1991 Geo Storm engine and engine cooling problems
20 owner complaints filed with NHTSA name the engine and engine cooling on the 1991 Geo Storm — 22% of all complaints for this model year.
What owners report
“7 months and 5 replacement ecus on my 1991 geo storm gsi, and still has dangerous issues of stalling on highway and when pulling out into traffic. The problem is that between 1985 and 1995, ac delco used a insulative spray on the circuit boards in these ecus/computers which shrinks over time when…”
filed Jun 28, 2008
“The vehicle stalled without warning. The dealer replaced the distributor cap, spark plug wires and rotor, however the problem recurred. *jb”
filed Apr 17, 2003
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
130089009 · Service Bulletin/Repair Instructions · issued Sep 1, 2013
Engine and Engine Cooling problems in other Storm years
| Year | Reports | Share |
|---|---|---|
| 1993 Storm | 14 | 25% |
| 1992 Storm | 16 | 21% |
| 1990 Storm | 7 | 16% |
Other reported problem areas on the 1991 Geo Storm
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.