1991 Chevrolet S10 engine and engine cooling problems
18 owner complaints filed with NHTSA name the engine and engine cooling on the 1991 Chevrolet S10 — 10% of all complaints for this model year.
What owners report
“Vehicles manifold burned through on engine block side causing exhaust gases to blow against engine burning up the o2 sensors. *jg”
filed Mar 7, 2002
“Exhuast manifold has a hole in it and blows exhaust fumes inside passenger's compartment. Owner had exhaust manifold replaced. However, problem still reoccursred. Please provide more information.*ak”
filed Jan 7, 2002
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
COLD ENGINE KNOCK. *TW
376105 · Service Bulletin/Repair Instructions · issued Feb 1, 1995
Engine and Engine Cooling problems in other S10 years
| Year | Reports | Share |
|---|---|---|
| 2004 S10 | 1 | 5% |
| 2003 S10 | 11 | 6% |
| 2002 S10 | 2 | 1% |
| 2001 S10 | 25 | 8% |
| 2000 S10 | 30 | 6% |
| 1999 S10 | 22 | 10% |
| 1998 S10 | 51 | 8% |
| 1997 S10 | 40 | 9% |
| 1996 S10 | 70 | 11% |
| 1995 S10 | 84 | 9% |
| 1994 S10 | 66 | 7% |
| 1993 S10 | 16 | 7% |
Other reported problem areas on the 1991 Chevrolet S10
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.