91 Legacy SS Turbo hesitating, misfiring and overheating
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91 Legacy SS Turbo hesitating, misfiring and overheating
My 91 Legacy SS Turbo Is Having Some Problems. First, It Is Hesitating When I Accelerate, it Won't Accelerate Above 2,000 Rpms Without Jerking, Rumbling And Misfiring. Even When I Get Upwards Of 60 Mph It Will Still Rumble And Not Accelerate. It Also Has Been Having An Overheating Problen (Which Occured A Few Week After It Started Hesitating. The Temp Gage Will Go Up And It Seems To Be Leaking Water/Coolant. Anyone Who Has An Idea Of The SourcEs these problems Would Be Appreciated.
Re: 91 Legacy SS Turbo hesitating, misfiring and overheating
Welcome to the LC BBS.
#1: How many miles on the car?
#2: Any recent (last 6 months) work done under the hood? When was the last full tune-up? (Always use NGK/Subaru OEM plugs and wires.)
#3: Is the Check Engine Light (CEL) on? Even if it's not please check for codes stored in the computer - HERE's HOW.
#4: Where is the leaking coolant coming from? Have you replaced any of the cooling system parts - thermostat (always use a Subaru OEM T-stat) or radiator - and properly 'burped' the system?
The hesitation/jerking sounds like a vacuum leak, which is common on these old cars. The overheating could be a sign of head gasket failure, but check out the other cooling system issues 1st.
GL,
TD
#1: How many miles on the car?
#2: Any recent (last 6 months) work done under the hood? When was the last full tune-up? (Always use NGK/Subaru OEM plugs and wires.)
#3: Is the Check Engine Light (CEL) on? Even if it's not please check for codes stored in the computer - HERE's HOW.
#4: Where is the leaking coolant coming from? Have you replaced any of the cooling system parts - thermostat (always use a Subaru OEM T-stat) or radiator - and properly 'burped' the system?
The hesitation/jerking sounds like a vacuum leak, which is common on these old cars. The overheating could be a sign of head gasket failure, but check out the other cooling system issues 1st.
GL,
TD
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
Re: 91 Legacy SS Turbo hesitating, misfiring and overheating
It sounds like you may have multiple problems. I'd start with the basic checks & tune-up stuff that Todd mentioned above and go from there.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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- First Gear
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- Location: Salt Lake City, UT
Re: 91 Legacy SS Turbo hesitating, misfiring and overheating
My 93 SS was hesitating and overheating. Turns out the head gaskets blew, I had multiple vacuum/boost leaks, the injectors were bad, the fuel pump was dying, crappy plugs and wires, and the MAF was dirty/dyng. After simply replacing everything it now runs like a beast. I'd start by checking for vacuum leaks and cleaning the MAF.
Overheating can be caused by air bubbles in the coolant system, bad HGs, and a faulty thermostat. Only use an OEM Subaru thermostat.
Overheating can be caused by air bubbles in the coolant system, bad HGs, and a faulty thermostat. Only use an OEM Subaru thermostat.
93 SS - SOLD
03 WRX 22T/205 20GXT 350 whp
06 OBXT
95 BK - Sold to my neighbor.
03 WRX 22T/205 20GXT 350 whp
06 OBXT
95 BK - Sold to my neighbor.