1984 c4 issues. Pls help.
Thread Starter
2nd Gear
Joined: Apr 2014
Posts: 2
Likes: 0
From: Qala, Gozo, Malta
1984 c4 issues. Pls help.
Hi I have a 1984 corvette c4 4+3 manual transmission. Sometimes when the engine is hot and I try to start it it does not even crank. It seems like a sensor is cutting out the signal to the starter. What do you think might be the problem? Also sometimes it has bad idling (stays at high revs without stepping on gas). Today while engine braking on second gear the shifter started slipping out and going into neutral by itself. I appreciate a lot if you can help me.
Racer
Joined: Sep 2010
Posts: 325
Likes: 8
From: Princeton Jct. New Jersey
Hi I have a 1984 corvette c4 4+3 manual transmission. Sometimes when the engine is hot and I try to start it it does not even crank. It seems like a sensor is cutting out the signal to the starter. What do you think might be the problem? Also sometimes it has bad idling (stays at high revs without stepping on gas). Today while engine braking on second gear the shifter started slipping out and going into neutral by itself. I appreciate a lot if you can help me.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Hi I have a 1984 corvette c4 4+3 manual transmission. Sometimes when the engine is hot and I try to start it it does not even crank. It seems like a sensor is cutting out the signal to the starter. What do you think might be the problem? Also sometimes it has bad idling (stays at high revs without stepping on gas). Today while engine braking on second gear the shifter started slipping out and going into neutral by itself. I appreciate a lot if you can help me.
The trans popping out of gear on deceleration can be caused by a bad synchro. This gets progressively worse over time and if this is your problem the next symptom will be a slight grind as it goes into gear. Then it becomes a BIG grind as it goes into gear and then it becomes impossible to get it into that gear.
Last edited by Cliff Harris; Apr 23, 2014 at 02:43 AM. Reason: Fixed spelling error.
Thread Starter
2nd Gear
Joined: Apr 2014
Posts: 2
Likes: 0
From: Qala, Gozo, Malta
To add to what freed1 said, the alarm is also involved. It disables the starter. I have heard that you have to make sure the door lock is vertical when you unlock the door or the alarm might be turned off completely.
The trans popping out of gear on deceleration can be caused by a bad synchro. This gets progressively worse over time and if this is your problem the next symptom will be a slight grind as it goes into gear. Then it becomes a BIG grind as it goes into gear and then it becomes impossible to get it into that gear.
The trans popping out of gear on deceleration can be caused by a bad synchro. This gets progressively worse over time and if this is your problem the next symptom will be a slight grind as it goes into gear. Then it becomes a BIG grind as it goes into gear and then it becomes impossible to get it into that gear.
Thanks for the help.
3rd Gear
Joined: Apr 2014
Posts: 3
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4+3 slipping out of gear ez fix
My 86 4+3 started slipping out of gear and making noise with the clutch released in neutral. The fluid level was low. Somewhat challenging to fill but a short piece of rubber hose on the tip of a normal quart bottle does the trick. Grinding going into first can happen if you try to go in at too high a speed and can scatter the cluth disk. If it's too fast to drive in that gear then don't put it in prematurely. Also on mine I had grinding issues due to bad fluid in the slave cylinder. Water contamination over time. Soak out the old with a rag or use a turkey baster to suck out the old fluid. Fill with new brake fluid and bleed the old fluid out of the system. Immediate fix for mine. I used 75w90 full synthetic Mobil 1 gear oil in the gearbox and wildwood high temp brake fluid in the slave cylinder. Also clean out any crud in the reservoir if there is any. The system is almost 30 years old so there probably is
Safety Car
Joined: Aug 2002
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From: SANTA CRUZ CA
http://www.ask.com/question/signs-of...gnition-module
