of TunerPro once I get back from college. No engine codes.
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Melting Slicks
Joined: Aug 2003
Posts: 3,389
Likes: 391
From: Lakeville MI
Both MAF and injector pw should directly follow the tps like this: https://datazap.me/u/tequilaboy/ailv...&mark=57-27-42
Thread Starter
Instructor
Joined: Nov 2022
Posts: 133
Likes: 6
From: Dallas, TX