1991 GEO Prizm Engine cooling Problems
- Complaints
- 10about this part
- Share
- 22%of 46 total for the year
- Median mileage
- 190,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the engine cooling of the 1991 GEO Prizm, 22% of the 46 complaints for this model year. Where a mileage was given, the median is 190,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 1991 Geo Prizm. The contact stated that while driving at various speeds, carbon monoxide was present because the manifold had been fractured. The vehicle was repaired twice but the failure continued. The failure mileage was approximately 190,000.”
NHTSA complaint #10366545, filed 2010-11, 190,000 miles“Jan/01 - discovered cracked exhaust manifold. Was told by salvage yard that this is a common problem with geos and they can't keep manifolds in stock because of the frequency. New manifold installed to replace cracked one. The new one cracked approx. 1-2 months later.”
NHTSA complaint #745826, filed 2001-05“Front suspension out of alignment on eight occasions, due to problems with misalignment the right and left front tires experience excessive wear, replace front tires on six different occasions. Yh”
NHTSA complaint #782010, filed 1999-03“Upon driving the vehicle there is a very loud sound coming from the rear of the vehicle due to the exhaust manifold which has a crack, consumer has replaced the manifold. Plase provide further details.”
NHTSA complaint #813775, filed 1997-07Related service bulletins
- 10246631Sep 1, 2013Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2001 | 1 | 17% |
| 2000 | 2 | 29% |
| 1999 | 2 | 8% |
| 1997 | 1 | 2% |
| 1996 | 2 | 3% |
| 1995 | 5 | 5% |
| 1994 | 7 | 5% |
| 1993 | 8 | 10% |
| 1992 | 15 | 30% |
| 1991 | 10 | 22% |
| 1990 | 6 | 16% |
Other parts of the 1991 GEO Prizm
13 complaintsSeat belts
6 complaintsElectrical system
5 complaintsLatches, locks and linkages
4 complaintsExterior lighting
3 complaintsFuel system
3 complaintsTires
3 complaintsEquipment
2 complaintsTransmission and drivetrain
2 complaintsSteering
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 1991 GEO Prizm
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology